U.S. patent application number 13/839666 was filed with the patent office on 2016-02-04 for devices and systems for improved traffic control signal assembly.
The applicant listed for this patent is Central Path Signal Technologies, Inc.. Invention is credited to Robert E. Townsend, JR..
Application Number | 20160033116 13/839666 |
Document ID | / |
Family ID | 49210868 |
Filed Date | 2016-02-04 |
United States Patent
Application |
20160033116 |
Kind Code |
A9 |
Townsend, JR.; Robert E. |
February 4, 2016 |
DEVICES AND SYSTEMS FOR IMPROVED TRAFFIC CONTROL SIGNAL
ASSEMBLY
Abstract
Methods and apparatuses are provided for improved traffic
control devices including a continuous central hanger support
system that is integral to the traffic control device and provides
a central load path. In an embodiment of the invention, the
terminal housing and traffic signal housing of the traffic control
device can be included in a single unit housing. A single unit
housing can also include an integral backplate. Embodiments with an
integral backplate can provide a solar energy generation system
that utilizes a traffic signal's exterior surface as a substratum
to secure thin-film photo cell laminates (TFPVL). The continuous
central hanger integrated with the single unit housing can provide
the traffic control device with improved securement of electrical
components and structural stability for survivability during high
wind events as compared to conventional traffic signal devices.
Inventors: |
Townsend, JR.; Robert E.;
(Lake Wales, FL) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Central Path Signal Technologies, Inc. |
West Palm Beach |
FL |
US |
|
|
Prior
Publication: |
|
Document Identifier |
Publication Date |
|
US 20130248673 A1 |
September 26, 2013 |
|
|
Family ID: |
49210868 |
Appl. No.: |
13/839666 |
Filed: |
March 15, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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13554475 |
Jul 20, 2012 |
8540392 |
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13839666 |
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61627739 |
Oct 16, 2011 |
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61628103 |
Oct 23, 2011 |
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61628439 |
Oct 30, 2011 |
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61628440 |
Oct 30, 2011 |
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61628827 |
Nov 7, 2011 |
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61629744 |
Nov 26, 2011 |
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61631555 |
Jan 6, 2012 |
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61632177 |
Jan 19, 2012 |
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61685862 |
Mar 26, 2012 |
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61689082 |
May 29, 2012 |
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61690861 |
Jul 6, 2012 |
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Current U.S.
Class: |
248/327 ;
248/317 |
Current CPC
Class: |
F21V 21/008 20130101;
F16M 13/02 20130101; G08G 1/095 20130101 |
International
Class: |
F21V 21/008 20060101
F21V021/008; G08G 1/095 20060101 G08G001/095; F16M 13/02 20060101
F16M013/02 |
Claims
1. A traffic signal support apparatus for a traffic control device,
wherein the traffic control device has a housing containing
electrical connections and has at least one traffic signal face
electrically connected thereto, the traffic signal face comprising
a traffic signal housing, and wherein the traffic control device is
held from a span wire, said traffic signal support apparatus
comprising: a continuous load path hanger; mounting structure
connection hardware that connects said continuous load path hanger
to a span wire; and signal connection hardware that fixedly
connects said continuous load path hanger to a traffic signal
housing; wherein said continuous load path hanger is not the span
wire or the housing containing electrical connections; wherein said
continuous load path hanger in operation receives the load of at
least most of the gravitational and wind-induced stresses of the
traffic signal housing and transmits those stresses past the
housing containing the electrical connections and to the span wire;
and wherein the mounting structure connection hardware comprises a
spring-type linking device, said linking device in operation being
connected to said continuous load path hanger at a point above the
roof of the traffic signal housing.
2. A traffic signal support apparatus according to claim 1, wherein
the linking device comprises an extension spring of barrel type,
variable pitch type, constant pitch type, or hourglass type.
3. A traffic signal support apparatus according to claim 1, wherein
the continuous load path hanger is a central continuous load path
hanger.
4. A traffic signal support apparatus according to claim 3, wherein
the central continuous load path hanger is external to the terminal
housing or the signal housing, or is external to the terminal
housing and the signal housing.
5. A traffic signal support apparatus according to claim 3, wherein
the central continuous load path hanger is internal to the terminal
housing or the signal housing, or is internal to the terminal
housing and the signal housing.
6. A traffic signal support apparatus for a traffic control device,
wherein the traffic control device has a housing containing
electrical connections and has at least one traffic signal face
electrically connected thereto, the traffic signal face comprising
a traffic signal housing, and wherein the traffic control device is
held from a span wire, said traffic signal support apparatus
comprising: a continuous load path hanger; mounting structure
connection hardware that connects said continuous load path hanger
to a span wire; and signal connection hardware that fixedly
connects said continuous load path hanger to a traffic signal
housing; wherein said continuous load path hanger is not the span
wire or the housing containing electrical connections; wherein said
continuous load path hanger in operation receives the load of at
least most of the gravitational and wind-induced stresses of the
traffic signal housing and transmits those stresses past the
housing containing the electrical connections and to the span wire;
and wherein the continuous load path hanger, in operation, is
external to the terminal housing or the signal housing, or is
external to the terminal housing and the signal housing.
7. A traffic signal support apparatus according to claim 6, wherein
the central continuous load path hanger is a central continuous
load path hanger.
8. A traffic signal support apparatus according to claim 6, wherein
the central continuous load path hanger comprises a rear hanger
support frame, said rear hanger support frame comprising an upper
attachment flange connected to one end of a depending vertical
support flange, and the other end of the depending vertical support
flange is connected to a support shoe.
9. A traffic signal support apparatus according to claim 8, wherein
the rear hanger support frame is adjustable in a vertical direction
by extension or retraction of the depending vertical support
flange.
10. A traffic signal support apparatus according to claim 9,
wherein the depending vertical support flange comprises two parts:
an upper vertical flange portion and a lower vertical flange
portion movable relative to each other when unsecured and when
secured to each other are held in place relative to each other by
at least one fastener extending through an aperture in each of the
upper and lower vertical flange portions.
11. A traffic signal support apparatus according to claim 10,
wherein each of the upper vertical flange portion and lower
vertical flange portion comprises a series of complementarily
configured serrations that mutually engage when the upper and lower
vertical flange portions are secured to each other and that
disengage when the upper and lower vertical flange portions are
unsecured, thereby allowing adjustment of the rear hanger support
frame in a vertical direction.
12. A traffic signal support apparatus according to claim 8,
wherein said rear hanger support frame comprises one or both of a
support flange proximal to the upper attachment flange that
reinforces the connection of the upper attachment flange to the
vertical support flange and a support flange proximal to the
support shoe that reinforces the connection of the support shoe to
the vertical support flange.
13. A traffic signal support apparatus according to claim 6,
wherein the central continuous load path hanger is a peripheral
continuous load path hanger.
14. A traffic signal support apparatus according to claim 13,
wherein the peripheral continuous load path hanger comprises: a
plurality of external hanger vertical support members including
first and second external hanger vertical support members, each
having an upper end and a lower end; a lower support plate
comprising first and second receivement apertures for receiving the
lower ends of first and second external vertical support members,
respectively; and at least one upper support flange or upper
support plate; such that, in operation, the first external vertical
support member extends vertically along a lateral side of a traffic
signal housing and the second external vertical support member
extends vertically along a different lateral side of the traffic
signal housing; the lower ends of the first and second external
vertical support members extending through first and second
receivement apertures, respectively, in the lower support plate and
being fastened in position thereto, the lower support plate being
connected to the traffic signal housing and disposed below the
floor of the traffic signal housing; the upper ends of the first
and second external vertical support members each being fastened in
position through an aperture in an upper support flange or upper
support plate, the upper support flange or upper support plate
being connected to the traffic signal housing above the roof of the
traffic signal housing; whereby the traffic signal housing is
fixedly secured between the lower support plate and the upper
support flange or the upper support plate in a vertical direction
and is fixedly secured between the first and second external
vertical support members in a lateral direction.
15. A traffic signal support apparatus according to claim 14,
comprising an upper support plate, the upper support plate
comprising serrations or teeth that are complementarily configured
to mutually engage serrations or teeth on the roof of a disconnect
box or signal housing when the upper support plate is tightened
against the roof of the disconnect box or signal housing, thereby
inhibiting rotation of the disconnect box or signal housing about a
vertical axis.
16. A traffic signal support apparatus according to claim 14,
wherein the upper support flange or upper support plate is above
the roof of a disconnect box and is connected to the traffic signal
housing through a connection to the disconnect box.
17. A traffic signal support apparatus according to claim 14,
comprising an upper support flange.
18. A traffic signal support apparatus according to claim 17,
wherein the upper support flange is an integral portion of a span
wire connection load spreading clamp, the span wire connection load
spreading clamp extending predominantly in a lateral dimension and
having first and second lateral ends, and comprising a span wire
receivement recess extending along the lateral dimension of the
load spreading clamp; such that, in operation, the upper ends of
the first and second external vertical support members are each
fastened in position at first and second lateral ends,
respectively, of the load spreading clamp to an upper support
flange of the load spreading clamp.
19. A traffic signal support apparatus according to claim 18,
wherein the load spreading clamp comprises a single upper support
flange extending laterally along the clamp.
20. A traffic signal support apparatus according to claim 18,
wherein the load spreading clamp comprises first and second upper
support flanges disposed proximal to the first and second lateral
ends of the clamp, respectively.
21. A traffic signal support apparatus according to claim 13,
further comprising a backplate adapted for mounting on said traffic
signal support apparatus, the backplate comprising first and second
vertical support attachment channels configured to complementarily
receive first and second external hanger vertical support members,
respectively, whereby the backplate is mounted on said traffic
signal support apparatus.
22. A traffic signal support apparatus according to claim 21,
wherein the backplate further comprises first and second offset
attachment ribs, said first and second vertical support attachment
channels being connected to said first and second offset attachment
ribs, respectively.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit under 35 U.S.C.
.sctn.119 of U.S. Patent Application Nos. 61/627,739, filed Oct.
16, 2011; 61/628,103, filed Oct. 23, 2011; 61/628,439, filed Oct.
30, 2011; 61/628,440, filed Oct. 30, 2011; 61/628,827, filed Nov.
7, 2011; 61/629,744, filed Nov. 26, 2011; 61/631,555, filed Jan. 6,
2012; 61/632,177, filed Jan. 19, 2012, 61/685,862, filed Mar. 26,
2012, 61/689,082, filed May 29, 2012, 61/690,861, filed Jul. 6,
2012, and 13/554,475 filed Jul. 20, 2012, all of which are hereby
incorporated by reference in their entirety.
BACKGROUND
[0002] During the early development of the traffic signal housing,
the major focus was the operational aspect, primarily a securement
of lighting displays and a housing for electrical connections. The
basic manufacturing and construction, materials, and specifically
the structural and mechanical functions of traffic signals, have
not been significantly changed or improved upon in approximately 65
years.
[0003] There are three basic structures that are commonly used to
hold a traffic control signal located over or adjacent to a roadway
travel lane and those structures include poles, steel mast arms,
and load bearing cables strung between poles; the last being
commonly referred to as span wire support systems. The three basic
elements of a traffic control signal are one or more indicators
(usually bulbs or LED modules); housings to secure the indicators
(housings and indicators together are "signal heads" or a "signal
face"); and the hardware used to hang the traffic control signals
such as hangers, disconnect boxes, and cable attachment
hardware.
[0004] Traffic signal hangers and housings have a known history of
structural failures during hurricanes which sometimes result in
injury and even fatalities due to uncontrolled roadway
intersections. Traffic control signals, when designed as individual
components, are very susceptible to damage from hurricane force
winds, and multiple points of failure can occur in more than one
specific component.
[0005] Prior art devices suffer from flawed design in which the
housing of the electronics, known as the "disconnect box" and/or
"disconnect hanger," itself is used to support traffic signals by
multiple linear load paths around the periphery of the disconnect
box, rendering it susceptible to structural failures, especially at
the disconnect box's cantilevered shelf areas during high wind
events. In some instances, this disconnect box load path results in
as much as 10-11 inches or more of horizontal load displacements
through and around the periphery of the disconnect box, wherein the
vertical loading of the traffic signal is transferred horizontally
across the top of the disconnect box, then turns downward at each
side of the disconnect box, then back along the bottom floor to an
interrupted horizontal plane. An invention that eliminates many of
the prior art deficiencies by changing the disconnect box's purpose
from including structural loading of traffic signals to merely just
the purpose of providing a weather proof housing for electrical
components would be a significant improvement.
BRIEF SUMMARY
[0006] The subject invention results from a novel approach to
avoiding structural failure of traffic control signals utilizing a
continuous load path hanger. The continuous load path hanger of the
subject invention provides an uninterrupted load path that is
distinctly separate from the housing of the electronics. In some
embodiments the continuous load path hanger has a direct central
load path. In other embodiments, the continuous load path hanger
has a circuitous continuous peripheral load path. Methods and
apparatuses are also provided for an improved traffic control
signal comprising a continuous load hanger support system that is
integral to the traffic control signal. In an embodiment of the
invention, the housing of the electronics and indicator housing of
the traffic control signal can be included in a single unit
housing, obviating the need for a traditional-type disconnect box.
In another embodiment of the invention, the single unit housing can
include a backplate.
[0007] The continuous load path hanger integrated with the single
unit housing can provide the traffic control signal with increased
structural stability (for survivability), storage capacity, and
securement of electrical components. Integrating the traffic signal
housing, disconnect box and backplate into a single unit housing
can enable use of a wider range of materials during fabrication and
more efficient means of manufacture. For example, the single unit
housing can be made of materials that include, but are not limited
to, aluminum, composite fiberglass, thermoplastics, and carbon
fiber.
[0008] The traffic control signal includes a support system to
allow storing and securing the electrical components of the traffic
control device. The traffic signal housing can provide a means for
securing the indicators (lighting displays or modules) and keeping
electrical connectors dry and easily accessible by removing
terminal hanger and signal heads from the structural load path of
the system.
[0009] In another embodiment of the invention, the traffic signal
housing and disconnect box can be provided as two separate housings
that are integrally connected to a continuous load path hanger
support system.
[0010] Methods are provided to assemble and install the traffic
control device. Although the subject invention is primarily
directed to improving span wire signalization, the traffic control
signal can be installed on a single span wire, two span wires, a
pole, or a mast arm. A span wire clamp can attach directly to a
single span wire, or in the event of a two span wire system,
directly to the upper and lower span wires. A novel tether clamp is
provided that sometimes can be used to attach directly to the
continuous load path hanger. The newly designed tether clamp
assembly provides an improved means of attaching the continuous
load path hanger to a lower span wire. A mast arm clamp can be
provided to attach the traffic control signal to a mast arm. The
mast arm can be positioned vertically, horizontally, or at any
angle in between.
[0011] The continuous load path hanger support system can be used
to hang the traffic control signal horizontally in both dual span
wire and single span wire applications. Two span wire clamps,
connection devices, and hanger extensions can be used to hang the
traffic control device by attaching the hanger extensions to the
continuous load path hanger extending out of the top and bottom
ends of the traffic control device.
[0012] In an embodiment, the traffic control signal, while being
hung vertically, can be integrally attached to a rectangular
continuous peripheral load path hanger that is connected to an
existing span wire in one location by one span wire claim or
sometimes in two locations by two span wire clamps.
[0013] The continuous load path hanger support system can also be
applied to other types of signal devices that are installed on span
wires, poles, and mast arms including, but not limited to, railroad
signals, pedestrian walking control signals, caution signals, toll
booth signals, highway alert displays, air traffic control signals,
tidal signals, and drawbridge signals.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 shows an interior frontal view of the traffic control
device with the housing and traffic signal doors removed according
to an embodiment of the invention.
[0015] FIG. 2 shows a sectional side view taken at cross sectional
plane 4 of FIG. 3.
[0016] FIG. 3 shows a top view of the traffic control device
according to the embodiment shown in FIG. 1.
[0017] FIG. 4 shows a sectional side view taken at cross sectional
plane 4 of FIG. 3.
[0018] FIG. 5 shows a sectional side view taken at cross sectional
plane 4 of FIG. 3 including the housing and removable hub according
to an embodiment of the invention.
[0019] FIG. 6 shows a front sectional portioned view taken at cross
sectional plane 6 of FIG. 3.
[0020] FIG. 7 shows a frontal view of the removable hub according
to an embodiment of the invention.
[0021] FIG. 8 shows the integral support flange taken at cross
sectional plane 6 of FIG. 3 according to an embodiment of the
invention.
[0022] FIG. 9 shows a frontal interior view according to an
embodiment of the invention.
[0023] FIG. 10 shows a front view of the continuous hanger support
device shown in FIG. 9.
[0024] FIG. 11 shows a sectional side view of FIG. 9 according to
an embodiment of the invention.
[0025] FIG. 12 shows a side view of the continuous hanger support
device shown in FIG. 9.
[0026] FIG. 13 shows a top view of the traffic control device
according to an embodiment of the invention.
[0027] FIG. 14 shows an enlarged top view of the housing according
to an embodiment of the invention.
[0028] FIG. 15 shows a side sectional view of the housing taken
along cross sectional plane 15 of FIG. 14 according to an
embodiment of the invention.
[0029] FIG. 16 shows a front view of the traffic control device
including the hanger system according to an embodiment of the
invention.
[0030] FIG. 17 shows a frontal view of the continuous hanger system
according to an embodiment of the invention.
[0031] FIG. 18 shows a top view of the embodiment of the invention
shown in FIG. 16.
[0032] FIG. 19 shows a through section taken at cross sectional
plane 19 of FIG. 18.
[0033] FIG. 20 shows a through section taken approximately at cross
section 19 of FIG. 18 according to an embodiment of the
invention.
[0034] FIG. 21 shows a front view of continuous hanger according to
an embodiment of the invention.
[0035] FIG. 22 shows a front view of the hanger system attached to
a single span wire system according to an embodiment of the
invention.
[0036] FIG. 23 shows a side view of the hanger support system's
removable hub according to an embodiment of the invention.
[0037] FIG. 24 shows a front view of the hanger system attached to
a single span wire system according to an embodiment of the
invention.
[0038] FIG. 25 shows a front view of the continuous hanger system
according to an embodiment of the invention.
[0039] FIG. 26 shows a front view of the hanger system attached to
a single span wire system according to an embodiment of the
invention.
[0040] FIG. 26A shows a front view of an adaptable continuous
hanger according to an embodiment of the invention.
[0041] FIG. 27 shows a front view of a continuous hanger system
utilizing a single span wire system according to an embodiment of
the invention.
[0042] FIG. 27A shows an end-on perspective view from the larger
end of the support hub according to an embodiment of the
invention.
[0043] FIG. 28 shows a top view of an embodiment of the
invention.
[0044] FIG. 29 shows a front view of an embodiment of the invention
in FIG. 28.
[0045] FIG. 30 shows a side view of an embodiment of the invention
shown in FIG. 28.
[0046] FIG. 31 shows a cross sectional view taken at cross
sectional plane 31 of FIG. 28.
[0047] FIG. 32 shows a front view of an embodiment of the invention
with the terminal housing and traffic signal doors removed.
[0048] FIG. 33 shows a side view of the continuous hanger and LED
modules in phantom according to an embodiment of the invention.
[0049] FIG. 34 shows a bottom view of the signal housing of an
embodiment of the invention shown in FIG. 32.
[0050] FIG. 35 shows a larger portional interior view of an
embodiment of the invention.
[0051] FIG. 36 shows an isometric view of the continuous
hanger.
[0052] FIG. 37 shows a top view of the terminal housing without the
continuous hanger.
[0053] FIG. 38 shows a top view of both the terminal housing and
the hanger device according to an embodiment of the present
invention.
[0054] FIG. 39 shows a through sectional view of the terminal
housing and hanger device.
[0055] FIG. 40 shows a bottom view of the traffic signal housing
and hanger support shoe with the continuous hanger shown and LED
module shown in phantom.
[0056] FIG. 41 shows a through sectional view of the traffic signal
housing and hanger device.
[0057] FIG. 42 shows a front view of the continuous support hanger
excluding electrical component housings utilizing a two span wire
installation according to an embodiment of the invention.
[0058] FIG. 43 shows a front view of the continuous support hanger
excluding electrical component housings utilizing a single span
wire installation.
[0059] FIG. 44 shows a side view of the continuous load path hanger
and housings with removable hub.
[0060] FIG. 45 shows a front view of the hanger system and the
signal housing (no terminal housing) according to an embodiment of
the invention.
[0061] FIG. 46 shows a front view of an embodiment of the invention
installed horizontally with hanger and span wire attachment device
(doors omitted).
[0062] FIG. 47 shows a large side view of the hanger system
according to an embodiment of the invention.
[0063] FIG. 48 shows a front view of the traffic control device
that includes an integral backplate according to an embodiment of
the invention.
[0064] FIG. 49 shows a front view of a combined-single unit
terminal housing and signal housing according to an embodiment of
the invention.
[0065] FIG. 50 shows a side view of the combination hanger,
terminal and signal housings.
[0066] FIG. 51 shows a cross sectional view of the traffic control
device taken along cross sectional plane 51 of FIG. 49.
[0067] FIG. 52 shows a vertical view of the continuous hanger
according to an embodiment of the invention.
[0068] FIG. 53 shows an enlarged view of a portion of the
continuous hanger of FIG. 52.
[0069] FIG. 54 shows a front view of the traffic control device
according to an embodiment of the invention.
[0070] FIG. 55 shows a side view of the traffic control device.
[0071] FIG. 56 shows a front view of the continuous hanger
according to an embodiment of the invention.
[0072] FIG. 57 shows an isometric view of the single door with
integral backplate according to an embodiment of the invention.
[0073] FIG. 58 shows an isometric view of the single unit signal
and terminal housing.
[0074] FIG. 59 shows a front view of the traffic control device
installed horizontally according to an embodiment of the
invention.
[0075] FIG. 60 shows a front view of the hanger system.
[0076] FIG. 61 shows an isometric view of the traffic control
device single unit housing with integral backplate.
[0077] FIG. 62 shows an isometric view of the single unit housing
without external support flanges.
[0078] FIG. 63 shows a front view of the single unit housing with
internal support flanges (Door and cover omitted for clarity)
according to an embodiment of the invention.
[0079] FIG. 64 shows a cross sectional view of the single unit
housing taken along cross sectional plane 64 of both FIG. 62 and
FIG. 63.
[0080] FIG. 65 shows a front view of the door according to an
embodiment of the invention.
[0081] FIG. 66 shows a cross sectional view taken along cross
sectional plane 66 of FIG. 65.
[0082] FIG. 67 shows a front view of the upper cover at main
terminal portion according to an embodiment of the invention.
[0083] FIG. 68 shows a cross section view taken along cross
sectional plane 68 of FIG. 67.
[0084] FIG. 69 shows a top view of the securement plate according
to an embodiment of the invention.
[0085] FIG. 70 shows a side view of securement plate.
[0086] FIG. 71 shows a side view of the single unit signal housing
and backplate adaptable to steel mast arm supports.
[0087] FIG. 72 shows an isometric rear view of the single unit
housing with integral backplate.
[0088] FIG. 73 shows a front view of the single unit housing and
integral backplate without the door.
[0089] FIG. 74 shows a cross sectional view taken along cross
sectional plane 74 of FIG. 72.
[0090] FIG. 75 shows a side view of the hanger and signal housing
assembly according to an embodiment of the invention.
[0091] FIG. 75a shows a larger "bubble portion" of the embodiment
of the invention shown in
[0092] FIG. 75.
[0093] FIG. 76 shows an isometric view of the means of adjustments
for skewed intersections according to an embodiment of the
invention.
[0094] FIG. 77 shows an isometric view of the center flange
attached to the main mast arm connection.
[0095] FIG. 78 shows an isometric view of parts of FIG. 76 and FIG.
77 assembled.
[0096] FIG. 79 shows an isometric view, exploded in portion, of the
hanger according to an embodiment of the invention.
[0097] FIG. 80 shows an isometric view the hanger assembled
according to an embodiment of the invention.
[0098] FIG. 81 shows an isometric view of the hanger's adjustment
offset hanger.
[0099] FIG. 82 shows an isometric rear view of the single unit
signal housing, backplate and hanger support channel.
[0100] FIG. 83 shows a cross sectional view taken along cross
sectional plane 83 in FIG. 82.
[0101] FIG. 84 shows a front view of the signal housing with the
door removed.
[0102] FIG. 85 shows a side view of an alternate means of vertical
rotational adjustments according to an embodiment of the
invention.
[0103] FIG. 85a shows a larger "bubble portion" of the embodiment
shown in FIG. 85.
[0104] FIG. 86 shows an isometric view of the saddle flange
attached to an existing mast arm.
[0105] FIG. 87 shows a side view of the saddle flange.
[0106] FIG. 88 shows a frontal view of the saddle flange.
[0107] FIG. 89 shows a portional exploded side view of the multiple
axis's support members.
[0108] FIG. 90 shows a side view of the single unit signal housing
and backplate utilized in a conventional rigid application such as
steel mast arm supports according to an embodiment of the
invention.
[0109] FIG. 91 shows an isometric rear view of the single unit with
integral backplate according to an embodiment of the invention.
[0110] FIG. 92 shows a front view of an embodiment of the
invention, without the door, revealing the structural features.
[0111] FIG. 93 shows a cross sectional view taken along cross
sectional plane 93 of FIG. 91.
[0112] FIG. 94 shows a front view of the span wire clamp and hanger
device according to an embodiment of the invention.
[0113] FIG. 95 shows a side view of the clamp/hanger device.
[0114] FIG. 96 shows an exploded view of the clamp/hanger device
with fasteners.
[0115] FIG. 97 shows a front view of the hanger system's lower
connection device adaptable to a conventional flat hanger system
according to an embodiment of the invention.
[0116] FIG. 98 shows a side view of FIG. 97.
[0117] FIG. 99 shows an isometric view of the hanger system's lower
connection device adaptable to a conventional pipe hanger system
according to an embodiment of the invention.
[0118] FIG. 100 shows a front view of FIG. 99.
[0119] FIG. 101 shows a front view of the central hanger system
utilizing a threaded rod adapted to a housing with intermittent
connections according to an embodiment of the invention.
[0120] FIG. 101a shows a bubble portion of the flanged
connection.
[0121] FIG. 102 shows a continuous threaded rod with no
intermittent connections according to an embodiment of the
invention.
[0122] FIG. 102a shows a bubble portion at the tri-stud
fasteners.
[0123] FIG. 103 shows a front view of the central hanger system
utilizing a flexible cable adapted to housings with intermittent
connections according to an embodiment of the invention.
[0124] FIG. 103a shows a bubble portion of the flange
connection.
[0125] FIG. 104 shows a flexible cable that is continuous with no
intermediate connections according to an embodiment of the
invention.
[0126] FIG. 104a shows a bubble portion showing the tri-stud
connections for reference to the novel hanger and prior art
housings.
[0127] FIG. 105 shows a front view of an embodiment of the
invention utilizing a pivotal hanger to support the invention while
attached to two span wires.
[0128] FIG. 106 shows a front view of an embodiment of the
invention utilizing a rigid flat hanger.
[0129] FIG. 107 shows a front view of an embodiment of the
invention utilizing a rigid pipe hanger.
[0130] FIG. 108 shows a front view of an embodiment of the
invention utilizing a conventional cable hanger system to support
the invention while attached to two span wires above the traffic
signal.
[0131] FIG. 109 shows a front view of an embodiment of the
invention utilizing a conventional hanger connected to the novel
span wire clamp as shown in FIG. 94 to support the invention while
attached to two span wires above the traffic signal.
[0132] FIG. 110 shows a front view of an embodiment of the
invention utilizing the span wire clamp as shown in FIG. 94 to
support the invention while attached to a single span wire above
the traffic signal.
[0133] FIG. 111 shows a front view of an embodiment of the
invention utilizing a conventional span wire clamp.
[0134] FIG. 112 shows a front view of an embodiment of the
invention utilizing the span wire clamp to support the traffic
signal, and a second tether wire attached below the traffic
signal.
[0135] FIG. 113 shows an isometric view of an embodiment of a rear
portion of the single unit signal and terminal housing with
integral backplate.
[0136] FIG. 114 shows an isometric view depicting the front cover
portion.
[0137] FIG. 115 shows a front elevation of the housing without the
door.
[0138] FIG. 116 shows a cross sectional view taken along cross
sectional plane 116 of FIG. 113.
[0139] FIG. 117 shows a cross sectional view taken along cross
sectional plane 117 of FIG. 114.
[0140] FIG. 118 shows a cross sectional view taken along cross
sectional plane 118 of FIG. 115.
[0141] FIG. 119 shows an isometric view of an embodiment of the
single unit signal and terminal housing with integral
backplate.
[0142] FIG. 120 shows an isometric view depicting an embodiment of
the continuous central path hanger.
[0143] FIG. 121 shows a side sectional view taken along cross
sectional plane 121 of FIG. 119.
[0144] FIG. 122 shows a front elevation of the housing without the
door.
[0145] FIG. 123 shows a front view of an embodiment of the
invention.
[0146] FIG. 124 shows a view of an embodiment of the continuous
central path hanger similar to that of FIG. 52 that is a continuous
rod installed.
[0147] FIG. 125 shows an isometric view of an embodiment of the
single unit signal and terminal housing with integral
backplate.
[0148] FIG. 126 is a front elevation showing a traffic control
signal's backplate overlaid with photovoltaic solar cells.
[0149] FIG. 127 is an isometric view depicting a traffic control
signal's rear housing and reverse side of its backplate, each
overlaid with photovoltaic solar cells.
[0150] FIG. 128 is a side elevation of a traffic control signal
revealing the housing and visors overlaid with photovoltaic solar
cells.
[0151] FIG. 129 shows a side view of an embodiment of the
continuous load path hanger that is external to a signal housing
and the terminal housing.
[0152] FIG. 130 shows a side view of an embodiment of the
continuous load path hanger that is external to the terminal
housing.
[0153] FIGS. 131 and 131a show side views of an embodiment of the
continuous load path hanger that is external to a single unit
terminal and signal housing.
[0154] FIG. 132 is an exploded side view of the continuous load
path hanger of FIG. 131a.
[0155] FIG. 133 is a top view of the support shoe 3185 of FIG.
132.
[0156] FIG. 134 is a top view of the support flange 3166 of FIG.
132.
[0157] FIG. 135 is a side view of an embodiment of the continuous
load path hanger with spring-type linking device that is external
to a signal housing.
[0158] FIG. 136 depicts a side view of an embodiment of a
continuous central load path hanger with a terminal housing between
wires of a dual span wire system and with the signal housing
beneath both span wires.
[0159] FIG. 137 is a front view of the embodiment depicted in FIG.
136.
[0160] FIG. 138 is a frontal view of still another embodiment of
the continuous load path hanger that is external to a signal
housing and disconnect box.
[0161] FIG. 139 is an exploded view of the span wire connection
device of the embodiment shown in FIG. 138.
[0162] FIG. 140 is a top view from just over the lower span wire of
the embodiment depicted in FIG. 138.
[0163] FIG. 141 is a frontal view of still another embodiment of
the continuous load path hanger that is external to a signal
housing and disconnect box.
[0164] FIG. 142 is an isometric view of the upper and lower support
load transferring support plates used in the embodiments depicted
in FIG. 138 (lower load plate only) and FIG. 141 (upper and lower
load plates).
[0165] FIG. 143 is a top view of still another embodiment utilizing
the continuous load path hanger system supporting a separate
traffic signal backplate in addition to a disconnect box and signal
housing.
[0166] FIG. 144 is a top view of the embodiment depicted in FIG.
143 with the disconnect box and signal housing removed, showing
only the continuous load path hanger and the traffic signal
backplate.
DETAILED DESCRIPTION
[0167] An apparatus is disclosed herein for an integrated traffic
control device comprising a traffic signal housing that is
adaptable to a traffic signal support system and that exhibits
structural improvement over traditional traffic control signals.
The subject invention utilizes a traffic signal support apparatus
for a traffic control signal, wherein the traffic control signal
has a housing containing electrical connections and has at least
one traffic signal indicator electrically connected thereto, and
wherein the traffic control signal is held from a mounting
structure such as a pole, a mast arm, or a span wire, said traffic
signal support apparatus comprising: a continuous load path hanger;
mounting structure connection hardware that connects said
continuous load path hanger to a span wire, a pole, or a mast arm;
and signal connection hardware that fixedly connects said
continuous load path hanger to the traffic signal; wherein said
continuous load path hanger is not the span wire, the pole, the
mast arm, or the housing containing electrical connections (such as
a disconnect box); and wherein said continuous load path hanger in
operation conveys the load of at least most of the stresses of the
traffic signal past the housing containing the electrical
connections and to the span wire, pole, or mast arm. In traditional
traffic signals the gravitational and wind-loaded stresses of the
signal travel a path from the signal housing to the disconnect box
and ultimately to the span wire, pole, or mast arm. As such, this
is an "interrupted" load path, the stresses passing through a load
path that is interrupted by a housing--usually the housing of the
disconnect box. In contrast, in the "continuous" load path of the
subject invention, the stresses travel a load path to and through a
hanger that is not interrupted by a housing such as a disconnect
box. The traffic signal support system can be a continuous central
load path support system integral to a single unit housing.
Alternatively, the traffic signal support system can be a
continuous peripheral load path system. In certain embodiments of
the invention, the single unit housing is adaptable to the hanger
and integrates the electrical terminal housing (replaces the
disconnect box), traffic signal housing, and backplate into the
single unit housing. The subject traffic control signal provides
electrical component housings that maximize the use of a continuous
load path type support hanger, to equally distribute loading and
associated stresses resulting from wind dynamic loads and
gravitational wind-induced impact forces. Wind dynamics can
include, for example, vortex sheddings or galloping, shock loads,
or self-excitations.
[0168] The continuous load path hanger support system can increase
the durability and survivability of traffic signals during high
wind events such as hurricanes. The continuous load path design can
be used for vertical mounting of traffic control devices or it can
also be used for horizontal mounting of traffic control devices.
According to the subject invention, a continuous load path hanger
removes most of the gravitational stresses of the traffic signal(s)
from the terminal housing. Preferably at least 75% of the
gravitational stresses, more preferably at least 90% of the
gravitational stresses, and most preferably substantially all of
the gravitational stresses are removed from the disconnect box or
single unit housing. The continuous load path hanger can be
provided in various embodiments, including as a continuous central
load path hanger or a continuous peripheral load path hanger.
Embodiments of a continuous central load path hanger include
hangers that are substantially one piece rods (either solid or
hollow) or one piece cable; optionally, the rods or cables may be
provided in multi-piece format that can optionally be sequentially
connected. A continuous peripheral load path hanger can occur in
various embodiments, including substantially rectangular-shaped
peripheral load path hangers, elongate ovoid-shaped hangers, or
various other shapes. The continuous load path hangers may be
attached to signalization mounting structures such as a pole, mast
arm, or a span wire via one or more hanger extensions used
sequentially or in parallel, as appropriate.
[0169] The terms "disconnect box" or "terminal housing", as used
herein, are specific to the main electrical component housing and
wiring connections. The term "removable", as used herein, is
specific to, in some embodiments, the hanger connection of the
traffic signal. The traffic control device can adapt to many
different traffic control signal configurations including, but not
limited to, 1-, 2-, 3-, 4-, and 5-section signal head assemblies,
and in some instances multi-type signal assemblies commonly
utilized on diagonal span type intersections. In embodiments of the
invention, housings to secure the lighting displays or other
indicators and the hardware used to suspend the traffic signals
such as hangers, hanger extensions, the disconnect box, and cable
attachment hardware can be encompassed within the term "traffic
control signal."
[0170] The terms "beneath," "below," "on," and "above" are all used
to describe location of parts relative to one another and
encompass, but are not necessarily limited to, parts that are
directly next to each other in such relation. The parts so
described might also be remote in such relation, having other parts
positioned in between.
[0171] In an embodiment of the present invention, the signal
housing is constructed of a single case adaptable to any
combination of signal indicators such as a single light module
commonly used as a "flasher" or the commonly-used three light
indicators--red, yellow, and green. The single housing can even
include four or five lighting displays as a single housing.
According to the subject invention, one single housing can be used
in lieu of multiple conventional housings stacked and fastened
together to direct automobiles in a safe and efficient manner.
[0172] In some embodiments, the housing is expanded to include the
electrical components previously housed in separate housings, with
all electrical components accessible from a single panel type door
that secures the lighting modules and performs also as a backplate.
The improved housing can increase the accessibility of and provide
better access to the electrical components inside and eliminate the
need for terminal housings.
[0173] In some embodiments, the traffic control signal is adaptable
to support systems for signalization, other than wire spans, such
as the support attachment for traffic signal housings secured to a
steel mast arm structure or a pole.
[0174] In certain embodiments, the traffic control device can
include "backplates" integral or non-integral to the electrical
housings. The backplates would be "integral" in the manufacturing
process of vacuum forming, or other like processes, such as
ultrasonic welding, solvent welding glues, and injection mold
processes. The integration of backplate into the single housing
unit enables much lower manufacturing and installation cost, in
some cases over 75% reduction in cost can be appreciated.
[0175] Surprisingly, linear structural requirements can be
minimized or eliminated by the creation of a continuous central or
peripheral load path. The increased accessibility to the electrical
components inside the improved housings is another unexpected
benefit of the traffic control device.
[0176] The use of cost effective material in the traffic signal
housing fabrication process, such as injection molding and/or
thermoforming using thermoplastics and thermosetting plastics, has
enabled an improved efficiency of manufacturing. Approximate
increase of service life to 15-16 years for plastic signal heads
due to the new ability to use improved U.V. resistance materials is
now possible due to novel hanger design utilizing continuous load
path technology. In addition, the dependence of prior art
disconnect boxes on cast metal versus the thermoplastic that can
now be used in the electrical housing's fabrication as a result of
the continuous load path hanger has created reduction of
potentially harmful electrical mis-grounding and shorts. Further,
the electrical housing of the subject invention has an improved
weather-proofing, resulting in safer, more consistently controlled
intersections than with traditional disconnect box and signal
housings.
[0177] In some embodiments, the material for the subject traffic
signal assembly's continuous load path hanger and, in some cases,
the disconnect box or terminal housing, can include, but is not
limited to, cast aluminum. In an embodiment, a cast aluminum
terminal housing with an integral central flange and hub device can
support traffic signals over roadways. Extruded type aluminums,
stainless steel rods, piping or forged metals, formed and/or metal
injection may also be utilized. Fasteners, studs, and other objects
used to secure one or more items can be made of stainless steel. In
some embodiments, the material for the housings can be from the
thermoplastic family such as, but not limited to, thermoplastic and
thermoset plastic composites sometimes comprising acrylonitril
butadiene styrene (ABS), polypropylene (P.P.), polyethylene (P.E.),
polyamide (P.A.) or other polymers, and other like UV protected
products such as poly vinyl chloride (PVC) and polycarbonates (PC)
or nylons.
[0178] Other materials can also be appropriate for the traffic
signal and terminal housings and include, but are not limited to
the following: extruded or formed metals such as aluminum;
pultruded fiberglass; composite fiberglass; additionally reinforced
thermoplastic composites (RTC) such as, but not limited to,
engineered polyetherimide (PEI), polyphenylene sulfides (PPS),
polyetheretherketone (PEEK), and polyetherketoneketone (PEKK). In
some instances carbon fiber or other like products can also be used
not only for the housing, but also in the manufacturing of the
hanger system itself. In some embodiments, a combination of the
above materials can each be used to provide maximum benefits to the
end user.
[0179] The subject invention's hanger and housing system provides
additional benefits in that the installation and subsequent use
housing system, such as standard maintenance or directional
adjustment, can be easier, more cost effective, and safer due to
the decreased risk of possible electrocution from accidental
energizing of metal housings resulting from use of non-metal
materials.
[0180] The shape of the traffic signal or terminal housings can be,
but is not limited to, rectangular, curved, spherical, cylindrical,
octagonal, pentagonal, hexagonal, or tubular.
Example 1
[0181] Referring now to the drawings, according to a first
embodiment of the invention (FIG. 1-FIG. 7), FIG. 1 illustrates an
interior frontal view of a traffic control signal with the door
removed for clarity. The traffic control device 120 comprises a
span wire saddle clamp 131 connected to the existing span wire 130
and an existing hanger 122 with clevis pin 189. In another
embodiment of the invention, the structural extension can be
connected to the upper connection device 186 that is pivotally
connected with pivotal connection 124. The pivot pin 188 pivots
about an axis parallel to the above and below existing span wires
130. In one embodiment, multiple pivots with multiple planes can be
achieved provided vertical movement is restricted.
[0182] Although the traffic control device can accept common single
and dual span (upper and lower) wire hangers such as a "tether
cable", rigid flat aluminum, and even pipe hangers, in an
embodiment of the invention, the hanger is the pivotal assembly
shown and described in U.S. Pat. No. 8,018,350 (Townsend), which is
incorporated herein by reference. The signal reinforcement 119 is
also described in the '350 patent.
[0183] The previous mentioned pivot and clevis pins (188, 189) are
held from lateral movement by the cotter pin 190. The hanger 122 or
an extension (not shown) can be connected to the upper connection
device 186 with suitable fasteners 136. The upper device 186 can be
pivotally connected to the lower connection device 184, and the
connection device 184 can be attached to the lower span wire 130 by
tether clamp assembly 125. In a certain embodiment, the lower
connection device 184 can be mechanically attached to the terminal
housing 117 utilizing integral flange and continuous hanger 116,
which in this embodiment comprises integral support flange 147 and
removable hub 148. In another embodiment, the lower device 184 can
be cast integral with housing 117.
[0184] FIG. 2 illustrates a sectional side view of the embodiment
described in FIG. 1. FIG. 2 shows the access aperture 152 for
securing the embedded stud 187 to terminal housing 117 by fasteners
136. Also shown is the removable hub system which is more fully
described below in reference to FIG. 5, FIG. 6, and FIG. 7. The
signal reinforcement 119 can be secured to the removable hub 148 by
inserting hub embedded stud 187 through traffic signal 132 aperture
153 and through an aperture in signal reinforcement 119 and
completing the compression type connection with appropriate
fasteners 136. The integral support flange 147 is shown with
receivement slot 170 for removable hub 148, (shown without hub's
upper portion for clarity). The door 194 is secured to the housing
117 over the gasket joint 168 by means or placement of door hinge
apertures 173 over the boss(es) with pin(s) 176 and mechanically
attached to housing 117 integral threaded boss 144 with appropriate
fasteners 136. Serrations 174 are also depicted for signal assembly
120 alignment control.
[0185] FIG. 3 shows a top view of the traffic control signal
according to an embodiment of the invention and reveals the housing
117 with support flange 147 along with grommetted wire access 158,
serrations 174 and receivement aperture 153.
[0186] FIG. 4 shows a cross sectional view taken along cross
sectional plane 4 of FIG. 3. FIG. 4 reveals the housing 117,
housing floor 178, housing wall 182 housing roof 180 and wall
beyond 172. The integral support flange 147 receivement slot 170 is
also depicted, along with apertures 153 for the securement of a
removable hub. The lower connection device 184 is secured to the
housing's integral roof reinforcement 159 by fasteners 136 through
apertures 153, 152. Prior to installing, a proper sealant is
applied to the serrations 174 to weather proof the top aperture
153, through housing 117 and integral roof reinforcement 159.
[0187] FIG. 5 shows a cross sectional view, taken approximately
along cross sectional plane 4 of FIG. 3 showing removable hub 148
in place. The removable hub 148 can be installed into the integral
support flange 147 by sliding the hub 148 with integral support
beam 146 into the housing's receivement slot 170 and then
mechanically connecting with fasteners 136 through apertures 153
(as shown in FIG. 4 and FIG. 7). This installation of continuous
central load path hanger 116 completes the continuous load path
from an upper span wire down through the top of the signal as shown
in FIG. 1 and FIG. 2 according to an embodiment of the invention.
Door attachment bosses with pins 176 are also depicted along with
the serrations 174.
[0188] FIG. 6 illustrates a front elevation of a portion the
continuous central load path hanger 116 (with removable hub 148
already installed) according to an embodiment of the invention. The
central continuous load path comprises the lower connection device
184, as previously described with reference to FIG. 1, secured to
the terminal housing 117 over serrations 174 by inserting an
embedded stud 187 through the integral roof reinforcement 159 using
a fastener aperture 153 and then securing with fasteners as
appropriate, such as, for example, with a threaded nut. At this
stage, in operation and prior to installing removable hub 148, the
housing 117 is secured from an upper span wire (not shown here, but
depicted in FIG. 1) through a continuous central load path
extending from the uppermost span wire down to the bottom of the
housing's floor 178. Removable hub 148 can be attached to a
conventional traffic signal housing as can be seen depicted in FIG.
1 and FIG. 2. In an embodiment of the invention, the removable hub
can be attached to a traffic control device reinforcement that is
positioned beneath the roof of a traffic signal housing of a
traffic control device. The traffic control signal's wiring can be
completed prior to hanging the traffic signal housing to save
maintenance cost while working in an intersection with traffic
flow.
[0189] After attaching the hub 148 to the traffic signal housing,
the installation of the continuous central load path support system
116 can be completed by inserting the hub's integral support beam
146 into the support hanger's receivement slot 170 and hub access
slot 161. Fasteners 136 can be used to secure fastener apertures
153 in integral support flange 147 and the hub's vertical support
flanges 129. Slot covers 164 can be used for weather-proofing with
an appropriate sealant such as silicone-type exterior grade caulk.
The wire access to the signal housing is by way of the removable
hub's wire apertures 152. The removable hub's embedded stud 187
(for connection to the traffic signal housing) and serrations 174
are also shown. The terminal housing's floor 178 and roof 180 are
shown for reference.
[0190] FIG. 7 shows a front view of the removable hub 148
comprising ascending vertical support flange 129 and transverse
support beam 146. The removable hub's ascending vertical support
flanges 129 are integral to and support the transverse support beam
146. The hub's receivement slots 154 are located below the slot
covers 164. The removable hub's fastener apertures 153 are utilized
for final securement.
Example 2
[0191] FIG. 8 illustrates a slight modification of the embodiment
described above and depicted in FIGS. 1-7. In this embodiment the
integral support flange 147a is supporting the removable hub 148a
integral ascending vertical support 129a using the removable hub's
integral transverse support bar 146a to carry the primary loads
along with the associate support flange 166, which is secured by
bolting the support flange 166 to the housing fasteners 136 through
each of the fastener apertures 153. The housing's roof 180a and
floor 178a are depicted for ease of reference.
Example 3
[0192] Another embodiment of the invention is depicted in FIGS.
9-12, wherein the traffic control signal includes a continuous
central load path traffic signal hanger and a removable terminal
housing supported by the continuous load path traffic signal
hanger.
[0193] FIG. 9 depicts the primary components of an embodiment of
the present invention including a continuous central load path
hanger 216 and removable terminal housing 215. Sometimes a signal
reinforcement 219 can be included. This embodiment of the invention
can be provided without a removable hub. The terminal housing can
provide a weatherproof housing for electrical components of traffic
control devices.
[0194] In this embodiment of the invention, a dual span wire system
is depicted with the existing upper span wire 230 used to support
the gravitational load of the traffic control device 220. The
saddle clamp 231 is fastened to the span wire 230 by utilizing the
appropriate fasteners 236. The hanger/extension 222 is secured to
the clamp 231 by a clevis pin 289 inserted into the clamp's clevis
yokes. A final attachment can be made by inserting cotter pin 290.
The upper connection device 286 is mated and attached to the
hanger/extension utilizing appropriate fasteners 236. The upper
connection device 286 is connected to the lower connection device
284 with pivot pin 288 to allow rotational movement about an axis
parallel to the span wires. The pivotal connection is secured with
cotter pin 290. The lower device 284 is mechanically attached to
the lower span wire 230 with tether clamp assembly 225.
[0195] The continuous load path hanger 216 can now receive the
removable terminal housing 215. The removable terminal housing 215
can be manufactured from a thermoplastic material. The continuous
load path hanger system 216 provides structural support such that
plastic can be used in the fabrication process in lieu of the prior
art practice of using materials such as a cast aluminum alloy that
were required to allow the terminal housing to provide structural
support for the traffic control signal in a load-bearing capacity
to support the weight of the traffic signal housing. In embodiments
of the subject invention, the terminal housing now functions
primarily as a means to provide weather-proofing of the traffic
control signal's electrical components. The removable terminal
housing's rear portion 292 is adaptable to the hanger system 216 by
sliding the terminal housing from the rear such that the terminal
housing is placed over and around the continuous load path hanger's
upper and lower attachment 266 and is temporarily secured utilizing
fasteners 236. The traffic signal housing 232 is then attached to
the continuous load path hanger 216 by securing the signal
reinforcement 219 directly under the interior surface of signal
housing roof 280. An appropriate fastener 236 and embedded stud 287
can be utilized.
[0196] For clarity, in FIG. 9 the terminal housing's front portion
is not shown. The electrical components, such as wiring 238, main
conductors 268, and terminal blocks 240, are shown. The wire access
is provided through apertures 252 and grommetted access 258.
[0197] FIG. 10 shows a front view of the continuous load path
hanger 216. The upper connection 286 is pivotally connected to the
lower connection device 284 by pivot pin 288. The attachment
flanges 266 provide a shelf, and can also provide a grooved support
plate for the securement of the two part housings 292, 293 (not
shown). The attachment flanges 266 can be round so that rotational
adjustments to the traffic control assembly can be provided when
required. Set screws 2100 are tightened after final, rotational
position is established to prevent unwanted movement of the traffic
control signal. Also shown is the embedded stud 287 used to secure
and attach the traffic signal housing. The central load bearing
member 229 is also shown along with lower integral hub connection
with serrations 274. The housing's retainer flange 266a is shown
over the hub attachment flange 266.
[0198] FIG. 11 illustrates a sectional side view of the view
depicted in FIG. 9. The housing's retainer flange 266a is located
over hub support/attachment flange 266. The terminal housing's rear
portion 292 and front portion 293 can join together at gasketed
joint 268.
[0199] FIG. 12 illustrates a side view of the hanger as described
in FIG. 9, FIG. 10, and FIG. 11 with the terminal housing 215 and
traffic signal housing 232 is removed.
Example 4
[0200] FIG. 13 shows a top view of the continuous load path hanger
with removable terminal housing 315, continuous load path hanger
316, and the two-part housing comprising a rear portion 392
providing access to the electrical components and related
attachments which can include access for the main conductors
through the grommetted wire access 358 according to another
embodiment of the invention. Final securement for front portion 394
can be provided by mechanically attaching the connection flanges
377 with appropriate fasteners 336 that optionally can be
integrally constructed to form a receivement flange along the front
or rear housing's periphery.
[0201] FIG. 14 shows a top view of the two-part housing embodiment
(FIG. 13) in slight separation. The terminal housing's rear portion
392 and the terminal housing's front portion 393 each have walls
382 and roofs 380. The gasketed joint 368 is common to each
portion's periphery. The hanger integral support/retainer flange
366a (not shown) can be used in supporting each housing portions
392, 393 by inserting the integral support/attachment flange 366
(shown in FIGS. 11 and 12) into the receivement slot 370. The final
connection can be completed by sliding each portion towards one
another such that the connection flange 377 overlaps the area
providing the threaded bosses. The appropriate fasteners 336 can be
inserted through the connection flange 377 and into the threaded
bosses 344.
[0202] FIG. 15 illustrates a side sectional view taken along cross
sectional plane 15 of FIG. 14 of the two piece housing embodiment.
The housing's roof 380 is shown with integral retainer flange 366a
comprising a receivement slot 370 and gasketing 368 to hub access
361 for providing a weather proof connection upon final attachment
of the housing portion. Also shown are attachment apertures
353.
Example 5
[0203] FIGS. 16-20 illustrate an additional embodiment of the
invention. The removable hub 448 system can be utilized for
additional ease of operation. The continuous load path hanger 416
is connected to a lower span wire by the tether clamp assembly 425.
The tether clamp assembly (similar to 225 as depicted in FIGS. 11
and 12) includes the span wire's capture and securement with a
grooved boss integral to the hanger. Another grooved boss is
captured by a u-bolt through the second boss and around the span
wire, then back through the hanger's apertures and over the
integral boss. The tethered clamp can be secured by appropriate
washers and nuts to complete the attachment of the hanger 416 lower
connection device 484 to lower span wire 430.
[0204] The new tether clamp assembly can provide the added support
to enable the lower span wire to stay in connection with the
continuous load path hanger. In the event of high winds, the
tethered clamp is less likely to disengage the lower span wire and
cause the traffic control signal to fall from the span wires.
[0205] After attaching the removable hub 448 to the traffic signal
housing 432 and installing the signal reinforcement 419 (as
appropriate), the removable hub 448 and attached traffic signal
housing 432 can be lifted and the hub's transverse support beam 446
is easily slid into the hanger's receivement slot 470. At this
point, the hub is then positioned such that the hub and hanger
connection apertures 453 are aligned and can be mechanically
connected using the appropriate fasteners 436. The housing's rear
portion is attached by inserting the appropriate fasteners 436
through the housing attachment flange 466. This connection
rigidifies the hanger 416, the removable hub 448, and the
electrical housing 492 together. The threaded bosses 444 can
provide for final attachment of the housings front cover (not
shown), and the electrical connections (not shown) can be completed
as previously described.
[0206] FIG. 17 depicts a front view of the embodiment of the
continuous load path hanger shown in FIG. 16, but here depicted
without the removable housings in place.
[0207] FIG. 18 shows a top view of the terminal housing rear
portion 492 and front portion 493 in approximate proportions. The
front/cover portion 493 is attached to the terminal housing rear
portion 492 using fasteners 436. The attachment of the two portions
produces a weather-tight connection over gasketing 468 after final
tightening. In some embodiments, the proportions of the housing's
depths can vary, and the front and rear portions can be reversed or
varied in size as shown in FIG. 18.
[0208] FIG. 19 illustrates a through section taken at cross
sectional plane 19 of FIG. 18. The terminal housing's rear portion
492 and the front portion 493 are secured to the vertical support
flange 429 which is integral to the hanger 416 mid-portion and is
designed to support the terminal housing rear portion 492 and front
portion 493. The housing rear portion 492 utilized an integral
vertical support channel-type flange 451 that receives the hanger's
vertical support flange 429, each having fastener apertures 453
complementary to each other for attachment. Access for wiring,
including the main conductors is provided with aperture 452 in
hanger's vertical support flange 429. Vertical support flange 429
also provides the support as previously described with receivement
slot 470 along with apertures 453 for final securement of a
removable hub. Apertures for additional means of securement of the
housing rear portion 492 are also shown at upper support flange
466. The housing's front portion 493 is also supported in part by
flange 466. Threaded bosses 444 can be provided for final
attachment the of housing's portion 493.
[0209] FIG. 20 also illustrates a through section taken at
approximately cross sectional plane 19 of FIG. 18. The rear housing
492 can be attached to the hanger's vertical support flange 429 by
the fasteners 436. The final connection at the housing's roof 480
is also secured to upper support flange 466 by fastener 436 into
threaded boss 444 (shown in FIG. 19. The final attachment of the
removable hub 448 is shown using fasteners 436. The hub's integral
support beam 446 is shown in phantom resting in the hanger's
receivement slot 470. Housing front portion 493 is shown
mechanically attached over the gasketed joint 468 using appropriate
fasteners 436 to complete a water-tight, compression-type
connection.
[0210] The gasketed connection joint 468 between the terminal
housing's front and rear portions can be located toward the front
of the housing in certain embodiments, while in others at the
center, and in still others, the gasketed connection joint can be
toward the rear of the housing, having a lesser portion, smaller
depth rear housing 492 to allow even greater access to electrical
components.
Example 6
[0211] FIG. 21 illustrates a slight modification of the embodiment
described with regard to FIGS. 16-20, and shows the continuous load
path hanger 416 with removable hub 448 connection. The hub's
vertical support flange 429 comprises removable hub's support beam
446 and is designed to be complementary to the hanger's integral
support flange 447 that comprises a receivement slot 470 to accept
and mate with support beam 446. The integral support flange 447 and
vertical support flange 429 are connected using fasteners 436
through apertures 453 to complete the continuous load path. Next,
the two-part housing 492, 493 installation can be performed as
previously described.
Example 7
[0212] FIG. 22, FIG. 23, FIG. 24, FIG. 25, FIG. 26, and FIG. 27
illustrate the upper part of the same basic hanger system depicted
in FIGS. 16-20, but modified for attachment to a single wire
system.
[0213] FIG. 26a shows the continuous load path hanger system 416 in
an embodiment adaptable to common/conventional signal housings that
are currently in use today. The support hub 4112 can be utilized as
a primary connection or can fit over existing tri-stud or other
similar attachments used to connect individual signal heads. Two
hubs 4112 are positioned opposing one another and loosely connected
together by inserting the threaded ends of a connection rod 4114
and pre-adjusting to the appropriate length to fit snugly into the
signal head. The upper hub is then positioned below either the
existing removable hub 448, embedded stud 487, or the extension
threaded rod 4116 and screwed together until tight and secured to
the housings as appropriate. The lower hub 4112 with the protruding
extension rod 4116 is secured evenly by adjusting the connecting
rod 4114 and final securement using stay nuts 4120. The process can
be repeated as necessary to complete the continuous hanger system
to any multi-signal head application.
[0214] FIG. 27a shows an end-on perspective view from the larger
end of the support hub 4112 with apertures 452 used to complete
electrical connections. The surface-pressure area of the hub 4112
is shown in "hatch" lines. The integral nut 4122, shown in phantom,
is used to secure the hub 4112 to the signal housing's roof or
floor. It creates a surface pressure type connection that is
rigidly connected by the extension threaded rod 4116 into the
integral coupling 4118 during installation.
Example 8
[0215] FIG. 28, FIG. 29, FIG. 30, and FIG. 31 illustrate yet
another embodiment of the present invention by depicting the novel
continuous load path hanger system mounted externally to the
terminal housing, which provides an uninterrupted, circuitous
central load path that is distinctly separate from the terminal
housing and therefore provides improved structural integrity as
compared to prior art devices by removing substantially all of the
weight, and wind induced loads of the traffic signal housing from
the terminal housing. FIG. 28 shows a top view of an embodiment of
the invention having a continuous load path hanger around a
removable terminal housing 515 and utilizing a span wire attachment
as previously described (either single wire or dual wires are
acceptable). The hanger system's removable hub 548 is connected to
the rear hanger support frame 549 portion by utilization of the
yoke-type connection flange 569 with the appropriate fasteners 536
through apertures 553. Also shown is the removable housing's rear
portion 592 mechanically fastened to the front housing portion 593
using the appropriate fasteners 536.
[0216] FIG. 29 shows a front view of the continuous load path
hanger 516 and terminal housing 515, preferably made of plastic.
Also shown are the main conductor's 562 access apertures 558. The
removable hub 548 is shown along with the lower attachment
fasteners 536 used to attach the hub to the hanger, completing the
circuitous support structure. The removable front covers 593 of the
housing 515 are also depicted with fasteners 536. The hanger's
internal support flanges 529 (shown in phantom) are fastened to
each other with appropriate fasteners to secure the terminal
housing 515 to the hanger 516.
[0217] FIG. 30 shows a side view of the hanger system 516 securing
the terminal housing 515. The removable hub's 548 integral support
bar 546 can mate with the housing's receivement slot 570 to help
align the final securement of the hanger to the hub using fasteners
536.
[0218] FIG. 31 shows a section view taken at cross sectional plane
31 of FIG. 28 without the terminal housing 515. The integral
support flanges 529 with apertures 553 for fasteners are depicted
and are utilized to secure terminal housing. The removable hub's
support bar 546 used to align and secure the housing is also shown.
In certain embodiments, a support/attachment flange 566 (shown in
phantom) may also be utilized as long as the housing has a
receivement slot or recess. The hanger support frame 549 is shown
for reference.
[0219] In operation, the hanger's rear portion is secured to one or
more span wires as appropriate and as previously described, thereby
suspending the hanger. The terminal housing's rear portion is then
placed into the suspended hanger and secured, allowing for the
electrical portion to be installed. The removable hub is attached
to the traffic signal housing, also previously described, along
with appropriate electrical wiring. The attached traffic signal
housing and hub support flange are aligned and placed into the
terminal housing's receivement slot and then the structural
attachment of the removable hub to the hanger is completed using
appropriate fasteners. The final electrical connections can be
completed and the two weatherproof cover panels/front of the
terminal housing can be installed.
Example 9
[0220] FIG. 32 shows another embodiment of a continuous central
load path hanger 616, with terminal housing 617 and traffic signal
housing 618 together comprising a single unit traffic control
device 620. The lower connection device 684 can be mechanically
attached to the existing lower span wire 630 using an appropriate
tether clamp assembly 625. The lower connection device 684 is
pivotally connected 624 to upper connection device 686. The
terminal and signal housings 617, 618 vertical support channel
attachment flange 651 is shown primarily as a point of reference in
this drawing. Also for reference, the hanger 616, grommetted wire
access 658, signal housing support shoe 685 and the signal LED
modules 6100 (shown in phantom) are illustrated as points of
reference.
[0221] FIG. 33 shows a side view of FIG. 32's single unit housing
traffic control signal. The continuous central load path hanger 616
is shown in phantom between the hanger connection device 684 and
the hanger's support shoe 685. The hanger's support flange 666
works in conjunction with the shoe 685 to capture housings 617, 618
to further secure the traffic control device 620 and support the
single unit housing.
[0222] FIG. 34 illustrates a bottom view of the signal housing 618
serrations 674 used to secure the signal housing's directional
requirements. The housing's door 694 is shown pivotally connected
by boss with pin 676 and secured over the gasketed joint 668 using
the signal's door latch 696. The housing door can be secured by
tightening with appropriate fasteners 636. The traffic control
device's LED modules 6100 and visor 634 are shown in phantom as
reference.
[0223] FIG. 35 shows a portional and larger front view of the
interior of the housings comprising the continuous central load
path hanger 616, the terminal housing 617, and signal housing 618.
The housings 617, 618 are mechanically attached to the hanger 616.
Clamping fasteners 626 are inserted and secured through apertures
653 that are provided and aligned in the housing's vertical support
channel 651. In some embodiments, additional metal reinforcement
flanges can be incorporated into the support channel 651. The
terminal housing 617 provides a weather proof grommetted wire
access 658 for the main conductors 662 entering and exiting the
device. Electrical terminal blocks 640 are provided as a means to
connect terminal wiring 638 between the signal's LED modules (not
shown) and the main conductors 662 as appropriate to the traffic
control signal/device's primary function in directing traffic. The
terminal housing's door (not shown) connection bosses 644 are
shown, as are roofs 680, walls 682, and the terminal housing floor
678. The hanger's support flange 666 is shown also as a point of
reference.
[0224] FIG. 36 shows an isometric portional view of an embodiment
of the continuous load path hanger 616. Apertures 653 in the lower
connection portion 684 are used to secure a lower span wire (not
shown) utilizing an appropriate span wire clamp assembly (not
shown). The stabilizing, integral support flange 666 is shown above
the hanger's square tubular portion 654. In an embodiment of the
invention, the square tubular portion 654 can be integrally
connected to the round tubular portion 656, which itself can be
integrally connected to the continuous hanger's support shoe 685.
The hanger's square portion 654 is configured to mate and
mechanically attach to the terminal housing 617 (not shown). The
hanger's round portion 656 is configured to mate with the signal
housing 618 (not shown), allowing for rotational adjustments and
final securement using appropriate fasteners.
[0225] FIG. 37 illustrates a top view of the terminal housing 617
without the continuous hanger to reveal the receivement area for
the hanger into the terminal housing's vertical support channel
651. The housing's removable front cover 693 can be secured over
the gasketed joint 668 using appropriate fasteners 636 into
threaded bosses 644.
[0226] FIG. 38 illustrates a top view of the terminal housing 617,
and depicts the hanger 616 as placed into the housing's support
channel 651 below the hanger 684 integral support flange 666.
[0227] FIG. 39 shows a through sectional view of the terminal
housing 617 and the hanger 616. The hanger's square tubular portion
654 is depicted positioned into the housing's support channel and
secured by clamping type fasteners 626 as appropriate. Arcuate
slots 628 can align and mate with wire apertures 652 to provide
access between the upper and lower housings (terminal housing 617
and traffic signal housing 618, respectively) for wiring as
necessary. The arcuate slots 628 and the wire apertures 652 share a
common radius central to the hanger.
[0228] FIG. 40 illustrates a bottom view of the traffic signal
housing 618 and hanger system 616. The solid round tubular portion
656 of the continuous hanger 616, shown in phantom, is integral to
the support shoe 685.
[0229] FIG. 41 shows a through sectional view of the traffic signal
housing 618 and continuous hanger 616, more specifically the solid
round tubular portion 656 positioned into the support attachment
channel 651. The solid round tubular portion 656 can be aligned
such that it is directly over the cradle base 642 of the housing.
After a final determination of rotation, the housing is secured to
the continuous hanger 616 in a fixed position by utilizing the
appropriate fasteners 636 through and placing them through the
apertures 653. Wire access is provided utilizing the apertures 652
as previously described in the embodiment illustrated in FIG.
39.
[0230] FIG. 42 illustrates a front view of one embodiment of the
continuous load path hanger system 616. As reference, and in
portion, the upper terminal housing 617 and lower traffic signal
housing 618, housing roofs 680 and housing floors 678 are shown.
The continuous central load path provides several distinct
advantages, particularly when combined with the single unit traffic
control signal housing.
[0231] The single unit traffic control signal housing can provide
the functionality of securing the lighting displays (modules) and
keeping electrical connectors dry and easily accessible by
combining the terminal housing and the traffic signal housing. The
single unit housing is more durable to high velocity winds, as the
terminal housing and signal heads are removed from the structural
load path of the system. Utilizing the single unit housing with a
central continuous load path instead of an interrupted circuitous
load path, (as found in traditional traffic signals) can provide
better structural integrity.
[0232] The single unit housing provides a more efficient routing of
signal wiring and access for same. The improved electrical wire
routing reduces the stresses the cabling experiences with age by
allowing the attachments to remain in the line of flow of the
conductors. Containing the electrical wiring within a single unit
housing can help mitigate the risk of breaking electrical
connections, thereby minimizing operational problems with
signalization.
[0233] In the present invention, the terminal housing, whether
provided separately or contained within a single unit housing, can
primarily provide a weather proof housing for electrical components
and connections of traffic signals rather than provide a means for
structural loading. For example, instead of using the terminal
housing to support the traffic signal by requiring multiple linear
load paths, the single unit housing can decrease the likelihood of
structural failure that can be caused by interrupting the floor of
the terminal housing to accept removable hubs attached to traffic
signals. Breakage as commonly occurs with traditional traffic
signals, especially at the cantilevered shelf area of the
disconnect box, during high wind events is totally eliminated.
[0234] In an embodiment of the invention depicted in FIG. 42, the
complete traffic signal hanger system comprises the following: An
upper connection device 686 mechanically connected to an existing
hanger extension 622. The existing hanger is connected to a span
wire saddle clamp 631, which is mechanically connected to the
upper-load-bearing span wire 630. The existing hanger extension 622
and clamp 631 can be connected by a clevis pin 689 on an axis 90
degrees in plane to the upper and lower span wires 630 and secured
to the span wire clamp 631 with a cotter pin 690. The clevis pin
689 is positioned perpendicular to the described span wires 630 and
can have limited, if any, movement. The clevis pin 689 can function
to support the hanger extension 622 below in a fixed position. The
upper connection device 686 is mechanically connected to the
continuous hanger 616 below using a pivot pin 688, which is
parallel to the upper and lower span wires 630 allowing for
rotational movement of the traffic control assembly 620 in a
direction approximately 90 degrees to the span wires 630.
[0235] The present invention's hanger system can accept commonly
used single and dual span (upper and lower) wire vertical hangers
such as tether cables, rigid flat aluminum hangers, and pipe
hangers. In an embodiment of the invention, the preferred span wire
hanger system is the pivotal assembly as described. The continuous
hanger 616 is connected to a second lower span wire by the tether
clamp assembly 625. The tether clamp assembly 625 can be used to
capture the span wire and secure the span wire to the lower
connection device. The tether clamp assembly can comprise a u-bolt,
a grooved boss integral to the hanger, another grooved boss, and
appropriate washers, nuts, and fasteners 636. The span wire is
captured between both grooved bosses and secured by a u-bolt placed
through the second grooved boss, through the apertures within the
hanger and then over the integral boss. The u-bolt is secured by
appropriate washers, nuts, and fasteners 636 to complete the
attachment of the hanger's lower connection device 684 to the lower
span wire 630 using the tether clamp assembly 625.
[0236] The hanger support plate 666 is utilized for placement and
additional stability for the terminal housing 617. The square
tubular portion 654 is designed to accept the housing's support
channel type flange (not shown). The hanger's round tubular portion
656 is designed to accept the traffic signal housing 618. Also
shown is the hanger support shoe 685 which can be used during the
placement of the hanger to provide additional stability for
securement of the traffic signal housing. In an embodiment of the
invention, the support shoe 685 can be integral to the traffic
signal housing. In some instances, the support shoe 685 is
adjustable and can accept varying height assemblies. The shoe
serrations, protrusions or grooves on the traffic signal housing
can mate with the support shoe 685 to provide a secure
attachment.
[0237] FIG. 43 shows a front view of another embodiment depicting
the invention's adaptability to a single span wire installation. In
this application, the lower connection device 684 is modified to
accept, but is not limited to accepting, a span wire saddle clamp
631 with a connecting type clevis pin secured with a cotter pin
690.
Example 10
[0238] FIG. 44 illustrates a portional side view of an embodiment
of a continuous load path hanger and housings with removable hub
648 depicting the connection at the terminal housing 617. In this
embodiment of the invention, the removable hub 648 contains an
integral solid round tubular portion 656 that is mechanically
connected to the traffic signal housing 618 as previously
described. This can be done prior to installing the hanger's square
tubular portion. The hanger portion above is installed as
previously described to the existing span or span wires as
appropriate.
[0239] The terminal housing 617 is positioned and temporarily
secured to the upper hanger and housing apertures 653 utilizing
clamping fastener(s) 626. The hub 648, with attached signal housing
618, is lifted and easily slid into the hangers' receivement slot
670. The hub is then positioned such that the hub's vertical
transverse support beam 646 is aligned so that the hub and hanger
connection apertures 653 of the hanger 616 and of removable
removable hub 648 can be mechanically connected using appropriate
fasteners 636. The rear walls of the housing are mechanically
attached by inserting the appropriate fasteners 636 and/or clamping
fasteners 626 through the housing wall apertures 653 and hanger's
apertures 653 and tightening as appropriate. This connection
rigidifies the continuous hanger 616, the removable hub 648 and the
terminal housing 617 together. In these embodiments, as well as in
others of the subject invention, it may sometimes be desirable to
add load spreading reinforcement plates in securing the plastic
housings to the metal support system, i.e. added overlay flanges,
for example, at fastener attachment points of at areas of
connection of plastic to metal. At this stage the electrical
connections (not shown) can be completed as previously
described.
Example 11
[0240] FIG. 45 illustrates an additional embodiment of the hanger
and signal housing device, wherein the terminal housing is omitted
and all electrical connections are contained within the signal
housing 718. The lower connection device 784 in this embodiment is
adaptable to the span wire clamp 731 as previously described. The
device 784 is also integral to the hanger's "gooseneck"
weather-proof conductor access apertures 758 while also providing a
portion of the hanger's 716 structural requirement. The hanger's
sometimes round tubular portion 754 and the hanger's support flange
766 are both integral to the hanger as described above. The
apertures 752, including arcuate slot 728 that mates with hanger
apertures allowing final signal rotational adjustment as
applicable, can provide access to electrical wiring and electrical
wire routing. The installation is completed as previously
described.
Example 12
[0241] FIG. 46 illustrates an embodiment of the invention wherein
the continuous load path hanger system 816 is used to horizontally
install a traffic control device wherein terminal housing 817 and
traffic signal housing 818 are combined in a single unit housing
8126. In an embodiment, the continuous load path hanger system
comprises two vertical support flanges 829 that can be integral to
the hanger's signal support flanges 866 that themselves can be
integral to the transverse support beam 846. In some embodiments,
the traverse support beam 846 is a solid round tubular portion and
in other embodiments, the traverse support beam 846 can be square
tubular or triangular tubular. The signal housing can comprise a
single door or multiple doors, but the door is not shown for
clarity. In some embodiments an integral backplate is also
utilized.
[0242] The combined single unit housing 8126 (comprising terminal
housing 817 and signal housings 818), and the electrical
installation is performed generally as described above with
reference to FIG. 35, FIG. 39, and FIG. 41. Wire access through
mating cast supports is provided by apertures 852.
[0243] FIG. 47 shows a side compositional view of the hanger system
816 according to an embodiment of the invention. The hanger's
vertical flanges 829 are integral to the lower span wire clamp
portion 8102 that captures and secures the span wire 830 by
mechanically attaching the upper span wire clamp portion 8104 using
appropriate fasteners 836. In an embodiment of the invention, an
appropriate fastener is placing a u-bolt through the apertures 853.
The upper span wire clamp portion 8104 and lower span wire clamp
portion 8102 each have cradle bases 842 that are also shown. The
weather proof wire accesses 858 are depicted and are integral to
the assembly's terminal housing 817 to provide a means to bring
electrical conductors into the terminal housing 817 and signal
housing 818 and a means for the conductors to exit the housings as
appropriate. The receivement slot 870 is shown as a gateway to the
horizontal support channel flange 860 used to secure the transverse
support beam 846 and is attached as previously described with
respect to FIG. 35, FIG. 39, and FIG. 41. In some embodiments, the
flange 829 is mechanically connected using the appropriate
fasteners 836 to secure the housings with rotational adjustments
and securement over mating serrations 874. The signal's LED
lighting display module 8100 is shown in phantom as a point of
reference along with the traffic signal's visor 834 and door 894
with attachments such as fasteners 836, bosses with pins 876, and
door latch 896.
Example 13
[0244] In still another embodiment of the invention, a single unit
housing 9128 can include an integral backplate along with the
combined terminal housing 917 and traffic signal housing 918. FIG.
48 shows a front view of the integral backplate 9106. The integral
backplate can be used to enhance the visibility of signal heads,
especially backplates with retro-reflective borders, particularly
at night or under low-visibility conditions. The integral
backplates can also reduce crashes by improving driver awareness of
traffic signals. The integral backplates can provide an
uninterrupted surface for retro-reflective tape 9110.
[0245] By incorporating the backplate into the mold/manufacturing
process and making the backplate integral to the signal housing, an
attachment is created to the signal housings' periphery providing a
structural improvement by way of a continuous connection during the
manufacturing process. The integrated backplate can help reduce or
eliminate stresses on attachment points to the traffic control
device signal. These stresses are created from the extra wind
loading produced from the increase in surface area as a result of
adding a backplate. An integrated backplate eliminates the need for
fasteners such as the weak, conventional, self-tapping screws to
attach the backplate to the traffic control signal.
[0246] The single unit housing with integral backplate can help
decrease the stresses caused by the extra wind loading due to the
increase in surface area by allowing the system to shed most, if
not all, horizontal wind loads. Not only is stress minimized on the
traffic control device, but stress is also minimized on the signal
wires, support poles, and hardware. The single unit housing with
integral backplate, by incorporating the backplate into the
mold/manufacturing process and making the backplate integral to the
signal housing, creates an attachment to the signal housings'
periphery providing a vast structural improvement by way of a
continuous connection during the manufacturing process. Signal head
backplates can be manufactured such that they are integral to the
signal housings during the manufacturing process. For example,
vacuum forming, injection molding, welding, and gluing are
preferable methods of manufacturing an integral signal head
backplate.
[0247] As depicted in FIG. 48, the backplate 9106, which in some
embodiments receives open louvers to allow passage of air (not
shown), is integral to the signal housing 918 except at the upper
portion where the terminal housing 917 is located. The
retro-reflective border is shown around the backplates 9106
peripheral outside edge, sized as appropriate to governmental
specifications. The retro-reflective border can also, in some
embodiments, continue across the terminal housings' 917 door using
an appropriate retro-reflective tape 9110 to complete the border
arrangement in span wire type installations.
Example 14
[0248] FIG. 49 illustrates a front view according to yet another
embodiment of the invention, a single case modular design
comprising the terminal housing 1017 and signal housing 1018. The
span wire attachments and lower connection device 1084 are shown in
part and are substantially as previously described with respect to
other embodiments. The single unit signal and terminal housing
10126 upper portion is shown with weather proof wire access 1058
and is depicted in phantom below gasketed joint 1068. The backplate
10106, as integral to the housing single unit door 10124, also
provides a means for securement of the LED modules 10100, and an
uninterrupted surface to add required retro-reflective tape as
previously described. As a point of reference, the continuous load
path hanger system 1016 is also shown in phantom in a vertical
application in the traffic control device. The continuous load path
hanger 1016, as previously described, is adaptable to alternative
connections to existing span wire systems.
[0249] FIG. 50 provides a side view of the single housing's front
portion 10124 and rear portion 10126. For additional weather
protection, the top of 10124 is nested under 10126 and further made
weather tight by utilizing compression type fasteners 1096 over the
gasketed joint 1068. The pivotal hanger assembly 1024 connection
can be used and is shown attached to the existing span wire 1030 as
previously described with respect to other embodiments. Also as
previously described, the continuous hanger system 1016 is shown in
part and in phantom, and is used to mechanically secure the single
unit door and backplate 10124 and the single unit signal and
terminal housing 10126 by tightening the signal housing support
shoe 1085 with appropriate fasteners 1036. The electrical terminal
block 1040 and wiring 1038 are shown in phantom also as a point of
reference along with the signal visors 1034 and backplate
10106.
[0250] Wind loading is always the main structural consideration
when designing a traffic signal support system. Aerodynamic
responses in general are typically classified into four different
types: vortex shedding, galloping, flutter, and buffeting, all
applicable to some extent to span wire signalization. When wind
passes over an object, particularly a narrow object such as a
traffic signal and/or a signal backplate, flow separation occurs.
Alternating, and most of the time, harmful vortexes are then formed
creating different lift forces on each side of the traffic signal
which induces destructive resonating movements. In order to help
sustain and resist harmful shock loads and fatigue related
stresses, spoilers 1090 are sometimes provided along the bottom and
even sometimes along the sides, and even in some embodiments around
the entire periphery of the traffic control device. The spoiler
1090 is sometimes utilized to increase drag which in some
embodiments will reduce or minimize torsional loads and stresses
due to wind speed and direction.
[0251] In some embodiments the spoiler 1092 (shown in phantom) may
preferably be positioned to deflect rather than capture as
previously described spoiler 1090. The shape of the spoilers 1090,
1092 may be angular, concaved, convexed, or in some combination of
angles and curvatures. In conjunction with utilizing control
surface applications such as spoilers "mass balance weights" 1094
(shown in phantom) can be incorporated into the lower section of
the signal assembly to resist wind induced lift by lowering the
center of gravity. By increasing the weight toward the bottom of
the signal and away front the point of securement 1030, 1025 the
lateral force (wind) required for rotation is increased, therefore
creating a beneficial resilience.
[0252] FIG. 51 shows a cross-sectional view taken along cross
sectional plane 51 of FIG. 49 of an embodiment of the single unit
signal and terminal housing 10126 and it's mating single unit door
and backplate 10124. The single unit door and backplate can be
utilized to hold the LED display modules 10100 in a fixed and
appropriate position relative to the flow of traffic and vehicle
movement. Also depicted is the hanger receivement tube 1057 which
is integral to the single unit signal and terminal housing 10126
used in the securement of the single unit signal and terminal
housing 10126 to the continuous hanger 1016 as previously described
and to be more fully described with respect to FIG. 54 and FIG. 55.
The rotational prevention serrations 1074 are shown in phantom as a
point of reference and are generally located on the housing's
exterior top and bottom, and in some horizontal embodiments, on the
housing's ends. The compression operable connection of the two
housings, the single unit door and backplate 10124 and the single
unit signal housing, terminal housing, and backplate 10126, is
provided by mating both bosses 1076, one with a pin and the other
with an aperture to receive a pin. The pin is designed to allow for
removal by lifting when the door 1094 is open and to prevent upper
movement by the housing's 10126 upper portion when it is closed and
secured with door latches 1096. This can provide weatherability for
the electrical connections contained within the single unit
housing.
[0253] FIG. 52 and FIG. 53 (depicting a vertical exploded and
enlarged view, respectively), each show elevations of an embodiment
of the continuous hanger 1016. In this embodiment, the lower
connection device 1084 can be of any known type or quantity
utilized in "hanging" signalization from single, dual, or three
span wire installations. The installation and securement of housing
to hanger 1016 is initiated by utilizing the aforementioned lower
connecting device's 1084 protruding embedded stud 1087 by inserting
into and through aperture 1053 in housing roof 1080. The secondary
securement plate 1095 is placed over the stud 1087 adjacent to the
housing interior roof 1080 portion and secured to the housing 10126
and the lower connection device's 1084 embedded stud 1087 by
utilizing the serrated washer 1075 and tightening the jamb nut 1037
as appropriate. The hanger's 1016 solid round tubular portion 1056,
which can be threaded, is then mated to the lower connection device
1084 stud 1087 utilizing serrated washer 1075.
[0254] In another embodiment, a "thread locker" such as
"LOC-TITE".TM. red or blue is used before tightening to the hanger
1016 and tubular portion 1056 threaded portions utilizing the
wrench receivement slot 1045 as appropriate. The rear housing 10126
(not shown) installation is completed by placing serrations 1074 of
the signal housing support shoe 1085 to mate with the housing's
serrations (also 1074) through shoe's 1085 aperture 1053 and
securing as appropriate using fasteners 1036.
Example 15
[0255] FIG. 54, FIG. 55, and FIG. 56 illustrate another embodiment
of the invention wherein the continuous load path hanger system now
utilizes a continuous peripheral load path, to support a housing,
and/or door and backplate assembly, also as previously
described.
[0256] FIG. 54 and FIG. 55 show a front elevation and a side view,
respectively, of the invention with attachments to a single span
wire 1130 and comprising the continuous load path hanger 1116 that
is mechanically connected to the existing span wire 1130 utilizing
the clamp assembly 1131. The continuous load path hanger 1116 is
shown in phantom surrounding the traffic control signal 1120.
[0257] The rectangular peripheral continuous load path hanger 1116
can provide additional load-dissipating support to the traffic
control device 1120. In an embodiment, the traffic control signal's
rear single unit signal and terminal housing 11126 is supported and
captured between the hanger's 1116 vertical support flanges 1129,
cradle base 1142, and transverse support 1146. The hanger 1116 is
mechanically connected to the housing 11126 with suitable fasteners
(not shown). The drawing also reveals the traffic control signal's
single unit door and integral backplate 11124 utilized to secure
LED lighting modules 11100. The traffic signal's visors 1134 are
also shown for reference. In another embodiment, the continuous
load path hanger 1116 is connected to housing 11124 front portion
1193 and then housing 11126 rear portion 1192 performs as the door
to provide access as required.
[0258] FIG. 55 illustrates a side view of the present invention
showing the continuous load path hanger 1116 secured to the traffic
signal's rear single unit housing 11126 and span wire 1130 using
span wire clamp 1131. The traffic signal's door and optional
integral backplate 11124 is shown installed over the gasketed joint
1168 utilizing hinges 1197 and door latches (not shown). As a point
of reference, the signals visors 1134 and backplate 11106 are
shown. Other suitable means to secure housings 11124, 11126
together include through bolting, added overlay flanges, or any
other appropriate fasteners 1136. Means of attachment to the hanger
can be provided by fasteners 1136.
[0259] FIG. 56 shows a front view of the hanger 1116, ready for the
electrical housing rear portion 1192 (not shown) installation, or
in some embodiments, the electrical housing front portion 1193
installation, also not shown. The hanger 1116 is sometimes
rectangular and can be connected to an existing span wire in two
locations. The traffic control device of this embodiment will be
vertical. Hanger 1116 comprises vertical support flanges 1129, a
bottom support cradle base 1142, and the transverse support beam
1146. The traffic control signal (not shown) can be secured to the
hanger 1116 utilizing the fastening apertures 1153. In some
embodiments, the hanger 1116 may utilize a single point of
connection to a single span wire and in other instances it may be
preferable to attach to dual span wire systems as shown and/or
referred to in FIG. 1, FIG. 9, FIG. 16, and FIG. 42.
[0260] FIG. 57 shows a back/interior isometric view of the door and
backplate 11124. The electrical housing front portion 1193
comprises walls 1182, floor 1178, roof 1180, support beams 1146,
and can also include an integral backplate 11106. The apertures
11101 are for installation of the LED light modules (not shown).
Apertures 1153 utilize hanger mating apertures for attachment.
[0261] FIG. 58 shows an isometric exterior/rear view of the single
unit housing 11126 that comprises a roof 1180, walls 1182, and
floor 1178. The electrical housing rear portion 1192 can be
reinforced using the transverse support beams 1146 and vertical
flange 1151. Access for the grommetted wire access is provided with
apertures 1152. In some embodiments, additional apertures 1153 are
required at the roof 1180 and floor 1178 for hanger securement.
[0262] FIG. 57 and FIG. 58 illustrate a single housing unit that
can include housing floors 1178, walls 1182, roofs 1180, and
support beams 1146 that are designed to mate to one another
creating a secure, weather-tight traffic signal housing assembly to
be utilized as a traffic control device as previously described in
other embodiments.
Example 16
[0263] FIG. 59 shows an embodiment of the invention which can
include a single unit housing 11126 as previously described with
respect to FIG. 46. Also depicted is the hanger system adapted to a
dual wire system as previously described with respect to FIG. 42.
FIG. 59 depicts the internal central support configuration of a
continuous load path hanger 1116 in a horizontal application. In
some embodiments, it may be preferred to utilize the external,
peripheral continuous load path hanger in a horizontal application,
in which it can border the housing's 11126 exterior. In some
embodiments, an integral backplate can be utilized as previously
shown and described in FIG. 48, FIG. 49, FIG. 50, FIG. 54, FIG. 55,
FIG. 57, and to be further described in FIG. 61.
Example 17
[0264] FIG. 60 illustrates yet another embodiment of the continuous
hanger system 1116. As previously shown and described in FIG. 28,
FIG. 29, FIG. 30, FIG. 31, FIG. 42, FIG. 53 FIG. 54, FIG. 55, and
FIG. 56. In this embodiment, the hanger system is adapted to a dual
span wire support system as previously described. The hanger's
lower device 1184 is connectable to the support frame 1149 and
housing's roof 1180 (shown in part for reference) mechanically
secured together using embedded stud 1187 and fasteners 1136. The
traffic control device is secured to the hanger frame 1149
utilizing appropriate fasteners through apertures 1153.
Example 18
[0265] FIG. 61 shows an isometric view of the single unit housing
11128 comprising a traffic signal housing 1118, roof 1180, walls
1182, and floor 1178. Additional support can incorporate transverse
beams 1146 and/or a vertical flange 1151. Apertures 1153, sometimes
mating, provide access for fasteners to attach traffic signal
housing 1118 to the hanger system (not shown). The integral
backplate 11106 completes this embodiment of a basic element of the
single unit signal and terminal housing and backplate 11128. Access
for electrical components and securement of LED modules is
provided. Front access for electrical components and securement of
lighting modules can be provided as previously described and shown
in FIG. 14, FIG. 23, FIG. 28, FIG. 29, FIG. 30, FIG. 32, FIG. 33,
FIG. 34, FIG. 37, FIG. 38, FIG. 40, and FIG. 48.
Example 19
[0266] FIG. 62 shows an isometric view of the single unit housing
as previously described in FIG. 61, except that the support beams
are now internal to the single unit housing, and a secondary
support and securement plate 1195 is also shown, which can be
utilized in some embodiments of the invention.
[0267] FIG. 63 shows a front view of the single unit signal and
terminal housing and backplate 11128. The support flanges 1146 now
internal are shown adjacent to the rear portion 1192 of the
housing's walls 1182. Attachment and support for the backplate
11106 is provided by connection flange 1177 (shown in phantom) that
is adjacent to the housing's 1118 walls 1182 and floor 1178. The
housing's roof 1180 is shown without the support plate 1195.
Apertures for securement and wire access 1152, 1153 are also
shown.
[0268] FIG. 64 shows a cross sectional view of the housing 1118,
transverse support beams 1146 and the traffic signal backplates
11106, taken across cross sectional plane 64 of FIG. 62. The
support flanges 1146 and backplate 11106 can be integral to the
manufacturing process as part of a single mold, but it can also be
part of the manufacturing process to produce the backplate 11106 or
support beams 1146 separately and incorporate it by any suitable
means such as ultrasonic welding and/or solvent welding glues, or
any other means to achieve the proper connection strength. Also
shown is the attachment/connection flange 1177. When it is
preferred to attach the backplate 11106 post forming, then in those
embodiments flange 1177 portion (shown in phantom) can be enlarged
to provide a larger attachment surface, and is integral to the
housing 1118.
[0269] FIG. 65 shows a front view of the door 1194. The door 1194
provides a means to display and secure the traffic control device's
LED modules and also provides weather-proof access to the housing
(not shown) by incorporating one or more gasketed joints as
previously described. The hinges 1197 can be attached to the door
and housing utilizing any proper means such as welding, gluing, or
even mechanical fasteners, such as by machine screws into threaded
inserts, or as part of the manufacturing process including
injection molding. The door's operational securement latches 1196
can be secured by placing "thumb bolts" through the apertures 1153
and into threaded inserts (not shown). Apertures 11101 for the LED
modules are shown along with the traffic signal visors 1134.
[0270] FIG. 66 illustrates a cross sectional view taken along cross
sectional plane 66 of FIG. 65. The door 1194, when not providing
access to the signal housing (not shown), can be attached by
inserting the thumb bolt 1154 through the flange 1196 and into the
housing's threaded boss (not shown). The thumb bolt 1154 is then
tightened over the gasketed joint (also not shown, but is described
and shown in future figures.) Hinge 1197 can be welded or
mechanically fastened to the door 1194 and is shown for
reference.
[0271] Traffic signal visors can be very susceptible to wind
damage. An embodiment of the invention can provide a means of
attachment using fasteners 1136 that utilize a strong sheer type
connection through the visor 1134 wall aperture 1153 without
relying on small-weak attachment tabs. The fasteners 1136 are used
to secure the visor 1134 by tightening into the doors 1194 threaded
bosses 1144.
[0272] FIG. 67 illustrates the terminal's removable front cover
portion 1150 that provides access to the traffic control device's
primary connections between the LED modules and the main conductors
from the controller. The front cover 1150 is on the same surface
plane as the backplate, thereby allowing for an uninterrupted
backplate and/or border applicable to span wire signalization;
particularly advantageous to wind loading. The support flange 1166
also provides a weather-proofing edge along the top and sides as
applicable to the plane of the door and backplate. Apertures for
attachment to the housing's threaded boss (not shown) are also
provided for appropriate fasteners, which preferably are flat head
countersunk machine screws.
[0273] FIG. 68 shows a sectional view taken along cross-sectional
plane 68 of FIG. 67 of the cover 1150 and support flange 1166
beyond (dash lines).
[0274] FIG. 69 illustrates a top view of the secondary securement
plate 1195. The secondary securement plate 1195, in some
embodiments, can be required to reinforce the housing's roof to
accept a serrated boss type flange. The secondary securement plate
1195 can be incorporated into the forming process, but can require
separate fabrication. The attachment can then be performed as
previously described as part of the manufacturing process. The
receivement slot 1170 creates a shelf to allow a fixed positioned
serrated boss to be positioned over the aperture 1153 to accept the
hanger hardware as previously described.
[0275] FIG. 70 shows a side view of the secondary securement plate
1195 including the receivement shelf 1170 and aperture 1153.
Example 20
[0276] FIG. 71 illustrates another embodiment of the single unit
housing and integral backplate 12130 adapted to a conventional mast
arm bracket 1227 and including a central load path support
structure.
[0277] FIG. 72 illustrates a rear isometric view of the single unit
housing and backplate 12130.
[0278] A means for attachment to rigid mounting brackets is
provided by apertures 1253 and serrations 1274 to accommodate
conventional span wire and mast arm bracket fasteners such as a
tri-stud and pipe-type connections.
[0279] FIG. 73 shows a frontal view of the single unit signal
housing and backplate 12130 without the door for clarity. The
attachment serrations 1274 (shown in phantom) and apertures 1253
are adaptable to receive conventional hangers such as span wire,
pole, and mast arm mounting brackets. In some embodiments, it may
be preferable to add or incorporate into the manufacturing process
securement plates 1295 for increased rigidity. The housing's
support beams 1246 are shown adjacent to the housing's walls
1282.
[0280] FIG. 74 shows a sectional view taken along cross sectional
plane 74 of FIG. 72 showing transverse support beam 1246. In this
embodiment the housing's 12130 rear wall 1282 is continuous and can
include additional support flange 1229.
Example 21
[0281] FIG. 75 illustrates a side elevation view according to a
still further embodiment of the continuous load path hanger 1316
with the single unit signal housing and backplate 13130. The
hanger's 1316 support flange 1333 is mechanically connected to the
mast arm clamp 1322. The hanger 1316 is mutual and adaptable to the
traffic signal housing portion 1318 by utilizing the housing's
support channel attachment flange 1351 that is shown in greater
detail in FIG. 82, FIG. 83 and FIG. 84. The hanger 1316 and support
channel 1351 have apertures 1353 that are aligned to accept through
fasteners 1336 and opposing bolts 13121 through washers 1339 into
threaded apertures 1344.
[0282] In some embodiments, washers 1339 can be elongated or
rectangular. Washers 1339 having an increased thickness can add
more reinforced surface pressures. The weatherproof electrical
conduit 1337, and the grommetted wire access 1358, provide access
for the traffic control device's electrical conductors.
[0283] FIG. 75a is a larger "bubbled" portion as depicted in FIG.
75. The mast arm clamp 1322 is mechanically connected to the mast
arm 1321 utilizing a conventional cable strap 1323. In another
embodiment, a flat band can be utilized. The conventional cable
1323 wraps around the arm 1321 and is inserted into the saddle
flange 1324 apertures. The conventional cable 1323 is then
tightened with fasteners 1336 to secure the saddle flanges 1324
serrated cradle base 1342 to the mast arm 1321 at the desired axis.
The desired axis can be perpendicular to the street or roadway
below. In FIG. 76, the arcuate slots 1328, support flanges 1331,
serrations 1374 and reinforcement gussets 1330 are shown for
reference.
[0284] FIG. 76 shows an isometric exploded view of an embodiment of
the invention providing a means of adjustment for skewed and off
angled intersection arrangements as previously described in FIG. 75
and FIG. 75a. The mast arm clamp 1322 can be installed as
previously described at a perpendicular angle such that the traffic
traveling below can view the traffic control signal appropriately.
The components of the traffic control signal, according to an
embodiment of the invention, are adjustable and sometimes require
adjustment as appropriate. The center support flange 1331 is shown
along with the top portion of the reinforcement gusset 1330
apertures. The center support flange 1331 vertical apertures 1353
can be utilized for securement over the serrations 1374 for lateral
adjustments. Flange 1331 horizontal apertures 1353 are utilized for
rotational attachment to claim 1322. The hanger 1316 is shown with
its integral support flange 1333 along with apertures 1353 for
securement of flanges to each other and attachment of the one-piece
signal housing (not shown).
[0285] FIG. 77 shows an isometric view of the center connection
flange 1331 attached to the previously installed mast arm clamp
1322. The support flange 1331 is placed over the saddle flanges
1324 and the arcuate slots 1328 and secured by placing fasteners
(not shown in the FIG. 77) through the apertures 1353, after proper
vertical positioning that is appropriate to the roadway below.
[0286] FIG. 78 illustrates an isometric view of the assembled
components shown in the exploded view of FIG. 75. The hanger 1316
traffic signal support flange 1348 with integral support flange
1333 is attached to the center support flange 1331. The center
support flange 1331 is mechanically connected to the mast arm clamp
1322. The mast arm clamp is also mechanically connected to a
protruding mast arm 1321 as previously described.
Example 22
[0287] FIG. 79 shows an isometric exploded view according to yet
another embodiment of the invention and comprises the mast arm
clamp 1422 and hanger 1416. This embodiment is appropriate for 90
degree intersections where horizontal aiming and/or adjustments of
the traffic control device is not required.
[0288] FIG. 80 illustrates the assembled portion of the clamp 1422
and hanger 1416.
[0289] FIG. 81 illustrates an embodiment of the invention including
the hanger 1416 with its integral support flange 1433 positioned to
allow vertical height adjustments in a range of 25% to 75%. This
hanger-traffic signals support flange 1448 can be utilized when the
road clearance is greater than or less than the standard center
mount procedure. For example, if additional height is required, the
hanger 1416 can be utilized as shown. Conversely, if a lower
installation is desired, the hanger can be inverted.
[0290] FIG. 82 illustrates an isometric view of a single piece
traffic signal housing and backplate 14130. The housing's support
channel attachment flange(s) 1451 is shown with apertures 1453 for
attachment to a mutual hanger (not shown), for example, such as
previously described and shown in FIG. 79. The connection flange
1477 is integral to the housing 1418 and can be utilized to support
the backplate 14106. The backplate 14106 can also be attached to
the connection flange 1477 as part of the manufacturing process.
The manufacturing process can affix the backplate 14106 to the
connection flange 1477 through methods that include but are not
limited to thermoforming, gluing, or ultrasonic welding.
[0291] FIG. 83 shows a cross sectional view taken along cross
sectional plane 83 of FIG. 82 and illustrates the traffic signal
housing 1418 attached to a continuous hanger 1416, as previously
described. The traffic signal support flange 1448 is inserted into
the housing's support channel attachment flange 1451 and fastened
with through fasteners 1436 and placing opposing bolt 14121 over
the washer 1439, also previously described. The backplate 14106
connection flange 1477 is shown with extensions (shown in phantom)
for additional reinforcement or attachment surface area if
required. The gasketed joint 1468 can be used to weatherproof the
connection of the door (not shown but previously described) to the
housing 1418.
[0292] FIG. 84 shows a front view of the novel signal housing 1418
(door omitted) which can include the integral backplate 14106. In
some instances it may be advantageous not to have the backplate
integrated into the signal housing 1418 as a single unit and
therefore optionally can be deleted from the manufacturing process.
The housing's 1418 integral support beams 1446 are shown utilized
to transverse some of the wind imparted loading. The grommetted
wire access 1458 is shown for electrical wiring 1438 connected to
the terminal block 1440.
Example 23
[0293] FIG. 85 illustrates a side view of an additional embodiment
of the invention and reveals an alternative means for vertical
rotational adjustments. The traffic control signal 1520 can
comprise the hanger 1516, the single unit housing and backplate
15130. This embodiment of the invention is generally directed to
the center support flange 1531 and the saddle flange 1524. All
other aspects are as previously described in Example 22.
[0294] FIG. 85a illustrates a larger bubble portion of FIG. 85 for
reference. This embodiment is primarily directed to the mating
serrations 1574 and comprises a means of connecting the mast arm
clamp 1522 to the center support flange 1531 which is connected to
the hanger support flange 1533. This assembly is more fully
described and shown in FIG. 86, FIG. 87, FIG. 88, and FIG. 89.
[0295] FIG. 86 shows an isometric view of the saddle flange 1524
attached to an existing mast arm 1521.
[0296] FIG. 87 shows a side view of the saddle flange 1524
revealing the tooth-like projections of the cradle base 1542 that
secure the saddle flange 1524 in a fixed rotational position after
tightening attachment cables (not shown) as previously described.
The saddle flange's alignment slot 1527 can receive the center
flange's (1531 of FIG. 89) alignment protrusion (1526 of FIG. 89).
Rotational adjustment and securement can be provided by mating the
saddle flange 1524 serrations 1574 with the mutual serrations 1574
after proper alignment is achieved with center flange (1531 of FIG.
89).
[0297] FIG. 88 shows a front view of the previously described
saddle flange 1524 of FIG. 85, FIG. 86, and FIG. 87. The cradle
base 1542 is shown in phantom for reference.
[0298] FIG. 89 illustrates a portional exploded side view of the
center flange 1531 and the hanger's 1516 support flange 1533. The
flange 1531 embedded stud 1535 can be utilized for securement of
the flange 1531 to the saddle clamp 1524 as previously described. A
bolt 15121 and washer 1539 can also be utilized by placing the bolt
15121 through the apertures 1553 and securing it with the washer
1539 and stay nut 15120 as shown in FIG. 86, FIG. 87, and FIG. 88.
The adjustable attachment of the center flange 1531 to the hanger
flange 1533 begins by placing the hanger flange's alignment
protrusion 1526 into the center flange alignment slot 1527. After
determining the proper rotation alignment, the mutual serrations
and mating serrations 1574 are brought together and secured to each
other by placing a bolt 15121 through washers 1539 and the
apertures 1553. The assembly is tightened as appropriate using a
stay nut 15120.
Example 24
[0299] FIG. 90 illustrates the single housing unit and integral
backplate 16130 according to a still further embodiment of the
invention adapted to a conventional mast arm bracket 1625.
[0300] FIG. 91 illustrates a rear isometric view of the single unit
housing and backplate 16130. A means for attachment to rigid type
mounting brackets is provided by apertures 1653 and serrations 1674
to accommodate conventional span wire and mast arm bracket
fasteners. Conventional span wire and mast arm bracket fasteners
include, but are not limited to, tri-stud and pipe type connections
utilizing conventional arms on the top and bottom or each end of a
traffic control device, as appropriate.
[0301] FIG. 92 shows a front view of an embodiment of the invention
16130 without the door for clarity. The attachment serrations 1674
and apertures 1653 are adaptable to receive conventional hangers
such as span wire, poles and mast arm mounting brackets. In some
embodiments, it may be preferred to add or incorporate securement
plates 1695 into the manufacturing process for increased rigidity.
The housing's support beams 1646 are shown adjacent to the housings
walls 1682.
[0302] FIG. 93 illustrates a sectional view taken along cross
sectional plane 93 of FIG. 91 as previously described, however, in
this embodiment, the housing's rear wall 1682 is continuous and can
include an additional support flange 1629.
Example 25
[0303] FIG. 94 represents a front view of another embodiment of the
span wire saddle clamp and hanger device 1731. This device provides
a rigid surface connection area increase of over 10 times greater
than conventional span wire clamps and helps reduce potentially
harmful orbital movement of the traffic signal by eliminating the
commonly used below-the-span-wire clevis pin connection and
providing an increased lateral connection to the span wire.
[0304] The span wire clamp 1731 top and bottom saddle flanges 1741
are continuous across the entire span wire 1730. Conventional span
wire clamps can only apply direct pressure at the fasteners.
Conventional span wire clamps can also require a second device that
is attached pivotally to the signal which can require connecting to
the span wire clamp by a clevis attachment. In an embodiment of the
invention, the span wire clamp is provided to reduce opportunities
for structural failure, minimize harmful movement that can be
susceptible to wind, reduce the number of parts required, and
reduce the amount of labor costs for installation.
[0305] The clamp 1731 as shown is adaptable to not only single span
wire support systems, but also to a two span wire support system.
Installation on a two span wire support system can be achieved by
the attachment of a cable hanger (not shown) suspended from a
second spay wire above, to the clamp's center support flange 1771
by inserting the cable hanger (not shown) through the drop cable
aperture 1791 with the appropriate thimble and fasteners. The lower
connection device 1784 can be attached to any suitable traffic
control device (not shown) preferably by utilizing an embedded stud
1787. The top and bottom saddle flanges 1741 are placed adjacent to
the span wire 1730, which fits into grooves (1735 shown in FIG.
95). The saddle flanges 1741 are then connected by placing the
u-bolts 1739 into the cradle bases 1742 through the apertures and
then fastening the u-bolts 1739 using washers 17121 and stay nuts
17120. The serrations 1774 and the integral reinforcement 1759 are
also shown as a point of reference.
[0306] FIG. 95 shows a side angled perspective view of the clamp
device 1731 as previously described. The clamp 1731 alignment
protrusions 1764 can provide a positioning means for connecting the
top and bottom saddle flanges 1741, bringing the cable receivement
grooves 1735 into aligned contact with span wire 1730. The top and
bottom saddle flanges 1741 and the cable receivement grooves can be
fastened together to provide a secure attachment of the device 1784
to the span wire 1730.
[0307] FIG. 96 shows an exploded view of the previously described
clamp 1731 for reference.
Example 26
[0308] FIG. 97 illustrates a front view according to another
embodiment of the hanger system's lower connection device 1884
which is adaptable to a conventional flat, rigid hanger system
common to a two span wire support system. Apertures 1853 for
attachment to a span wire and an upper hanger extension and cable
groove 1835 are shown for reference and accept appropriate
fasteners as described and shown in previous embodiments. FIG. 98
shows a side view of the lower device 1884 as described in FIG.
97.
Example 27
[0309] FIG. 99 illustrates an isometric view according to another
embodiment of the hanger system's lower connection device 1984
which is adaptable to a conventional pipe hanger system, and can be
utilized in one and two span wire support systems. The device 1984
has an embedded stud 1987 used to attach a traffic control signal
as described in previous embodiments. The lower portion of the
device 1984 can be male and is used for connecting a conventional
pipe hanger support system.
[0310] FIG. 100 shows a front view of the previously described
embodiment of FIG. 99.
Example 28
[0311] FIG. 101 illustrates a front view according to yet another
embodiment of the central hanger system 2016 utilizing a threaded
rod adapted to a conventional terminal housing 2079 and
conventional traffic signal housing 2081 with intermittent
connections. This embodiment provides a means to adapt the
continuous central load path hanger support system 2016 to existing
conventional terminal housings 2079 and conventional traffic signal
housings 2081. The lower connection device 2084 is attached to
terminal housing 2079 utilizing embedded stud 2087 and support
plate 2066 as described in previous similar embodiments. The
continuous hanger 2016, as depicted is a threaded rod, and is
connected to the embedded stud 2087 utilizing connection coupling
2099. The threaded rod runs continuously through the conventional
terminal housing 2079 and conventional traffic signal housing 2081
and provides intermittent connections at each housing juncture and
at the bottommost housing floor 2078.
[0312] FIG. 101a illustrates an enlarged bubble portion of FIG. 100
showing the connection of the housings by inserting the threaded
rod through the housing apertures 2053 and fastening the housing's
floor 2078 to an adjacent housing's roof 2080 with support plates
2066, washers 20121 and stay nuts 20120, thereby providing a secure
compression-type connection.
[0313] FIG. 102 shows a front view of an embodiment of the
invention as just described, however, the threaded rod 2016 is also
continuous, and has no intermittent connections.
[0314] FIG. 102a shows an enlarged bubble portion wherein the
conventional housing floor 2078 and the conventional housing roof
2080 are connected together with the conventional fasteners 2036
placed through an aperture 2053. The treaded rod runs continuously
through the conventional housings to the bottom connections as
previously described.
[0315] FIG. 103, FIG. 103a, FIG. 104 and FIG. 104a are front views
according to an additional embodiment of the continuous central
load path hanger system utilizing a flexible steel cable/hanger
2116 (rather than a threaded rod) adapted to conventional housings
as just described with respect to FIG. 101, FIG. 101a, FIG. 102 and
FIG. 102a.
Example 29
[0316] FIG. 105 shows a front view according to a still further
embodiment of the invention utilizing a pivotal hanger support
device as previously described, attached to two span wires 2230
above the traffic signal. The lower connection device 2284 is
connected to a span wire 2230 as previously described. The lower
connection device 2284 is also connected to the single unit signal
and terminal housing 22128 utilizing the continuous load path
hanger 2216 (in phantom). The traffic control device's electrical
terminal cover 2250, door 2294, door hinges 2297, door latches
2296, visors 2234, LED modules 22100 and integral backplate 22106
with reflective tape 22110 are all shown for reference.
[0317] The installation of the present invention as shown depicts
the central hanger 2216 top portion connected to the upper span
wire 2230 and the hanger's lower portion connected to the lower
span wire, also 2230. In some applications, subject to pole
strength, it may be preferable in having the traffic signal secured
between the two span wires. The installation of the hanger to the
span wires as described distributes the load evenly and also
reduces "galloping" common to all span wire installations.
Conventional prior art systems commonly would break or pull apart
due to multiple connections between the span wires that were only
designed to resist gravitational loading and not harmful dynamic
wind forces that create shock loads during vertical movements such
as galloping. The central load path hanger 2216 overcomes the prior
art failures by providing a means to eliminate or greatly reduce
the dynamic loads by creating an equal load distribution system,
throughout the traffic control device signal.
Example 30
[0318] FIG. 106 is a front view of an embodiment of the invention
2215 utilizing the conventional common rigid flat hanger system as
described and shown in FIG. 97 and FIG. 98.
Example 31
[0319] FIG. 107 shows a front view of an embodiment of the
invention 2215 wherein a common rigid pipe hanger system is used
along with the lower connecting device 2284 as described and shown
in FIG. 99 and FIG. 100. The pipe hanger 2222, after determining
the proper length, is male threaded at each end and then mated to
and between female threaded hubs 2243 which are connected to the
span wires 2230 by the saddle clamp 2231 and tether clamp 2225 with
the appropriate fasteners. The lower device 2284 is connected to
the central hanger 2216 and housing 22128 as previously
described.
Example 32
[0320] FIG. 108 shows a front view according to another embodiment
of the invention wherein a conventional cable drop hanger system
2322 is used to support the continuous central load path hanger
2316, the single unit signal housing and backplate 23130.
Example 33
[0321] FIG. 109 shows a front view according to yet another
embodiment wherein a conventional cable drop hanger 2422 is
connected to the span wire clamp 1731 as described and shown in
FIG. 94 to support the invention while attached to two span wires
2430 above the traffic signal.
Example 34
[0322] FIG. 110 shows a front view according to still another
embodiment utilizing the span wire clamp 1731 as described in FIG.
94 to support the invention 2515 while attached to a single span
wire above the traffic signal.
Example 35
[0323] FIG. 111 shows a front view of the invention utilizing a
conventional span wire clamp assembly 2523 attached to a single
span wire 2530.
Example 36
[0324] FIG. 112 shows a front view utilizing the invention's span
wire clamp 1731 supporting the traffic signal, and a second tether
wire 2530 attached below the traffic signal at tether clamp
assembly 2525.
Example 37
[0325] FIG. 113-FIG. 118 illustrate a further embodiment of the
single unit traffic signal comprising a combined signal and
terminal housing 26128 with an integral backplate. This embodiment
can utilize the central continuous hanger system as previously
described and can sometimes be specific to the hanger systems
previously described and shown in FIG. 49-FIG. 53. This embodiment
of the invention can also be suitable to the external hanger
support system as previously described and shown in FIG. 54, FIG.
55, FIG. 56, FIG. 59, and FIG. 60.
[0326] FIG. 113 shows an isometric view of the traffic signal
housing 2618 and terminal housing 2617 portion that is adaptable to
a central continuous load path hanger support system. The side
walls 2682 of the housings 2617/2618 portion are connectable to the
cover 2650 (of FIG. 114) and are also adaptable to an external
peripheral continuous load path hanger system (as has been
previously described). In an embodiment of the invention, a
preferred hanger system is the internal central load path system
using apertures 2653 extending through the approximate center of
the single housing unit such that a continuous hanger system can be
inserted within for support. The hanger mating serrations 2674 can
provide the signal with fixed rotational movement by securing the
span wire clamp, the lower connection device or any other component
to the serrations 2674. The floor 2678 and roof 2680 of the single
unit signal and terminal housing 2617/2618 portion are shown for
reference. A second aperture 2652 can provide access for the main
electric conductors.
[0327] FIG. 114 illustrates an isometric view of the front cover
2650. The front cover 2650 can be comprise an integral backplate
26106 (shown from back side and in FIG. 115), a door receivement
frame 2670 to provide flush mounting of the door and gasketing (not
shown) as previously described. The floor 2678, roof 2680, and
walls 2682 of the front cover 2650 are appropriately sized such
that the front cover 2650 can be placed over the floor 2678, roof
2680 and walls 2682 of the single unit signal and terminal housings
portion 2617/2618 backplate (shown in FIG. 113). The front cover
2650 can be mechanically secured to signal and terminal housing
2617/2618 to result in the single unit signal and terminal housing
with backplate 26128 by aligning apertures 2653 and using fasteners
2636 as shown in FIG. 115 and FIG. 118.
[0328] FIG. 115 shows a front view of the single unit signal and
terminal housing with backplate 26128 (without the door for
clarity) wherein the signal and terminal housing 2617/2618, as
described previously in regards to FIG. 113, is mated and connected
with the front cover 2650 to form a single unit, as described
previously in regards to FIG. 114. The support members 2646, roof
2680 and floor 2678 of the single unit signal and terminal housing
with backplate 26128 are shown. Some embodiments of the invention
can provide access for the central hanger in apertures 2653 aligned
through the supports 2646, roof 2680 and floor 2678. Electrical
access is provided through specified weatherproof apertures 2652
through which electrical wires can be run. The fasteners 2636 can
also be used to connect an external hanger system as previously
described with respect to FIG. 54-FIG. 60.
[0329] FIG. 116 illustrates a cross sectional view taken along
cross sectional plane 116 of FIG. 113. The transverse support beam
2646 is adjacent to the housing walls 2682 and can be secured by
any appropriate means. For example, the traverse support beam 2646
can be secured during the forming process or the traverse support
2646 can be attached with the proper adhesives or weld
applications. An aligned aperture 2653 is contained within the
traverse support beam 2646 that can provide, in some embodiments,
access for the central hanger system. Electrical wiring access is
provided by aperture 2652.
[0330] FIG. 117 shows a cross sectional view taken along cross
sectional plane 117 of FIG. 114. The single unit signal and
terminal housing portion 2617/2618 and the front cover 2650 as
shown can be attached to one another with fasteners 2636. The
inside face of the support flange 2666 can be placed over the
outside face of the housing's rear portion wall 2682. For
reference, the housing's backplate 26106 and door receivement
recess 2670 and aperture 26101 for the LED modules are also
shown.
[0331] FIG. 118 illustrates another cross sectional view taken
along cross sectional plane 118 of FIG. 115 showing the housing
26128 mated to the front cover 2650 using fasteners 2636 as
previously described.
Example 38
[0332] Additional embodiments as shown in FIGS. 119-121 utilize
lateral supports integral to the hanger as an alternative to the
lateral support beams integral to the housing, such as previously
described in FIGS. 41, 46, 57, 59, 61, 63, 64, 72, 83, 84, 92, 93,
115, 116, and 118.
[0333] Turning now to FIG. 119 representing an isometric view of
the an embodiment of the present invention's single unit signal and
terminal novel housing 27128 comprising channeled attachment
flanges 2751 utilized for support and connection to the central
load path hanger system 2716 shown and described in FIG. 120. The
channels 2751 are preferably located with one vertical central axis
and multiple 90-degree axis appendages providing lateral support to
resist torsional forces that occur during high wind events such as
hurricanes. Access for attachments is provided utilizing apertures
2753. For reference the housing 27128, floor 2778, wall 2782, and
backplate 2706 are shown along with electrical conductor access
provided by aperture 2752 and as previously described in earlier
embodiments.
[0334] FIG. 120 is also an isometric view of the present
invention's novel continuous load path hanger 2716 that is
adaptable to the housing 27128 in FIG. 119 and as shown installed
in FIG. 122. The hanger's vertical central support flange 2729
upper portion is adaptable and connectable to span wire attachment
devices as previously described and shown in FIGS. 105-112, and any
other suitable type span wire attachment device as appropriate. The
continuous hanger's vertical central support flange 2729 has
integral lateral supports 2747 extending perpendicular to the
longitudinal dimension of vertical central support flange 2729 that
provide lateral reinforcement to the housing in resisting torsional
forces created by wind gust. Later described attachments utilize
apertures 2753.
[0335] FIG. 121 depicts a side proportional view of the continuous
load path hanger 2716. For points of reference, the housing's roof
2780 and wall/side beyond 2772 are shown with span wire connection
device 2784 mechanically connected by hanger 2716 upper flanged
portion 2729 utilizing the embedded stud 2782 of span wire
connection device 2784 inserted through hanger support flange 2766
fastening access 2752 utilizing aperture 2753, with final
securement accomplished by tightening stay nut 27120 over washer
27121 as appropriate. Rotational adjustments and securements are
provided by mating serrations 2774 integral to connection device
2784 and integral to hanger support flange 2766.
[0336] FIG. 122 is a front view of the novel continuous central
load path hanger 2716 and single unit signal and terminal housing
27128 with door/cover omitted for clarity. The attachment of hanger
2716 and housing 27128 is begun by placing the housing's channeled
attachment flanges 2751 over hanger vertical central support flange
2729 and lateral supports 2747. Additional support is provided by
the placement of the bottom surface of flange 2766 against the
exterior surface of housing roof 2780. Hanger 2716 with previously
installed (as described in FIG. 121) span wire connection device is
secured to the housing 27128 utilizing appropriate fasteners
2736.
Example 39
[0337] FIG. 123 is a frontal view illustrating yet another
embodiment of the present invention continuous load path hanger and
housing. The traffic control device comprises 1) the continuous
central load path hanger system 2816 (shown in phantom) and 2) the
single unit signal and terminal housing and backplate 28128.
[0338] FIG. 124 is a front sectional drawing illustrating the
invention's continuous central load path hanger adapted to the
combined terminal and signal housings 2817 and 2818, respectively.
The installation begins utilizing the continuous hanger mid-portion
2856 that comprises an embedded stud 2887 at each end with
appropriate thread length protrusions. The mid-portion 2856 of
hanger 2816 may be of any suitable type, size, or material such as
cast aluminum, extruded metal, threaded rod, or even flexible cable
as desired and as previously described above with regard to other
embodiments. The hanger 2816 is inserted through the housing roof
2880 and transverse supports 2846 utilizing apertures 2853. Prior
to inserting hanger 2876 through the housing floor 2878, stay nut
2837 is threaded on until it meets the tubular portion 2856. Washer
28121 at this time is placed adjacent to nut 2837. The securement
plate 2895 is placed into the housing's recessed/receivement area
2870 after which the hanger mid-portion 2856 embedded stud 2887 is
placed over securement plate 2895 in housing floor recess 2870,
then through apertures in plate 2895 and housing floor recess
2870.
[0339] The installation continues by inserting the metal connection
flange 2877 with integral serrations 2874 and protrusions 2864 into
the housing's roof 2880 mating receivement apertures utilizing a
proper sealant such as silicone caulk. Sealant is again applied at
the flange's serrations 2874. A suitable type of span wire lower
connection device 2884 is attached by inserting the embedded stud
2887 into and through the previously installed flange 2877, housing
roof 2880 and secondary securement plate 2895. After proper
rotational alignment is determined, rotational movement is secured
by mating serrations of lower connection device 2884 to serrations
of flange 2877, then fastened as appropriate utilizing washer 28121
adjacent to plate 2895 and to coupler 28118, which is then
tightened to create compression type connection of the hanger 2816
upper portion to both the span wire lower connection device 2884
and housing 2817, 2818. Coupler 28118 is of an appropriate length
so that the embedded stud 2887 of the connection device 2884 is
totally secured at approximately half of the coupler's 28118
overall length.
[0340] The hanger's upper portion is now ready for receivement of
the hanger mid portion 2856 by threading the tubular mid-portion's
embedded stud 2887 into the previously installed coupler 28118 and
tightening as appropriate using the wrench receivement slot 2845.
The installation of the central load path hanger 2816 is completed
by threading the stay nut 2837 downward creating a snug type
pressure over washer 28121 and previously installed securement
plate 2895. The snugging as described can be used to adjust any
"plastic-creeping" if in some instances it is required. The support
shoe 2885 is adjacent to the housings floor 2878 and wall 2882 and
secured tightening the stay nut 28120 over washer 28121 as
appropriate creating a secure-compression type means of attachment.
Support shoe 2885 provides both vertical and lateral reinforcement
utilizing the housing's offset as a protrusion surface captured by
the shoe 2885 and by mechanically connecting to plate 2895 that is
also captured by the interior surface of housing floor recess 2870.
The integral support channel attachment flange 2860 in some
embodiments is molded in as part of the manufacturing process to
receive lateral transverse supports 2846.
[0341] FIG. 125 is an isometric view of the housing 28128 showing
housing floor area 2878, which in the present embodiment is offset
creating an exterior protrusion and interior housing floor recess
2870 utilized with the central hanger system to provide additional
lateral support. External protrusions of support channel attachment
flanges 2860 are shown as previously described in FIG. 124.
Example 40
[0342] FIG. 126 illustrates a front view of an embodiment of the
subject invention's novel photovoltaic (P.V.) solar collector cell
type traffic control signal 40110. The photovoltaic laminate (PVL)
40112 collector cells are secured to the signal's single unit
housing and integral backplate 40106 preferably utilizing an
appropriate adhesive as specified by the PVL system's manufacturer.
The electrical connections for the collected power are transferred
utilizing conductors routed through and into the traffic signal's
housing appropriate weatherproof means. Wiring is then connected
into appropriate circuitry.
[0343] Turning now to FIG. 127 representing an isometric rear view
of an embodiment of the subject invention utilizing the single unit
housing's back surface 40120, side wall 40118, and integral
backplate 40106 as a substratum for the PVL solar collector
40112.
[0344] FIG. 128 is a side view of an embodiment of the subject
invention utilizing the signal back 40120 and side 40118 portions
as substratum for the PVL collector as depicted in FIG. 127. In
addition, the visors 40116 are also utilized as surface areas for
PVL panels.
[0345] The subject invention is the first to provide embodiments
having a single unit housing with an integrated backplate, which
provides never before contemplated substratum for solar collector
cells used in providing electrical power to highway intersections.
The functional aspects of solar power as part of signalization are
to 1) prevent dangerous dark signal occurrences as a result of lost
electrical power, 2) reduce strain on the electrical power grid,
and 3) save money in utility cost. Embodiments of the subject
invention provide a means to increase a prorated demand for
additional photovoltaic cell surface areas.
[0346] Embodiments of the subject invention also provide
improvements over prior art solar energy systems utilized for
traffic control devices by increasing the surface area amount of
solar collector cells. As an example, "framed" type solar panels
are currently used in some highway lighting applications, but due
to mounting from a fixed pole or mast, they are very susceptible to
wind damage and therefore very limited in size and direction
aspects. Alternatively, wrapping the upper portion of support poles
with flexible P.V. panels may not have the same wind damage risk as
fixed solar panels, but the "pole wrapping" system is also
constrained to a limited surface area. Also, difference size and
shapes of poles make the amount and installation of flexible solar
films indeterminate and challenging. Embodiments of the subject
invention provide increased surface area for solar cells that is
not limited but increasable by demand. In other words, as the power
source demand is increased due to the amount of traffic signals,
the surface area of the added traffic signals can be used as
additional solar energy collectors to off-set or possible eliminate
the increased electrical demand.
[0347] The below table is based upon a typical box intersection
having one 4-lane highway crossing another 4-lane highway, each
having turn lane signalization as appropriate.
TABLE-US-00001 TABLE 1 Available P.V. cell substratum areas
AVAILABLE COMPONENT QUANTITY PER SURFACE AREA DESCRIPTION
INTERSECTION PER COMPONENT TOTALS Rigid/framed P.V. 4 12 s.f. per
48 s.f. panels attached to support poles Flexible/laminate 4 30
s.f. per 120 s.f. P.V. panels attached to upper portion of support
poles Laminate P.V. 12 20 s.f. per 240 s.f. panels secured to
traffic signals
Example 41
[0348] FIG. 129 represents a side view of a further embodiment of
the continuous load path hanger system that is external to the
single unit housing (shown in phantom). As will be readily
appreciated by those skilled in the art, this embodiment depicted
in FIG. 129 is a combination of a span wire connection device 2910
and continuous hanger system 2916 is for a single unit terminal and
signal housing; however, it could be readily adapted for use with a
single unit signal housing by use of a different span wire
connection device as exemplified elsewhere herein above.
[0349] FIG. 129 represents an expanded side view of a hanger,
similar to that in previously described FIG. 31, revealing a
continuous hanger system 2916. The present embodiment no longer
requires the removable hub as previously described, because this
embodiment as depicted is adapted for use with a single unit
terminal and signal housing. The previously shown and described
hanger support frame (549 of FIG. 31) is here extended and divided,
creating two vertical extensions 2949, 2949a mutually connectable
utilizing appropriate fasteners 2936 through elongated apertures
2952, allowing final vertical adjustments prior to securement.
Though adaptable to different span wire connection devices, the
present embodiment is currently exemplified utilizing a
pivotal-type hanger commonly used in dual span wire systems, also
as previously described.
[0350] The roof 2980 and floor 2978 of a traffic signal housing are
shown in part and in phantom as a point of reference. Fasteners
2936 are utilized through serrated portions 2974 to secure signal
assembly (as referenced) in proper alignment to the travel
direction as required.
[0351] The span wire hanger-connection device 2910 is shown and
installed as previously described in connection with FIG. 42 and
Example 9 herein above.
Example 42
[0352] FIG. 130 illustrates another embodiment of the present
invention with separate terminal and signal housings by depicting
the novel continuous load path hanger system external to the
terminal housing and also internal to the signal housing, which
provides an uninterrupted, circuitous central load path that is
distinctly separate from the terminal housing.
[0353] FIG. 130 reveals a side view of the present invention's
novel traffic control device 3020, which comprises a span wire
hanger-connection device 3010 and a central and continuous load
path hanger 3016. The continuous hanger system 3016 comprises a
hanger support frame 3049 and a round threaded tubular portion
3056. Hanger 3010 is mutually connectable to both upper and lower
span wires 2930 utilizing saddle clamp 3034 and span wire clamp
3025. The hanger's lower connection device 3084 is connectable to
the support frame 3049 upper portion whereas the lower portion of
support frame 2949 is mutually connectable to the round tubular
portion 3056 (and thereby ultimately connected to the support shoe)
of hanger 3016.
Example 43
[0354] FIGS. 131, 131a, 132, 133, and 134 illustrate yet another
embodiment of the present invention with a novel external central
support hanger system and a single unit terminal and signal housing
with integral backplate adaptable to the new hanger system. FIGS.
128a and 129 depict an embodiment of the novel hanger having the
ability to accept various different sized housings from different
manufacturers, as sometimes the required number of signal faces
varies such as in a 3-way as shown, a 1-way, or even a 4-way, as
desired. Single unit housings such as those depicted in FIGS. 46,
49, 50, 54, 55, 58, 59, 61-64, 72, and 105-118 can readily be
adapted for use with this type of external central support hanger
system.
[0355] FIG. 131 shows a side view of a version of this embodiment
of the novel traffic control device 3120. This embodiment is
identical to one previously described and depicted in FIGS. 32 and
33 except upper attachment flange 3166 and support shoe 3185 have
been slightly extended to allow more room in the single unit
housing 3118, and the hanger 3116 has been moved external to the
signal housing, similar to the concept embodied in versions
depicted in FIGS. 28-47, 54-56, 60, 120, and 121. This embodiment
as depicted in FIG. 131a accepts varying types of traffic signal
assemblies such as standard 3-section assemblies with or without
disconnect hangers or housings. In order for the hanger system 3116
to be adaptable to different types of signal assemblies 3120, the
hanger 3116 is simply made adjustable by an overlapping connection,
preferably having mating serrations secured together with
appropriate fasteners, as is more fully depicted in exploded view
in FIG. 129. In some regions where high winds are sometimes
prevalent it may be desirable to add support flanges 31147 to
strengthen the connection point of upper attachment flange 3166 and
support shoe 3185 to the hanger's 3116 vertical portions.
[0356] FIGS. 132, 133, and 134 are expanded and enlarged views of
the embodiment as previously described in connection with FIG.
131a.
Example 44
[0357] FIG. 135 depicts still another embodiment of the present
invention's novel span wire supported traffic control device 3220
comprising a continuous load path hanger 3216, a single unit signal
and terminal housing 32128 and a novel spring-type linking device
3210.
[0358] The following described embodiments of the present invention
provide a central and continuous load path hanger utilizing a
spring-type support to help distribute loading and associated
stresses due to wind dynamic loads and gravitational wind-induced
impact forces such as harmful shock load.
[0359] The preferred material, but not limited to same, for this
signal hanger assembly is cast aluminum, and weatherable material
such as stainless steel is preferred for the hanger's spring
component.
[0360] FIG. 135 is a side elevation. In this present embodiment,
for general understanding, the novel traffic control device 3220 is
shown installed utilizing a common dual span wire 3230 traffic
signal support system.
[0361] The central and continuous hanger device 3216 comprises an
upper connection device 3286 and a lower connection device 3284
mutually connected with "linking" device 3210.
[0362] The linking device 3210 comprises a spring 3212 that is
adaptable to the upper and lower connection devices 3286, 3284 by
any suitable means of attachment.
[0363] Starting at the top span wire 3230, a saddle clamp 3234 is
fastened securely to the span wire 3230 utilizing fasteners 3236. A
first extension hanger 3238 is mutually connected to clamp 3234
utilizing clevis pin 3289. Next, the upper connection device 3286
is placed in a desired vertical position and then is fastened to
the existing hanger 3238 utilizing appropriate fasteners 3236. The
lower portion of the upper connection device 3286 is mutually
connected to the spring assembly 3212 utilizing the embedded stud
3287 of upper connection device 3286. The receiving aperture in
flange 3213 is mutually connected to spring 3212 by any appropriate
means such as welding or a split-ring enfoldment arrangement, or in
some instances both. Spring 3212 can be any of various types of
extension springs such as a barrel type (shown), variable pitch,
constant pitch or even hourglass. The spring serves at least two
functions in preserving span wire traffic signals from breaking
apart during hurricanes. First, the spring will allow the signal
assembly to rotate in various positions determined by the wind
direction. The system is designed with a spring tensioning amount
that limits the rotation during non-high wind events, but is also
designed to yield at higher wind speeds to reduce wind related
damage by "shedding" the wind loads as it rotates. Another benefit
of the spring-type linking device 3210 is its ability to mitigate
wind-gust induced vertical impact loads. These destructive vertical
impact loads occur during wind induced accelerations and occur
directly after 1-3 second wind gusts while the traffic signal
assembly is already swinging from sustained winds.
[0364] In addition to mitigating harmful horizontal wind loads,
embodiments with a spring linking device are designed to mitigate
the even more destructive wind-induced vertical impact and/or
shock-type loads. The spring type linking device is designed as a
"restoring" force proportional to the "acceleration" force due to
primarily from the traffic signal assembly falling under the
influence of gravity.
[0365] During such conditions, the swinging signal is blown up very
rapidly and "dead falls" between gusts. This reaction is one of
"picking up and dropping" and any other traffic signal assemblies
mounted on the same span wire system, being at different
arrangements and weight, are also "bounced" and also receive
destructive vertical shock loads. Therefore in the most vertical
position the upper portions of the hanger assembly 3200 will
greatly reduce these impact loads to the signal assembly 32128
below by transferring some, if not all, of the load to the spring
3210, which in turn also transfers the load to the much stronger
span wires 3230. In relation to the current invention all systems
have two types of energy, potential and kinetic. When a spring is
stretched it stores elastic potential energy, which is then
transferred to kinetic energy. When the wind pushes against the
traffic signal the spring stretches in a curvatual manner and the
kinetic energy of the signal (wind upon its mass) gets converted
into the potential energy of the spring, as a form of
resistance.
[0366] In respect to primarily horizontal wind forces upon the
signal assembly, the spring's conservation of energy should be
determined based on equilibrium resulting from the signal's
gravitation centering and weight of the assembly--no wind loads. As
it relates to gravitation centering the spring 3212 is designed to
also resist the off-balance effect created by the extensions of
upper attachment flange 3266 and support shoe 3285. This is due to
the dead weight of the signal assembly 32128 being positioned
forward of a vertical line extending through the upper span wire
connection and the lower span wire connection. By doing this, when
the spring reaches its maximum potential energy (the strength of
the spring) the kinetic energy (wind) of the signal becomes at or
near zero. When the wind force is removed the traffic signal
assembly simply returns to its original position.
[0367] In some embodiments it may be desirable to have two or more
springs, depending on location and subject to wind events common to
the area. In some embodiments strip or flat form springs may be
used instead of the exemplary coil type spring shown.
[0368] The general operational aspect of the spring 3212 is to
first perform as a "hinged connection" allowing the traffic signal
assembly 3220 to rotate in different axes to the span wires 3130.
For example, when a wind force is applied to the signal 32128 the
lower connection 3284 begins to rotate about clamping device 3225
in a directional angle away from the earth. The upper connection
device 3286 is secured to the upper span wire 3230. Because of
this, both the lower and upper span wire connection points each
move in a general direction from a vertical plane that is opposite
of one another. The spring 3212 first provides the ability for
rotation, secondly a pulling force for resistance, and thirdly a
means to mitigate harmful wind gravity induced vertical shock
loads.
[0369] The final design of the spring 3212 being used as part of
the linking device 3210 can vary depending on a balance that
combines the right amount of coils for how much travel or distance
is needed along with the correct amount of required force.
[0370] Initial tension is created during the spring's manufacturing
process as part of the winding process. This is an internal force
that holds the coils together. The preferred measure of the initial
tension is the load necessary to overcome the internal force and
begin coil separation.
[0371] Preload is stretching the extension spring a short distance
from its free state. The extension spring 3212 will not provide any
force until it begins to stretch. In the example of a trampoline
one must pull the extension spring a short distance so you can have
a tight rubber mat to jump on. Without preloading the extension
spring, your rubber mat would not be nice and snug to jump on. As
applicable to the present invention, it is preferable to use the
dead weight of the traffic signal assembly 3220 to accomplish the
desirable preload.
[0372] Extension distance is based upon length of travel. This is
the most critical part of the design because it determines the
spring's final forces.
[0373] For example, the spring 3212 preferably will have a design
based on wind-induced dynamic forces acting upon a traffic signal
assembly supported by a dual span wire system common to Florida, a
very windy, hurricane-prone region.
[0374] The travel distance determines the amount of potential
energy stored. It is very important as part of the design
parameters not to have a travel distance (stretching of the spring)
that could create an over extension that may cause the spring 3212
to take set and not return to its original length or, worse yet,
break altogether.
[0375] Due to the associated dynamic forces imparted upon a traffic
signal assembly, shock loads, especially at the linking device
3210, must be considered. Shock loading occurs when a load is
applied with sufficient speed such that the first coils of the
spring take up more of the load than would be calculated for a
static situation. This is due to the inertia of the spring
coils.
[0376] This situation can lead to much higher stresses than
calculated for the static design. Even worse, shock loading can
lead to coil breakage, which will result in premature failure.
There are calculations known in the art to predict if a spring
system may be subject to shock loading, if the speed of force
application is known. If shock loading is suspected, fatigue
testing should be done, ideally in the actual hanger 3200 instead
of a conventional cycle test machine.
[0377] Other design considerations include the spring material. The
preferred material for the present linking device 3210 is 302, 304,
or 316 stainless steel.
[0378] The final design also needs to function properly in the
confined parameters with low stress and high cycles of life. In
addition, different design considerations for the spring linking
device 3210 will vary based upon the installation (number of span
wires, type of traffic signal assemblies) and wind zones of
different states and/or regions.
[0379] The upper portion of lower connection device 3284 is
preferably identical as previously described for the lower portion
of upper device 3286, including the method of attachment for the
spring 3212. The linking device 3210 is designed to be connected to
the lower span wire preferably using a "U-bolt" clamping device
3225 over the span wire 3230a and fastened as appropriate.
[0380] Hanger 3216 upper attachment flange 3266 and support shoe
3285 have serrated portions 3274 that are complementary to
serration portions on single unit housing 32128. The one piece
signal and terminal housing 32128 is secured to hanger 3216 upper
support flange 3266 and support shoe 3285 utilizing appropriate
fasteners 3236 after final rotational alignment utilizing
serrations 3274.
Example 45
[0381] FIGS. 136 and 137 are representative of yet another
embodiment of the novel central and continuous load path hanger
design adaptable to a dual span wire support system. In some
instances the regulatory agency of the jurisdiction may specify a
traffic control device requiring four or more signal faces,
particularly as part of an intersection requiring more than one
indicator for left turns. There is sometimes an issue of the
vertical clearance between the lowermost signal portion and the
roadway below maintaining a safe and proper distance, particularly
during installations such as rebuilding existing intersections.
Therefore, having the ability to maintain the required and safe
vertical clearance by a hanger system that permits the terminal
housing between the upper and lower span wires would be very
desirable.
[0382] FIG. 136 represents still another embodiment of the present
inventions novel hanger and housings as previously described.
[0383] The continuous hanger 3316, terminal housing 3317 and single
unit housing 3318 with integral backplate 33106 have all been
previously described many times herein above, for example, as in
connection with FIGS. 28, 29, 35-39, 44, 45, 51-53, 72, and 91. The
span wire hanger/connection device 3310 is also shown as previously
described except that the lower connection device 3384 has been
lengthened to accept the terminal housing 3317 above the lower span
wire 3330 and span wire clamp 3325.
[0384] FIG. 137 illustrates a frontal view of FIG. 136 as
previously described.
Example 46
[0385] FIGS. 138, 139, and 140 describe still another embodiment of
the novel continuous load path hanger system securing a traffic
control device to a common dual span wire support system. In this
embodiment the hanger system utilizes a plurality of external
hanger vertical support members and support plates to create a
compression type assembly that resists wind-induced shock loads
that are harmful to a typical traffic control device, due to the
multiple interconnected components used to construct a conventional
traffic signal assembly.
[0386] FIG. 138 illustrates a frontal view of another embodiment
utilizing the continuous load path hanger system 3416 to secure a
traffic signal assembly 3420 in tension along with a novel
load-spreading span wire clamp 3425.
[0387] The load-spreading span wire clamp 3425 performs three
primary functions: resist and mitigate wind induced torsional
forces (in an embodiment, increasing the lateral span wire
connection by a factor of 15 as compared to conventional span wire
connection devices); increase the points of attachment by a factor
of 3 over conventional span wire connectors; and transfer vertical
shock loads from the traffic signal assembly to the much stronger
span wire support system.
[0388] Analogous to the previously shown and described external
hanger vertical support members (1129 FIGS. 54-56 and 60) this
embodiment is utilizing adjustable steel cable 3449 (analogous to
2116 FIGS. 03, 104). Rods can be substituted, as will be apparent
to one skilled in the art. The lower support plate 3485 (analogous
to 1142 FIGS. 54-56 and 60) is here used to support the lower most
portion of the traffic signal assembly 3418. The installation
starts by connecting the hanger device 3410 to the traffic control
device 3420 sometimes comprising a disconnect box 3417 and, for
example, a three-section signal housing 3418 (doors omitted for
clarity). The hanger device 3410 and traffic signal assembly are
connected to the upper span wire as previously described. After
verifying proper vertical alignment the hanger device's lower
connection device 3484 is then connected to the lower span wire
3430 and to the load spreading clamp 3425 utilizing appropriate
fasteners 3436.
[0389] The securement of the span wire clamp 3425 is further
connected at each end utilizing u-bolts to be more fully described
below in connection with FIG. 139. The next step is to access the
signal 3418 lower portion then the lower support plate 3485 is
positioned appropriately and secured with fasteners 3436. The final
step is threading the lower end of a vertical cable hanger 3449
through a lower support plate 3485 aperture, then bringing the
cable's 3449 upper end threaded stud portion into and through clamp
3425 integral upper support flange 3466, temporarily connecting
utilizing fasteners 3436. The vertical cable hanger 3449 connection
is repeated on the opposite side, after which a final securement is
accomplished by adjusting the cable bolts to the proper amount of
tension as determined by the signal assembly material.
[0390] An additional embodiment of the continuous load path hanger
system utilizes a threaded rod (analogous to 2016 FIGS. 101 and
102) rather than the cable hanger 3449 as shown.
[0391] As will be readily appreciated by those skilled in the art,
this embodiment depicted in FIG. 138 is a combination of a span
wire connection device 3410 and continuous hanger system 3416 is
for a conventional disconnect box and 3-section housing; however,
it can be readily adapted for use with a single unit signal housing
by use of a different span wire connection device as exemplified
elsewhere herein above. Though adaptable to different span wire
connection devices, the present embodiment is currently exemplified
utilizing a pivotal-type hanger commonly used in dual span wire
systems, also previously described.
[0392] FIG. 139 is an exploded view depicting the load spreading
span wire clamp shown in FIG. 138. The span wire clamp 3425 can
connect to the hanger lower connection device 3484. Clamp 3425 and
lower connection device 3484 have recesses mutual to span wire 3430
allowing for proper alignment and additional strength. Each end can
receive u-bolts 3438 to secure clamp 3425 to span wire 3430
utilizing fasteners 3436. Clamp 3425 integral upper support flanges
3466 receive cable supports as previously described utilizing
apertures 3453 as required. For additional rigidity, reinforcement
protrusion 3446 can be incorporated as part of the manufacturing
process.
[0393] In some embodiments a span wire receiving slot or groove may
be preferable depending on the wire diameter, whereas the slot or
groove is sometimes incorporated into the lower connection device
3484 or in some instances such as a retrofit where the hanger has
no slot or groove a separate added block or plate having a slot or
groove may be added.
[0394] FIG. 140 represents a top view of the present embodiment's
load spreading span wire clamp 3425. Also shown are the adjustment
and cable support 3449 ends including the tension and final
securement fasteners 3436. For reference the disconnect 3417 hanger
lower connection device 3484 and signal 3418 are shown in
phantom.
Example 47
[0395] FIG. 141 depicts yet another embodiment of the continuous
load path hanger system 3516. The present embodiment is similar to
the embodiment previously described in Example 46 except that the
load spreading span wire clamp is not utilized. This embodiment
(without load spreading span wire clamp) permits directional
rotation of the signal assembly 3520 commonly required for diagonal
type intersections. As previously described in reference to FIG.
138, the traffic signal assembly 3520 comprises a conventional
disconnect box 3517 and a three-section signal housing 3518
connected together by standard type fasteners. The signal assembly
3520 is further held together vertically in a prescribed amount of
tension resulting from the continuous load path hanger system's
3516 use of upper 3566 and lower 3585 support plates and vertical
cables 3549. In this embodiment, the lower plate 3585 is installed
as previously described also in reference to FIG. 138. The upper
plate 3566 is installed between the bottom serrations of hanger
3510 and top serrations of the disconnect box 3517.
[0396] The connection together of the hanger 3510, upper support
plate 3566 and signal assembly 3520 is accomplished utilizing the
hanger's 3510 embedded bolt 3587 and appropriate fasteners.
[0397] FIG. 142 is an isometric view of the support plates 3566,
3585 features. The serrations 3574 mate with the signal assembly's
3520 serrations allowing rotational alignments for both diagonal
and skewed roadway intersections. Apertures 3553 provide access for
secured connections utilizing appropriate fasteners.
Example 48
[0398] FIG. 143 is a top view of yet another embodiment utilizing
the continuous load path hanger system 3616 supporting a traffic
signal assembly and a single piece backplate 36106 that is
adaptable to the hanger system 3616. The need of traffic signal
backplates for safety reasons is well documented and has been
previously described above in Example 13. For reference the load
spreading span wire clamp 3625 with integral upper support flanges
3466 is shown Also shown (in phantom) for reference is the
disconnect 3617 and signal 3618 and hanger 3684. The present
embodiment's one piece backplate 36106 is illustrated revealing its
offset attachment ribs 3660 and infill sweeps 3668.
[0399] FIG. 144 is a top view of the present embodiment
illustrating the one piece backplate 36106 adaptable to a
continuous load path hanger system previously described. Backplate
36106 comprises a formed plastic or shaped metal; infill sweeps
3668 provide a means for general sealing of light between the
backplate and signal assembly. The preferred, but not limited to,
material for the sweeps 3668 is nylon brushes with gluable flanges
extruded in plastic, such as acrylic, ABS, or even PVC. As part of
the backplate 36106 manufacturing process, offset attachment ribs
3660 are formed to provide a desired front to back depth allowing
an attachment point common to most if not all signal assemblies.
Vertical support attachment channels 3651 receive the continuous
load path hanger's vertical cables 3649 in order to connect the
backplate 36106 to the continuous hanger system that was previously
described. The preferred, but not limited to material for channels
3651 is aluminum. Channels 3651 are preferably attached to rib 3660
utilizing a proper adhesive bondable to both plastic and metal such
as a medium viscosity cyanoacrylate adhesive. In some embodiments
additional securement mechanical fasteners such as rivets may also
be preferred.
Example 49
[0400] There are variable steps in the installation of traffic
control signals that are span wire supported. Final determination
is generally decided by the contractor or his employs at a span
wire intersection. After the span wire or wires (one or more) are
installed with appropriate tensions and sag as required, the
traffic signal's location is determined and identified appropriate
to the travel direction of the vehicles below.
[0401] One type of installation process for embodiments having a
separate terminal housing and signal housing begins by installing a
saddle-type cable clamp to the load bearing span wire which is
designed to accept a hanger device below. After the saddle clamp is
secured to the span wire in its appropriate location, it is now
ready for connection to a hanger device. Although other embodiments
were described previously, the following installation procedure is
directed to a dual wire span wire system also as previously
described.
[0402] The next operation is a mechanical connection of the saddle
clamp and the hanger extension using a clevis and cotter pins.
After final determination of the hanger extension length, it is
then mechanically attached to the upper connection device using two
sets of appropriate fasteners spaced a minimum of 3 inches apart.
At this stage, the continuous hangers' lower connection device
portion is secured to the second, lower span wire, also known as
the "messenger cable", by utilizing an appropriate tether clamp
system previously as described in and shown in FIG. 16.
[0403] After the lower connection device is attached to the lower
span wire, the continuous hanger support system is completed by
pivotally connecting the prior described upper connection device to
the hanger's lower connection device and inserting a pivot pin
(generally parallel to the span wires) through the upper and lower
devices' apertures, and then securing using a cotter pin or pins as
appropriate. A final check that all mechanical connections are
appropriately tightened should be performed before installation of
the electrical component housings.
[0404] The installation of the housing begins with the upper
terminal housing (or "disconnect box"). First, the housing is
placed (minus the cover) over the hanger's square tubular portion
such that the housing's open slot is pushed toward the hanger and
to the hanger's top support plate. It is then secured with the
appropriate fasteners which can be placed in through the apertures
provided in the housing and hanger. It can be beneficial to attach
the terminal housing to the lower connection device of the hanger
system prior to the hanger's installation. The electrical wiring
process begins with bringing the main conductors into and out of
the electrical terminal housing after the appropriate connections
are completed to the housing's prior-installed terminal blocks.
[0405] The hanger system can now receive the traffic signal
housing. The housing can be installed without the doors at this
stage. The signal housings' bottom portion is positioned over the
hanger's shoe and is pushed forward while temporarily supported by
the hanger's shoe until the housings vertical attachment channel's
cradle base fits tightly to the hanger's round tubular portion. The
appropriate clamping fasteners are inserted through the housing's
channel type flanges and tightened enough to secure the housing,
but loose enough to properly orient the signal to the travel
direction below. After the required alignment is established, the
signal housing can then be secured to the hanger by tightening the
clamping type fasteners as appropriate.
[0406] The wiring from the upper terminal housing's terminal blocks
is routed through the upper housing's arcuate slots into the
traffic signal housing's receiving apertures to the traffic signal
housing's terminal blocks as appropriate. The installation is
completed by attaching the signal doors over the housing's
boss-pins, then installing the LED modules and making final
electrical connections. The doors are then closed and secured with
provided thumb screws. The installation of the signal's visors
using appropriate fasteners can complete the traffic control
device. Different connections of the load bearing attachment of the
present invention can be included. This method of operation is just
one example of the many possible arrangements that are
acceptable.
[0407] The various embodiments described herein capture all the
benefits of subject invention, which provides a support system that
eliminates deficiencies of the prior art by changing the terminal
housing's purpose from requiring structural loading of traffic
signals to merely the purpose of providing a weather-proof housing
for wiring of traffic signals.
[0408] The preceding descriptions provide a method and an improved
traffic control device comprising a continuous load path hanger
support system and traffic signal housings adaptable to the support
system of the subject invention. Also revealed is a method allowing
a change in the required fabrication materials to cost effective
plastics from more costly cast aluminum, which provides an enormous
reduction of manufacturing cost utilizing a means that incorporates
3 or more traffic control signal components never before
contemplated or possible until the present invention.
[0409] Also, the various features and aspects disclosed herein may
be combined with one another. All such variations and combinations
are contemplated within the scope of the present disclosure. Other
modifications, variations, and alternatives are also possible. Any
reference in this specification to "one embodiment," "an
embodiment," "example embodiment," et cetera, means that a
particular feature, structure, or characteristic described in
connection with the embodiment is included in at least one
embodiment of the invention. The appearances of such phrases in
various places in the specification are not necessarily all
referring to the same embodiment. Further, when a particular
feature, structure, or characteristic is described in connection
with any embodiment, it is submitted that it is within the purview
of one skilled in the art to utilize or combine such features,
structures, or characteristics in connection with other ones of the
embodiments.
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