U.S. patent number 3,775,906 [Application Number 05/213,000] was granted by the patent office on 1973-12-04 for sliding portal and operating device therefore.
Invention is credited to Earle T. Dougherty.
United States Patent |
3,775,906 |
Dougherty |
December 4, 1973 |
SLIDING PORTAL AND OPERATING DEVICE THEREFORE
Abstract
A sliding portal having an electrically actuated operating
mechanism mounted thereon.
Inventors: |
Dougherty; Earle T. (Phoenix,
AZ) |
Family
ID: |
22793336 |
Appl.
No.: |
05/213,000 |
Filed: |
December 28, 1971 |
Current U.S.
Class: |
49/358; 49/360;
49/427 |
Current CPC
Class: |
E05F
15/635 (20150115); E05Y 2600/46 (20130101); E05Y
2201/656 (20130101); E05Y 2900/40 (20130101); E05Y
2201/724 (20130101); E05Y 2201/434 (20130101) |
Current International
Class: |
E05F
15/14 (20060101); E05f 011/54 (); E05f
015/14 () |
Field of
Search: |
;49/358,360,425,426,427 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Bell; J. Karl
Claims
What I claim is:
1. An operator device for reciprocally moving a laterally sliding
portal which is operable within an opening formed in a stationary
structure, said operator device comprising:
a. a substantially horizontally disposed chain attached on its
opposite ends to the stationary structure, said chain disposed in a
plane parallel to the opening formed in the stationary structure
and positioned laterally adjacent thereto;
b. a pedestal attached to the sliding portal for movement
therewith; and
c. drive means supportingly mounted on said pedestal and positioned
to engagingly contact said chain for movement therealong when said
drive means is actuated.
2. An operator device as claimed in claim 1 wherein said pedestal
comprises:
a. a plate for supporting said drive means; and
b. mounting means attached to said plate for attaching said
pedestal to the sliding portal.
3. An operator device as claimed in claim 2 wherein said mounting
means comprises:
a. a channel member attached to said plate and depending downwardly
therefrom; and
b. a pair of clamps attached to said channel member for securing
said pedestal to the sliding portal.
4. An operator device as claimed in claim 1 wherein said drive
means comprises:
a. a gear box having an output shaft, said gear box mounted on said
pedestal;
b. a motor coupled to said gear box for providing input power
thereto;
c. an output sprocket mounted on the output shaft of said gear box
for being rotatably driven thereby; and
d. a pair of idler sprockets rotatably journaled on said pedestal,
each of said idler sprockets aligned with said output sprocket and
horizontally spaced apart with respect to each other, said idler
sprockets and said output sprocket engagable with said chain for
travel therealong resultant from rotary movement of said output
sprocket.
5. An operator device as claimed in claim 4 further comprising a
magnetic brake mounted between said gear box and said motor for
preventing movement of the operator device when power to said motor
is shut off.
6. An operator device as claimed in claim 4 further comprising a
slip clutch mounted on the output shaft of said gear box, said slip
clutch having said output sprocket mounted thereon.
7. An operator device as claimed in claim 4 further comprising a
shield mounted on said pedestal and positioned for preventing
entanglement of said output sprocket and said idler sprockets.
8. An operator device for a laterally sliding portal comprising in
combination:
a. a stationary structure having an opening formed therein;
b. a portal mounted in a plane parallel to the opening of said
stationary structure and adapted for lateral sliding reciprocal
movement in that plane between a closed position across the opening
of said stationary structure and an open position laterally
adjacent to the opening formed in said stationary structure;
c. a substantially horizontally disposed chain attached on its
opposite ends to said stationary structure and in a plane parallel
thereto, said chain mounted laterally adjacent to the opening
formed in said stationary structure;
d. a pedestal attached to said portal for movement therewith;
and
e. drive means mounted on said pedestal and positioned to
engagingly contact said chain for movement therealong when said
drive means is actuated.
9. An operator device for a sliding portal as claimed in claim 8
wherein said drive means comprises:
a. a gear box mounted on said pedestal;
b. a motor coupled to the input of said gear box;
c. an output sprocket mounted on the output shaft of said gear
box;
d. a pair of idler sprockets journaled for rotation on said
pedestal assembly, said output sprocket and said idler sprockets
each engaging said chain for moving said portal along the length
thereof when said motor is actuated; and
e. a shield mounted on said pedestal for preventing entanglement of
said output sprocket, said idler pulley and said chain.
10. An operator device for a sliding portal as claimed in claim 8
wherein said drive means comprises:
a. a gear box mounted on said pedestal and having an output
shaft;
b. a magnetic brake coupled to the input of said gear box;
c. a motor coupled to the input end of said magnetic brake, said
motor adapted to supply power through said magnetic brake to said
gear box to produce rotary motion of the output shaft thereof;
d. a slip clutch mounted on the output shaft of said gear box;
e. an output sprocket mounted on said slip clutch;
f. a pair of idler sprockets rotatably journaled on said pedestal
and in alignment with said output sprocket, said idler sprockets
and said output sprocket engageably contacting said chain for
travel therealong in response to the rotary motion of said output
sprocket; and
g. a shield mounted on said pedestal for protecting said output
sprocket and said idler sprocket from entanglement.
11. An operator device for a sliding portal as claimed in claim 8
wherein said portal comprises:
a. a vertically disposed support post;
b. a suspension and alignment pulley journaled on the upper end of
said support post for rotation about a horizontal axis, said pulley
having an arcuate groove formed in the periphery thereof;
c. a portal having a pair of guide tubes positioned in the upper
end thereof, the guide tubes being horizontally disposed and
parallel with respect to each other, the guide tubes engaging the
arcuate groove above and below said pulley for suspending said
portal therefrom and for maintaining lateral alignment of said
portal when rolled on said pulley;
d. a ground engaging wheel journaled for rotation on each lower
corner of said portal; and
e. a hook member positioned on the lower end of said support post
and slidingly engaging said portal for preventing lateral
deflection thereof.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to portal operating mechanisms, and more
particularly to a sliding gate or door with an electrically
actuated operating device mounted thereon.
2. Description of the Prior Art
Sliding portals such as fence gates and doors which are equipped
with operating mechanisms have heretofore employed a complex slide
track structure with a stationary operating device positioned
adjacent to the sliding portal.
In general, the prior art operator mechanisms are powered by
electric motors and are equipped with a suitable gear box, friction
clutch, brake mechanism and the like to drive an output sprocket.
The portal is provided with a chain which is connected to the
opposite ends of the portal. The chain is drivingly engaged by the
output sprocket of the operator mechanism so that movement of the
sprocket causes the chain and the portal to which it is connected
to slide along its track mechanism.
Therefore, it may be seen that the mounting structure which
supports and houses the operating mechanism must be adequately
secured to the ground. The operator mechanism is normally enclosed
within a box like structure which is mounted on a concrete pad
positioned adjacent to the portal.
Such prior art structures are costly to install by virtue of the
materials employed and the time involved in their
installations.
In view of the foregoing a need exists for a sliding portal
structure with an operator mechanism mounted thereon, which
eliminates some of the problems of the prior art structures.
SUMMARY OF THE INVENTION
In accordance with the invention, a new and useful sliding portal
structure with an operator mechanism mounted thereon is
disclosed.
The portal structure in the form of a fence gate or door is
slidingly mounted on a support post which has suitable pulley and
guiding devices mounted thereon. An electrically actuated operator
device is mounted on one end of the portal structure and is adapted
to move therewith. A chain is connected on its opposite ends to a
stationary portion of the fence or building which is adjacent to
the opening in which the portal is designed to operate. The
intermediate portions of the chain are in engagement with the
operator mechanism so that the portal and the operator mechanism
travel along the length of the chain when the operator is
actuated.
Accordingly it is one object of the present invention to provide a
new and useful sliding portal operator mechanism.
Another object of the present invention is to provide a new and
useful sliding portal operator mechanism of simple construction and
easy installation to reduce costs thereof.
Another object of the present invention is to provide a new and
useful sliding portal operator mechanism which reduces installation
time by eliminating the need for securing the operator mechanism to
the ground.
Another object of the present invention is to provide a new and
useful sliding portal operator mechanism which is mounted on the
sliding portal and is movable therewith.
Another object of the present invention is to provide a new and
useful sliding portal mechanism which employs an electric motor,
magnetic brake, reduction gears and output sprocket, all of which
are mounted on a pedestal secured to a sliding portal.
Another object of the present invention is to provide a new and
useful combination of a sliding portal and operator mechanism
therefore.
Another object of the present invention is to provide a new and
useful combination of a sliding portal mounted on a support post
which carries an alignment wheel and guiding device which
eliminates the need for a slide track assembly, the sliding portal
being provided with an operator mechanism mounted thereon which is
movable therewith.
The foregoing and other objects of this invention, the various
features thereof, as well as the invention itself, may be more
fully understood from the following description when read in
conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front elevation of the sliding portal structure having
the operator mechanism mounted thereon and incorporating the
features of this invention;
FIG. 2 is an enlarged sectional view taken on the line 2--2 of FIG.
1;
FIG. 3 is an enlarged sectional view taken on the line 3--3 of FIG.
1;
FIG. 4 is an enlarged sectional view partially broken away taken on
the line 4--4 of FIG. 3; and
FIG. 5 is a fragmentary sectional view partially broken away taken
on the line 5--5 of FIG. 4.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring more particularly to the drawings, FIG. 1 illustrates a
portal operator mechanism indicated generally by the reference
numeral 10. The operator 10 is shown as mounted on a sliding portal
structure 12.
The sliding portal 12 is illustrated as a fence like installation
having a stationary portion 14 and a sliding gate 16 which is
positioned to operate adjacent to a gate opening 18 provided in the
fence.
It should be understood that the sliding portal 12 as shown is
illustrative only, as the operator 10 may be adapted to function
with any similar type of sliding closure such as a garage door,
barn door, and the like.
The operator 10 includes an electric motor 20 with a magnetic brake
assembly 22 mounted thereon. The magnetic brake 22 is in turn
suitably connected to a reduction gear box 24. The gear box 24 is
provided with a base 26 which is positioned on and mounted to a
pedestal assembly 28. As best seen in FIGS. 3 and 4 the gear box
base 26 provides a mounting means for the gear box 24 itself, from
which the motor 20 and magnetic brake 22 are suspended in a
cantilever mounting arrangement.
The gear box 24 is provided with an output shaft 30 which is
disposed at a 90.degree. angle with respect to the longitudinal
axis of the motor 20, magnetic brake 22 and the input to the gear
box 24.
The output shaft 30 of the gear box 24 has a slip clutch 32 on the
periphery of which is mounted an output sprocket 34.
The pedestal assembly 28 as best seen in FIGS. 4 and 5 includes a
substantially horizontally disposed plate 36 upon which the base 26
of the gear box 24 is mounted. The plate 36 is provided with a
downwardly depending flange 38 for supporting a pair of idler
sprockets 40 and 42 as will hereinafter be described in detail.
The pedestal 28 also includes a downwardly depending L-shaped
channel 44 welded or otherwise secured to the lower surface of the
plate 36. The channel 44 is provided with a pair of spaced apart
clamps 46 and 48 bolted or otherwise secured thereto. The channel
44, clamps 46 and 48 provide mounting means for attaching the
operator mechanism 10 to the portal structure 12. Thus, the
mounting means may be modified or replaced with any mounting
devices which would be suitable for mounting the operator on a
particular type of sliding portal.
The idler sprockets 40 and 42 are rotatably journaled on suitable
bearings 49 carried on axle shafts 50 and 52. One end of each of
the axle shafts 50 and 52 are fixedly secured to the flange 38 and
extend laterally therefrom. The extending ends of the axle shafts
50 and 52 are each supportingly mounted in a flange 56 which
depends downwardly from a shield 58. The shield 58 is provided with
an arcuate upper portion 60 which protects the output sprocket 34,
the idler sprockets 40 and 42 from entanglement.
As seen best in FIGS. 4 and 5, the idler sprockets 40 and 42 are in
alignment with the output sprocket 34, and are spaced apart with
respect to each other. A chain 62 is looped over the output
sprocket 34 to extend downwardly from each side thereof into
engagement with each of the idler sprockets 40 and 42 which change
the direction of the chain 62 so that it extends outwardly and
horizontally from each of the idler sprockets 40 and 42.
The chain 62 is connected on its opposite ends 64 and 66 to the
stationary portion 14 of the fence like structure thus securing the
chain against movement.
It may now be seen that with the chain 62 secured as hereinbefore
described, the only possible movement is for the operator mechanism
10 to walk along the length of the chain 62 and carry the sliding
portal structure 12 with it.
The operator mechanism 10 is previously described, provides
additional desirable features by virtue of the magnetic brake
assembly 22 and the slip clutch 32.
When power to the motor is shut off, the magnetic brake 22 is
engaged, thus applying a load to the input of the gear box 24. This
load plus the mechanical advantage of the gear ratio provides an
effective locking mechanism so that the portal 12 cannot be
operated when the power is off.
The slip clutch 32 provides a safety feature. In the event that the
portal 12 strikes any object when it is opening or closing, motion
of the portal will stop due to slippage of the clutch 32.
As hereinbefore discussed, the operator mechanism 10 may be
employed with any type of sliding portal structure. However, to
provide a complete low-cost easily installed assembly, a particular
type of sliding portal structure is desirable.
As seen in FIGS. 1 and 2, the sliding portal 12 includes a main
support post 68 suitably rigidly fixed in the ground 70. A
suspension and alignment pulley 72 is attached to the upper end of
the post 68 by a clamp 74. The clamp 74 is provided with a trunion
76 about which the pulley 72 freely rotates.
The pulley 72 is formed with an arcuate groove 78 which fits
between an upper guide tube 80 and a lower guide tube 82 of the
portal frame 84. The upper and lower tubes 80 and 82 extend along
the length of the frame 84 and are rigidly held in a parallel
relationship by vertical end members 86 and 88. Additional suitable
braces 90 may be provided at spaced intervals to assure rigidity
and alignment of the tubes 80 and 82.
The lower ends of the vertical end members 86 and 88 are rigidly
connected to opposite ends of a bottom rail 92 to form the frame 84
into a substantially rectangular structure.
A suitable ground engaging wheel 94 is rotatably mounted on each
end of the frame 84 at the junction points formed where the
opposite ends of the bottom rail 92 are attached to their
respective end members 86 and 88. As seen best in FIG. 2, a hook 96
is provided at the lower end of the post 68. The hook 96 is
positioned to slidingly engage the bottom rail 92 of the frame 84
to prevent lateral deflection thereof.
It will be noted that when the sliding portal 12 is in a
substantially half open or half closed position as shown in FIG. 1,
it will be balanced at an intermediate point of the upper tube 80
by engagement with the top of the suspension and alignment pulley
72. At this point both of the ground engaging wheels 94 are
suspended above the ground surface 70. The total weight of the
portal 12 at this time is thus suspended on the pulley 72 for easy
movement of the portal to open or closed positions. As the portal
is moved away from its center position, it will slightly tip until
the appropriate wheel 94 engages the ground surface. It will thus
be noted that at all times the suspension and alignment pulley
supports at least half of the weight of the portal while at the
same time maintains both vertical and longitudinal alignment of the
portal by engaging its tubes 80 and 86.
While the principles of the invention have now been made clear in
an illustrative embodiment, there will be immediately obvious to
those skilled in the art many modifications of structure,
arrangement, proportions, the elements, materials, and components,
used in the practice of the invention and otherwise which are
particularly adapted for specific environments and operating
requirements without departing from those principles. The appended
claims are therefore intended to cover and embrace any such
modifications within the limits only of the true spirit and scope
of the invention.
* * * * *