U.S. patent application number 14/598370 was filed with the patent office on 2015-05-07 for barrier systems with interlocking flag.
The applicant listed for this patent is OFF THE WALL PRODUCTS, LLC. Invention is credited to Marc E. Christensen, James Schaffner.
Application Number | 20150125204 14/598370 |
Document ID | / |
Family ID | 51301613 |
Filed Date | 2015-05-07 |
United States Patent
Application |
20150125204 |
Kind Code |
A1 |
Christensen; Marc E. ; et
al. |
May 7, 2015 |
BARRIER SYSTEMS WITH INTERLOCKING FLAG
Abstract
A barrier assembly includes a barrier having a chamber adapted
to hold a ballast, an inlet being formed on the barrier in
communication with the chamber. A flag assembly includes a post
having a first end and an opposing second end with a flag disposed
on the first end. A retainer is disposed on the post and includes a
catch radially outwardly projecting from the post, the catch being
movable between an outwardly extended position and an inwardly
retracted position, the catch resiliently urging toward the
extended position when in the retracted position, the first end of
the post being received within the inlet on the barrier so that the
catch is disposed within the chamber in the extended position, the
catch being configured so that the first end of the post cannot be
pulled out through the inlet without moving the catch to the
retracted position.
Inventors: |
Christensen; Marc E.; (Salt
Lake City, UT) ; Schaffner; James; (Ogden,
UT) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
OFF THE WALL PRODUCTS, LLC |
Salt Lake City |
UT |
US |
|
|
Family ID: |
51301613 |
Appl. No.: |
14/598370 |
Filed: |
January 16, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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14336161 |
Jul 21, 2014 |
8939675 |
|
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14598370 |
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|
13436014 |
Mar 30, 2012 |
8808600 |
|
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14336161 |
|
|
|
|
12646572 |
Dec 23, 2009 |
8167512 |
|
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13436014 |
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Current U.S.
Class: |
404/6 ;
29/428 |
Current CPC
Class: |
F16B 21/12 20130101;
E01F 13/02 20130101; E01F 15/10 20130101; E01F 15/086 20130101;
Y10T 29/49826 20150115; F16B 21/186 20130101; E01F 13/022 20130101;
G09F 17/00 20130101 |
Class at
Publication: |
404/6 ;
29/428 |
International
Class: |
E01F 15/10 20060101
E01F015/10; G09F 17/00 20060101 G09F017/00; E01F 15/08 20060101
E01F015/08; E01F 13/02 20060101 E01F013/02; F16B 21/12 20060101
F16B021/12 |
Claims
1. A barrier assembly comprising: a barrier having an interior
surface bounding a chamber and an opposing exterior surface, the
chamber being adapted to hold a ballast, an inlet being formed on
the barrier; and a flag assembly comprising: a post having a first
end and an opposing second end; a flag disposed at or toward the
first end of the post; and a retainer disposed on the post and
comprising a catch radially outwardly projecting from the post, the
second end of the post being received within the inlet on the
barrier, the catch restraining removal of the post from the
barrier.
2. The barrier assembly as recited in claim 1, wherein the retainer
is at least partially disposed within the inlet.
3. The barrier assembly as recited in claim 1, wherein the inlet
communicates with the compartment and the catch is at least
partially disposed within the chamber.
4. The barrier assembly as recited in claim 1, wherein the catch is
movable between an outwardly extended position and an inwardly
retracted position.
5. The barrier assembly as recited in claim 4, wherein the catch
resiliently urges toward the extended position when in the
retracted position,
6. The barrier assembly as recited in claim 4, wherein the catch is
configured so that the second end of the post cannot be pulled out
through the inlet without moving the catch from the extended
position to the retracted position.
7. The barrier assembly as recited in claim 1, further comprising:
the post being tubular and having an interior surface that bounds a
passage, a first opening being formed on a side of the post so as
to communicate with the passage; and the retainer being at least
partially disposed within the passage of the post with the catch
projecting out through the first opening on the post.
8. The barrier assembly as recited in claim 7, wherein the first
opening comprises an elongated slot.
9. The barrier assembly as recited in claim 7, further comprising:
a second opening formed on the side of the post; and the retainer
comprising a release projecting out through the second opening, the
release being configured so that manual manipulation of the release
causes the catch to move between an outwardly extended position and
a inwardly retracted position.
10. The barrier assembly as recited in claim 1, wherein the catch
is rounded.
11. The barrier assembly as recited in claim 1, wherein the
retainer comprises a U- or V-shaped body with the catch projecting
therefrom.
12. The barrier assembly as recited in claim 1, wherein the
retainer is comprises of a resiliently flexible wire or ribbon.
13. The barrier assembly as recited in claim 1, further comprising
a pocket formed on the interior surface of the barrier, the second
end of the post being received within the pocket.
14. A method for operating a barrier comprising: inserting a second
end of a flag post within an inlet formed on a barrier, the barrier
having a chamber adapted to hold a ballast, a flag being mounted on
or toward a first end of the flag post; and advancing the second
end of the flag post into the inlet, a retainer disposed on the
flag post engaging the barrier so as to restrain removal of the
post from the inlet.
15. The method as recited in claim 12, wherein the retainer
comprises a catch outwardly projecting from the post, the catch
engaging the barrier so as to restrain removal of the post from the
inlet.
16. The method as recited in claim 15, wherein the catch is movable
between an outwardly extended position and an inwardly retracted
position.
17. The method as recited in claim 16, further comprising:
depressing a release which moves the catch to the retracted
position; and removing the flag post from the inlet of the barrier
after the catch is moved to the refracted position.
18. The method as recited in claim 14, further comprising placing
the barrier on an airport runway or taxiway prior to inserting the
flag post.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. application Ser.
No. 14/336,161, filed Jul. 21, 2014, which is a divisional of U.S.
application Ser. No. 13/436,014, filed Mar. 30, 2012, now U.S. Pat.
No. 8,808,660, which is a continuation-in-part of U.S. application
Ser. No. 12/646,572, filed Dec. 23, 2009, now U.S. Pat. No.
8,167,512, which are incorporated herein by specific reference.
BACKGROUND OF THE INVENTION
[0002] 1. The Field of the Invention
[0003] The present invention relates to barrier systems, and more
particularly, barrier systems having a removable interlocking
flag.
[0004] 2. The Relevant Technology
[0005] Control barriers are used in a variety of situations. For
example, control barriers can be selectively positioned at special
events or construction sites to help direct pedestrian and
automobile traffic in a desired direction. Similarly, control
barriers can be used at airports to delineate construction zones
and direct ground traffic and taxiing aircraft in a desired
direction. Alternatively, control barriers can be put up to help
limit access to select areas. In yet other embodiments, control
barriers can be put up to define an entertainment stage or the
boundaries of a playing field. For example, control barriers can be
used to define the boundaries of a soccer field or an ice skating
rink. Control barriers are also being used on runways and taxiways
of airports to help guide airplane traffic.
[0006] Conventional control barriers have long comprised individual
sawhorse type barriers or collapsible V-shape barricades. Such
barriers, however, have limited use since they are generally
lightweight and are thus easily tipped over or moved. This can be
especially problematic when used at airports in conjunction with
aircraft where the barriers cannot withstand the propeller wash or
jet blast produced by aircraft and will be blown over or blown out
of position. Similar problems also occur when such conventional
barriers are used in other high impact environments. Other airport
problems can arise due to the height of the barriers, which can
cause damage to engines, wings, or other portions of aircraft that
do not clear the height of the barrier. In addition, the
lightweight barrier or any portion thereof can potentially be
sucked in to the engine of the aircraft, thereby potentially
causing a great deal of damage that is typically extremely
expensive to repair and potentially dangerous to the passengers on
the aircraft.
[0007] Furthermore, conventional barriers are typically not
connected together and often have spaces or gaps extending
therebetween. As such, it is possible for individuals or ground
equipment to either slip between or through the barriers.
[0008] Other barriers comprise various gates or walls that are
mechanically assembled. Such barriers, however, require extensive
time to assemble and disassemble. In yet other alternative
embodiments, concrete barriers have been used. Although concrete
barriers are not easily tipped over and can withstand impact, such
as the propeller wash or jet blast of aircraft, such barriers are
extremely heavy. As such, they are difficult to move and place in
desired locations. Often, special equipment such as forklifts or
cranes are required. Furthermore, concrete barriers can be both
difficult and expensive to move over large distances and require a
large area to store. Concrete barriers can also be dangerous in
that they are rigid and non-forgiving when impacted by a person,
car, or taxiing aircraft.
[0009] In one attempt to overcome some of the above problems,
plastic barriers have been made. The plastic barriers are hollow
and can be filled with water for stabilizing. Although an
improvement, existing plastic barriers also have several
limitations. For example, plastic barriers are typically large and
bulky. As a result, they are not easily stacked and require large
areas to store and transport. Furthermore, conventional plastic
barriers are typically too large to meet the strict requirements of
being placed on the taxiway or runway of an airport. In addition,
when used on taxiways or runways, portions of the barriers can
break away or detach, which can also lead to potential damage to
the engines, as discussed above.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Various embodiments of the present invention will now be
discussed with reference to the appended drawings. It is
appreciated that these drawings depict only typical embodiments of
the invention and are therefore not to be considered limiting of
its scope.
[0011] FIG. 1 is a top perspective view of one embodiment of a
barrier assembly according to the present invention;
[0012] FIG. 2 is a bottom perspective view of the barrier assembly
shown in FIG. 1;
[0013] FIG. 3 is a cross-sectional side view of the projection
portions at each end of the barrier shown in FIG. 1;
[0014] FIGS. 4 and 5 are top and bottom views, respectively, of one
of the projection portions of the barrier shown in FIG. 1;
[0015] FIGS. 6 and 7 are cross-sectional side and end views,
respectively, of the ends of a pair of barriers shown in FIG. 1
coupled together by the coupler shown in FIG. 1;
[0016] FIGS. 8-10 are top plan views of a pair of barriers shown in
FIG. 1 coupled together at various angles of connection;
[0017] FIG. 11 is a perspective view of one end of the barrier
shown in FIG. 1 showing an alternative engaging mechanism;
[0018] FIGS. 12A and B are side perspective and top plan views,
respectively, of the coupler shown in FIG. 1;
[0019] FIG. 13 is a perspective view of the formed barrier and
coupler shown in FIG. 1, after being removed from the mold;
[0020] FIG. 14 is a front view of an alternative embodiment of a
coupler according to the present invention;
[0021] FIGS. 15A and 15B are front and cross-sectional top views,
respectively, of another alternative embodiment of a coupler
according to the present invention;
[0022] FIG. 16 is a cross sectional front view of a portion of an
alternative embodiment of a coupler attached to a barrier;
[0023] FIG. 17 is a cross sectional front view of a portion of
another alternative embodiment of a coupler attached to a
barrier;
[0024] FIG. 18 is a cross-sectional front view of a pair of barrier
assemblies shown in FIG. 1 stacked together for storage or
transport;
[0025] FIG. 19 is a top perspective view of another alternative
embodiment of a barrier according to the present invention;
[0026] FIG. 20 is a bottom perspective view of the barrier shown in
FIG. 19;
[0027] FIG. 21 is a perspective view of a flag assembly that can be
used with the inventive barriers;
[0028] FIG. 22 is a partial cross sectional side view of the flag
assembly shown in FIG. 21 mounted on a barrier;
[0029] FIG. 23 is an enlarged view of the circled area 23 shown in
FIG. 22; and
[0030] FIG. 24 is a cross sectional side view of an alternative
retainer that can be used to retain the flag assembly on a
barrier.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0031] As used in the specification and appended claims,
directional terms, such as "up," "down," "left," "right," "upward,"
and "downward" are used herein solely to indicate relative
directions in viewing the drawings and are not intended to limit
the scope of the claims in any way.
[0032] Depicted in FIGS. 1 and 2 is one embodiment of an inventive
barrier assembly 100 incorporating features of the present
invention. As shown in FIG. 1, barrier assembly 100 comprises a
barrier 102 and a separate, discrete coupler 104 secured
thereto.
[0033] Barrier 102 has an interior surface 106 and an opposing
exterior surface 108, the interior surface 108 bounding a chamber
110 that is adapted to receive a ballast. As used in the
specification and appended claims, the term "ballast" is broadly
intended to include any materials which can be poured into internal
chamber 110. By way of example and not by limitation, the ballast
can include water, salt water, non-freezing fluids, sand, rock,
cement, concrete, and the like.
[0034] Barrier 102 comprises a central body portion 112 having a
floor 114 and a longitudinal axis 116 extending between a first end
118 and an opposing second end 120. Central body portion 112
further comprises opposing side walls 122 and 124 extending between
floor 114 and a top wall 126. Floor 114, side walls 122 and 124,
and top wall 126 each extend from a first end face 130 disposed at
the first end 118 of barrier 102 to a second end face 132 disposed
at the second end 120 of barrier 102. First end face 130 and second
end face 132 can be substantially flat, curved, or have other
configurations. In the depicted embodiment, first end face 130 and
second end face 132 are each substantially planar so as to form a
flat surface between opposing sided walls 122 and 124.
[0035] Top wall 126 can be flat, as depicted in FIG. 1, or can be
rounded, or have other shapes. Side walls 122 and 124 are depicted
as sloping downward and away from top wall 126. That is, side walls
122 and 124 are relatively closer to each other where side walls
122 and 124 adjoin top wall 126 than where side walls 122 and 124
adjoin floor 114. In other embodiments, side walls 122 and 124 are
relatively parallel to each other and in still other embodiments,
side walls 122 and 124 can be relatively closer to each other where
side walls 122 and 124 adjoin floor 114 than where side walls 122
and 124 adjoin top wall 126.
[0036] In one embodiment, a display portion 134 can be formed into
one or both side walls 122 and 124 so that displays or other
structures can be mounted on side walls 122 and/or 124. For
example, as shown in FIG. 1, display portion 134 is recessed within
side wall 122 and is substantially rectangular. In other
embodiments, other shapes can be used. In the embodiment depicted,
display portion 134 is sized so that reflective tape 135, such as a
high intensity reflective sheeting, can be attached thereto.
Alternatively, a reflective coating can be painted on or otherwise
attached to display portion 134.
[0037] Display portion 134 can be sloped relative to the vertical
to, e.g., reflect light upward toward a car driver or a pilot who
may be many feet above the ground in an aircraft cockpit. The
amount of slope of display portion 134 may or may not coincide with
the slope of side wall 122. That is the slope of display portion
134 relative to vertical may be the same as side wall 122 or may be
different. In the embodiment depicted, display portion 134 angles
inward from side wall 122 toward opposite side wall 124 as display
portion 134 rises toward top wall 126. The slope is such that the
distance between display portion 134 and opposite side wall 124 is
greatest near floor 114 than near the top of display portion 134.
For example, in the embodiment depicted, display portion 134 forms
an angle .theta. of about three degrees relative to vertical. In
alternative embodiments, angle .theta. can be in a range between
about 2 degrees to about 15 degrees with about 2 degrees to about
10 degrees or about 2 degrees to about 5 degrees being more
preferred. Other angles can also be used. It is appreciated that
side wall 124 can include a display portion 134 in like manner to
side wall 122. Thus, in other embodiments display portions 134 can
be disposed in parallel planes, can each slope in intersecting
planes, or one wall can be vertical while the other wall slopes
relative thereto.
[0038] As shown in FIG. 2, a pair of spaced apart fork lift
channels 136 and 138 are recessed on floor 114 and extends from
side wall 122 to side wall 124. Fork lift channels 136 and 138 are
configured to receive the tines of a fork lift such that, if
desired, barrier 102 can be moved by a fork lift even if filled
with ballast. If desired, pads comprised of rubber, old car tires,
or other material having a higher coefficient of friction than
barrier 102, can be secured to floor 114 to increase the
coefficient of friction of barrier 102.
[0039] Returning to FIG. 1, one or more inlet ports 140 are formed
on top wall 126. Each inlet port 140 extends through barrier 102 so
as to communicate with chamber 110. Accordingly, barrier 102 can be
filled with ballast by passing the ballast through inlet port 140
and into chamber 110. Each inlet port 140 can be selectively closed
or sealed by a cap 142. Inlet ports 140 can each comprise a thread
molded into top wall 126 to allow the cap to be screwed onto
barrier 102. Alternatively, a threaded insert can be molded,
welded, or otherwise attached to top wall 126 to form inlet port
140. Instead of a cap, either of inlet ports 140 can be selectively
closed by a light assembly so as to eliminate the need for cap 142.
Various examples of inlet ports, caps, and light assemblies that
can be used are disclosed in U.S. patent application Ser. No.
11/828,925, filed on Jul. 26, 2007, which application is
incorporated herein by specific reference. It is appreciated that
inlet port 140 can be positioned at other locations on barrier 102.
For example, inlet port 140 can be formed directly on barrier 102
anywhere on top wall 126, or on an upper portion of either of side
walls 122 or 124.
[0040] As shown in FIGS. 1 and 2, barrier 102 further includes a
first projection portion 150 and a second projection portion 152
respectively projecting longitudinally outward from first end face
130 and second end face 132 of central body portion 112. Projection
portions 150 and 152 are configured such that for identical
barriers 102, the first projection portion 150 of one barrier can
overlap the second projection portion 152 of the other barrier
while the floor 114 of both barriers are resting on a common
support surface, as discussed in further detail below.
[0041] First projection portion 150 comprises a top surface 154 and
an opposing bottom surface 156 with a perimeter sidewall 158
extending therebetween. In the depicted embodiment top surface 156
of first projection portion 200 lies in the same plane as top wall
126 of central body portion 112 so as to be horizontally displaced
when barrier 102 is positioned on a level surface. Alternatively,
top surface 156 can lie in a different plane than top wall 126.
Bottom surface 156 projects longitudinally outward from first end
face 130 on first end 118 and is substantially parallel to top
surface 154 and thus also horizontally displaced when barrier 102
is positioned on a level surface. Other orientations can
alternatively be used.
[0042] Perimeter sidewall 158 is substantially vertical as it
extends between top surface 154 and bottom surface 156, although
this is not required. First projection portion 150 is rounded on a
distal end such that the end of first projection portion 150 is
substantially semi-circular when viewed from a position
perpendicular to bottom surface 156 of first projection 150. In the
depicted embodiment one end of sidewall 158 attaches to central
body portion 112 and lies in the same plane as side wall 122 and
the other end of sidewall 158 attaches to central body portion 112
and lies in the same plane as side wall 124.
[0043] Extending completely through first projection portion 150
between top surface 154 and bottom surface 156 is a passage 162.
Passage 162 is generally centrally located on first projection
portion 150. Turning to FIG. 3, passage 162 is formed by an
internal sidewall 164 having an outside face 166 and an opposing
inside face 168. The outside and inside faces 166 and 168 extend
from a top mouth 170 at top surface 154 of first projection portion
150 to a bottom mouth 172 at bottom surface 156 of first projection
portion 150. Outside face 166 bounds the passage 162, while inside
face 168 communicates with chamber 110. Chamber 110 can encircle
passage 162. Passage 162 is generally circular when viewed from
above. That is, passage 162 has a generally circular cross
sectional shape at any point between the top and bottom mouths 170
and 172. Other shapes can alternatively be formed.
[0044] As shown in the depicted embodiment, passage 162 is formed
in first projection portion 150 so as to include a constricting
portion 180 between top and bottom mouths 170 and 172. Constricting
portion 180 generally corresponds to the narrowest portion of
passage 162. In the depicted embodiment, passage 162 is shaped in
the form of an hourglass, with an upper portion 176 and a lower
portion 178 respectively disposed above and below constricting
portion 180. During use, constricting portion 180 prevents a
portion of elongated coupler 104 (FIG. 1) from passing all the way
through passage 162, while allowing another portion of coupler 104
to extend down through passage 162 and project below bottom surface
156 of first projection portion 150, as described in more detail
below.
[0045] Constricting portion 180 can be integrally formed with
sidewall 164, as in the depicted embodiment, or can comprise a
constriction insert that is attached to or embedded within sidewall
164. Furthermore, although constricting portion 180 is depicted as
being generally centrally located between top and bottom mouths 170
and 172 of passage 162, it is appreciated that constricting portion
180 alternatively can be positioned anywhere along passage 162.
That is, constricting portion 180 can be positioned adjacent mouth
170 or mouth 172, or anywhere in between. In addition, constricting
portion 180 can completely encircle passage 162, or can only be
positioned on one side of the passage. Other configurations are
also possible.
[0046] Returning to FIG. 2, a pair of engagers 192 project downward
from bottom surface 156 of first projection portion 150. Engagers
192 are formed on bottom surface 156 or can be molded or attached
thereto. Each engager 192 is substantially similar in size and
shape. The engagers 192 can be substantially rounded, such as
substantially semi-spherical as in the depicted embodiment, or can
be rectangular or form some other shape. The engagers 192 are
positioned on bottom surface 156 so as to be diametrically opposed
to each other, with the bottom mouth 172 of passage 162 being
positioned substantially half way between the engagers 192.
[0047] As shown in FIGS. 1 and 2, second projection portion 152
comprises a top surface 200 and an opposing bottom surface 202 with
a perimeter sidewall 204 extending therebetween. In the depicted
embodiment bottom surface 202 of second projection 152 lies in the
same plane as floor 114 of central body portion 112 so as to be
horizontally displaced when barrier 102 is positioned on a level
surface. Alternatively, bottom surface 202 can lie in a different
plane than floor 114. Top surface 200 projects longitudinally
outward from second end face 132 on second end 120 and is
substantially parallel to bottom surface 202 and thus also
horizontally disposed in the embodiment depicted when barrier 102
is positioned on a level surface.
[0048] Perimeter sidewall 204 is substantially vertical as it
extends between top surface 200 and bottom surface 202, although
this is not required. Second projection portion 152 is rounded on a
distal end such that the end of second projection portion 152 is
substantially semi-circular when viewed from a position
perpendicular to top surface 200 of second projection portion 152.
In one embodiment one end of sidewall 204 attaches to central body
portion 112 and lies in the same vertical plane as side wall 122
and the other end attaches to central body portion 112 and lies in
the same vertical plane as side wall 124.
[0049] As shown in the depicted embodiment, side wall 204 has a
recessed portion 206 disposed therein. Outwardly projecting from
side wall 204 within recessed portion 206 is a tubular stem 208.
Stem 208 bounds an outlet port 210 that extends through barrier 102
so as to communicate with chamber 110. By virtue of its position
near floor 114, outlet port 210 can be used to selectively drain
ballast from barrier 102.
[0050] A cap or plug 212 can be screwed into or onto or otherwise
attached to stem 208 so as to seal outlet port 210 closed. In
alternative embodiments, outlet port 210 can be positioned at other
locations on barrier 102. For example, outlet port 210 can
alternatively be positioned on side wall 122 or 124 of central body
portion 112 near floor 114. Likewise, as with inlet port 140,
outlet port 210 can be formed without stem 208. It is noted that by
positioning outlet port 210 in a recessed portion 206, a partially
protected space is provided for stem 208 and related cap or plug
212.
[0051] Extending completely through second projection portion 152
between top surface 200 and bottom surface 202 is a passage 220.
Passage 220 is generally centrally located on second projection
portion 152. Passage 220 is configured to generally align with
passage 162 formed in first projection portion 150 of a separate
identical barrier when first projection portion 150 is positioned
so as to overlap second projection portion 152, as discussed
below.
[0052] Returning to FIG. 3, passage 220 is formed by an internal
sidewall 222 having an outside face 224 and an opposing inside face
226. The outside and inside faces 224 and 226 extend from a top
mouth 228 at top surface 200 of second projection portion 152 to a
bottom mouth 230 at bottom surface 202 of second projection portion
152. Outside face 224 bounds the passage 220, while inside face 226
communicates with chamber 110. Similar to passage 162 in first
projection portion 150, chamber 110 can encircle passage 220.
[0053] Also similar to passage 162, passage 220 is formed so as to
include a constricting portion 238 between top and bottom mouths
228 and 230. Similar to constriction portion 180 with respect to
passage 162, constricting portion 238 generally corresponds to the
narrowest portion of passage 220 with an upper portion 234 and a
lower portion 236 of passage 220 respectively disposed above and
below constricting portion 238. In the depicted embodiment, unlike
passage 162 of first projection portion 150, passage 220 does not
have a generally circular cross sectional shape and is not
symmetrical.
[0054] Upper portion 234 of passage 220 is bounded by an outside
face 240 that comprises the portion of outside face 224 positioned
above constricting portion 238. Lower portion 236 of passage 220 is
bounded by an outside face 242 that comprises the portion of
outside face 224 positioned below constricting portion 238.
[0055] As shown in the depicted embodiment, a portion of upper
portion 234 and a portion of lower portion 236 are connected
together such as by being integrally molded together at
constricting portion 238. Constricting portion 238 can be encircled
by chamber 110. A hole 248 is formed through constricting portion
238, thereby allowing the passage 220 to extend from mouth 228 at
top surface 200 to mouth 230 at bottom surface 202. As discussed
below, a portion of elongated coupler 104 (FIG. 1) can be extended
down through passage 220 and project below constricting portion 238
of second projection portion 152.
[0056] As shown in FIG. 3, upper portion 234 of passage 220
overhangs lower portion 236 so as to form a ledge 250 at
constricting portion 238. Ledge 250 faces downward towards the
bottom surface 202 of second projection portion 152 and extends
between hole 248 and outside face 242. Ledge 250 has an inner edge
252 which bounds hole 248. Turning to FIGS. 4 and 5, ledge 250
encircles hole 248 and has an irregular shape. As best shown in
FIG. 5, inner edge 252 of ledge 250 is shaped such that hole 248
that is formed thereby has a substantially round central section
254. Hole 248 also has a pair of smaller semicircular ear-like
sections 256 extending away from central section 254 in
diametrically opposing directions. In the depicted embodiment,
extended sections 256 extend in opposite directions that are
substantially orthogonal to the longitudinal axis 116, although
this is not required.
[0057] As shown in FIG. 5, a pair of recesses 258 are formed in
upper portion 236 of passage 220 that extend up to and are bounded
by ledge 250. The recesses 258 are positioned so as to be
diametrically opposed to each other about central section 254 of
hole 248. Ledge 250 includes a pair of diametrically opposed
portions 260 aligned with recesses 258 and offset around hole 248
by approximately 90 degrees from ear-like sections 256. Portions
260 of ledge 250 are shaped to be substantially the same size as
central section 254 of hole 248.
[0058] Constricting portion 238 and the accompanying structure
located thereat can be integrally formed with sidewall 164, as in
the depicted embodiment, or can comprise an insert that is attached
to or embedded within sidewall 222. Furthermore, although
constricting portion 238 is depicted as being generally centrally
located between top and bottom mouths 228 and 230 of passage 220,
it is appreciated that constricting portion 238 alternatively can
be positioned anywhere along passage 220. That is, constricting
portion 238 can be positioned adjacent mouth 228 or adjacent mouth
230, or anywhere in between. Other configurations are also
possible.
[0059] As shown in FIG. 3, first and second projection portions 150
and 152 are configured so that the bottom surface 156 of first
projection portion 150 is disposed either in substantially the same
plane as top surface 200 of second projection portion 152 or is
disposed above top surface 200 of second projection 152. The term
"above" is defined as being a further distance away from floor
114.
[0060] Turning to FIGS. 6 and 7, because bottom surface 156 of
first projection portion 150 is either in the same plane as or
above top surface 200 of second projection portion 152, the first
projection portion 150 of one barrier 102A can overlap the second
projection portion 152 of another identical barrier 102B while
floor 114 of central body portion 112 of both barriers are resting
on a common support surface. When the identical barriers 102A and
102B overlap as in FIGS. 6 and 7, passage 162 of first projection
portion 150 of barrier 102A generally aligns with passage 220 of
second projection portion 152 of barrier 102B.
[0061] Although passage 220 is shown as extending all the way
through second projection portion 152, that is not required. For
example, in some embodiments, bottom surface 202 extends over the
entire second projection portion 152, covering bottom mouth 230 of
passage 220. In those cases, passage 220 would need to extend into
second projection portion 152 from top surface 200 past connecting
joint 238 so that coupler 104 can be secured therein.
[0062] Returning to FIG. 1, one or more pockets 216 are also formed
on the top surface 200 of second projection portion 152. The
pockets 216 are configured to receive engagers 192 disposed on the
first projection 150 of an identical barrier. As such, each pocket
216 is sized and shaped to snugly receive a separate engager 192.
The embodiment depicted includes eight pockets 216. In other
embodiments the number of pockets can be six or ten or any other
number. As shown in FIG. 4, the plurality of pockets 216 are
disposed in a substantially circular pattern around top mouth 228,
the circular pattern having a diameter that is substantially equal
to the distance between engagers 192 (FIG. 2). Each pocket 216 has
a matching pocket 216 diametrically opposed to it on the opposite
side of the circle (for example, pockets 216A and 216B). This
allows each pair of pockets 216 to be able to receive the pair of
engagers 192. For example, as shown in FIG. 6, the pair of engagers
192A and 192B of barrier 102A can respectively be received in the
pair of pockets 216A and 216B of barrier 102B when first projection
portion 150 of barrier 102A overlaps second projection portion 152
of barrier 102B.
[0063] Returning to FIG. 4, there are four pairs of diametrically
opposed pockets 216 formed in top surface 200 of second projection
portion 152 in the embodiment depicted. This allows angles of
multiples of 45 degrees to be able to be formed between the two
engaged barriers 102A and 102B when engaged, as shown in FIGS.
8-10. To receive the pair of engagers 192 in a different pair of
pockets 216, first projection portion 150 of first barrier 102A is
lifted off second projection portion 152 of second barrier 102B
until no engagers 192 are received in any pockets 216. First
barrier 102A is then rotated with respect to second barrier 102B
until the engagers 192 on first projection portion 150 of barrier
102A become vertically aligned with another pair of pockets 216 on
second projection portion 152 of barrier 102B. First projection
portion 150 of barrier 102A is then lowered onto second projection
portion 152 of barrier 102B, causing the different pair of pockets
216 to receive the pair of engagers 192.
[0064] Turning to FIG. 11, a single annular channel 218 can be used
instead of a plurality of individual pockets 216 to receive
engagers 192. In this regard a single engager 192 can also be used.
Annular channel 218 is formed in top surface 200 of second
projection portion 152. Channel 218 forms a continuous ring
recessed on top surface 200 and has a diameter substantially equal
to the distance between engagers 192. The cross-sectional shape of
channel 218 substantially mirrors the shape of engagers 192 so that
channel 218 can receive the pair of engagers 192 or a single
engager 192.
[0065] Because annular channel 218 is a continuous channel,
engagers 192 can be received by channel 218 at any location around
channel 218, thus allowing a continuum of angles to be formed
between the engaged barriers. In the depicted embodiment, the range
of angles that can be formed between two engaged barriers is about
+90.degree. to about -90.degree.. Rotating barrier 102A with
respect to barrier 102B is easier than when using individual
pockets 216, depicted above. To receive the pair of engagers 192 in
a different location within channel 218, first projection portion
150 of first barrier 102A is only slightly lifted, and then rotated
with respect to second barrier 102B until the desired angle is
obtained. First projection portion 150 of barrier 102A is then
lowered onto second projection portion 152 of barrier 102B, causing
the pair of engagers 192 to be received in a different location
within channel 218.
[0066] In view of the foregoing, projection portions 150 and 152
and the engagers 192 and pockets 216 are formed so that a selective
angle .alpha. can be formed between the longitudinal axis 116 of
each of the coupled barriers 102. Some of these angles are shown in
FIGS. 8-10. For example, in FIG. 9 angle .alpha. is shown at +45
degrees and can also extend to -45 degrees. In FIG. 10, the angle
.alpha. is shown a +90 degrees and can also extend to -90 degrees.
Here it is appreciated that by increasing the number of pockets
216, barriers 102 can be set at a larger number of predefined
angles. Likewise, by using annular channel 218, barriers 102 can be
set at any defined angle. In addition, by moving end faces 130 and
132 back, angle .alpha. can be made larger than 90 degrees. For
examples, barriers 102 can be formed to extend over an angle of at
least +120 degrees to -120 degrees.
[0067] Although engagers 192 have been disclosed as being disposed
on bottom surface 156 of first projection portion 150 and pockets
216 have been disclosed as being disposed on top surface 200 of
second projection portion 152, it is appreciated that in alternate
embodiments, engagers 192 and pockets 216 can be disposed on the
opposite surface. In other words, engagers 192 can alternatively be
disposed on top surface 200 of second projection portion 152 and
pockets 216 can alternatively be disposed on bottom surface 156 of
first projection portion 150. Also, although the preceding
discussion discloses a pair of engagers 192 being received by
different pairs of pockets 216 within a plurality of pockets, it is
appreciated that the present invention can also be accomplished by
having only a single pair of pockets 216. The present invention can
also be accomplished using only a single engager 192 that is
received within a single pocket 216, including a single engager 192
received within one of a plurality of pockets 216 or by three or
more engagers 192.
[0068] Barrier 102 is typically made of a resiliently deformable
polymeric material having strong, semi-rigid, and energy absorbing
properties. Such materials include linear or cross-linked plastics
that will deform under pressure but will not fail in a brittle
manner. Examples of conventional polymeric materials include
polyethylene (including High Density Polyethelene (HDPE)),
polyvinylchloride, nylon, polycarbonate, and polypropylene.
Additives such as dyes, pigments, and reinforcements, such as
fibers, can also be added to the material. Florescent dies can be
added to help barriers 102 glow at night for better direction of
traffic. In one embodiment, it is preferred that barrier 102 be
made from a recyclable plastic such as polyethylene or HDPE. This
enables old or broken barriers to be ground down and recycled into
new barriers.
[0069] Barrier 102 is typically made by blow molding. Of course,
other molding processes, such as rotational molding, injection
molding or die molding, can also be used. In the depicted
embodiment, an opening 266 is formed on the second projection
portion 152, as shown in FIG. 1, to allow air to be blown into the
barrier during the molding process to force the plastic material to
fill the edges of the mold as the barrier is being formed. A
fitting can be formed within sidewall 122 or 124 of second
projection portion 152 to aid in this process. Opening 266 can be
closed by a plug. Independent of the method used, it is generally
desirable that the walls of barrier 102 have a substantially
uniform thickness T, as shown in FIG. 3, so as to minimize shrink
deformation. In one embodiment, barrier 102 has a thickness T in a
range between about 0.2 cm to about 1.5 cm with about 0.3 cm to
about 0.8 being more common. The thickness is chosen to optimize
desired deflection and required strength properties. Other
dimensions can also be used.
[0070] As noted above and shown in FIGS. 1 and 2, barrier assembly
100 also comprises coupler 104. Turning to FIG. 12A, coupler 104 is
in the form of a pin comprising an enlarged head 268 with an
elongated shaft 270 extending therefrom along a longitudinal axis
272. Coupler 104 is configured to be inserted into passage 162 of
first projection portion 150 and secured therein until used to
secure the barrier to another barrier, as discussed below.
[0071] As shown in FIG. 12A, head 268 includes a gripping section
274 that extends longitudinally between a first end 276 and a
spaced apart second end 278. Gripping section 274 is designed to be
easily grasped and turned by a user so as to rotate coupler 104
about the longitudinal axis 272. Turning to FIG. 12B in conjunction
with FIG. 12A, gripping section 274 is substantially plate-like,
having a first side surface 280 and an opposing second side surface
282 that are substantially parallel to longitudinal axis 272 and to
each other, with a perimeter side wall 284 extending therebetween.
As shown in FIG. 12A, a hole 286 is formed in gripping section 274
that extends transversally completely therethrough between the
first and second side surfaces 280 and 282, although this is not
required.
[0072] As shown in FIGS. 12A and 12B, head 268 further comprises a
securing section 292 extending longitudinally away from second end
278 of gripping section 274 to a spaced apart distal end 296.
Securing section 292 has a top face 298 comprised of two sections
300 and 302 that respectively extend transversally out from the
first and second side surfaces 280 and 282 at second end 278 of
gripping section 274 to an outer edge 304. The two sections 300 and
302 of top face 298 are shaped so as to cause top face 298 to be
substantially circular in shape. As shown in FIG. 12A, an
encircling sidewall 306 extends from the outer edge 304 of top face
298 to distal end 296. Sidewall 306 is substantially
frustoconically shaped so that its diameter gets progressively
smaller as securing section 292 extends from top face 298 to distal
end 296. The diameter of sidewall 306 at outer edge 304 is
substantially greater than the diameter of passage 162 of first
projection portion 150 at constricting portion 180 (FIG. 3).
Because of this, securing section 292 cannot pass completely
through passage 162, but instead sidewall 306 thereof butts up
against outside face 166 of sidewall 164 above constricting portion
180 when coupler 104 is inserted through top mouth 170 and into
passage 162 (see FIG. 7).
[0073] Shaft 270 extends longitudinally away from distal end 296 of
securing section 292. Shaft 270 has an encircling sidewall 308
having an exterior surface 310 that extends from a first end 312
attached to sidewall 306, to an opposing second end 314 along
central longitudinal axis 272. Shaft 270 is substantially
cylindrical with a substantially constant diameter as it extends
between first and second ends 312 and 314, with a tapering at
second end 314, if desired. Other configurations can also be used.
Shaft 270 is sized so as to be able to pass through passage 162 of
first projection portion 150 and through passage 220 of second
projection portion 152. As such, shaft 270 has a cross sectional
diameter that is less than or equal to the diameter of passage 162
at constricting portion 180 and center section 254 of hole 248 of
constricting portion 238, as shown in FIGS. 6 and 7.
[0074] As noted above, coupler 104 is designed to be retained
within passage 162 after coupler 104 has been inserted therein.
Thus, coupler 104 also includes means for securing coupler 104
within passage 162 of first projection portion 150. In the
embodiment depicted in FIG. 12A, the means for securing comprises a
pair of lobes 320, radially projecting out from sidewall 308 at or
near second end 314. Lobes 320 are positioned on shaft 270 so as to
be diametrically opposed to each other relative to central
longitudinal axis 272. The distance between the outermost portions
322 of lobes 320 is slightly greater than the diameter of passage
162 at constricting portion 180 of first projection portion 150. As
a result, coupler 104 can be retained within passage 162 after
being inserted therein. Thus, lobes 320 can also be considered
securing members of the coupler or pin 104.
[0075] Lobes 320 can be generally semicircular in shape, such as in
the depicted embodiment, or some other shape. Lobes 320 can be
integrally molded with sidewall 308, as in the depicted embodiment
(see, e.g., FIG. 6) or can be attached or embedded within sidewall
308. Lobes 320 can be comprised of metal, hard plastic, or other
rigid material. Although two lobes are depicted, one or three or
more lobes can alternatively be used. When three or more lobes 320
are used, the mating structure of constricting portion 238 of
passage 220 would be modified accordingly to receive the lobes.
[0076] In one embodiment, coupler 104 is inserted into passage 162
of barrier 102 while barrier 102 is still warm after being blow
molded. The pliability of internal sidewall 164 while still warm
allows lobes 320 to pass through passage 162. Barrier 102 is then
allowed to cool and harden, whereupon the hardened internal
sidewall 164 then prevents lobes 320 from passing back through
passage 162. As such, coupler 104 is retained and secured within
passage 162. Once secured within passage 162, coupler 104 is able
to be freely rotated about longitudinal axis 272 by a user
manipulating gripping section 274. In some embodiments, coupler 104
is also molded and inserted into passage 162 while coupler 104 is
warm. In some embodiments, coupler 104 is molded inside the same
mold as barrier 102 from the same piece of material, as shown in
FIG. 13.
[0077] In light of the above, an exemplary method of manufacturing
a barrier assembly according to the present invention can include:
forming a barrier inside a mold using a polymeric material;
removing the formed barrier from the mold while the barrier is
still warm; and inserting an elongated pin into a passage formed
between top and bottom surfaces of the formed barrier before the
barrier has cooled, a securing member of the pin being passed
through a restrictive portion of the passage as the pin is
inserted, the restrictive portion of the passage allowing the
securing member to pass therethrough while the formed barrier is
still warm, but preventing the securing member from passing
therethrough when the barrier has cooled, thereby securing the pin
within the passage while still allowing the pin to freely rotate
within the passage.
[0078] Coupler 104 is also used to secure one barrier to another
barrier. As such, coupler 104 also includes means for removably
securing coupler 104 within passage 220 of a second barrier 102. In
some embodiments, the means for securing the coupler within the
passage of first projection portion 150 also acts as the means for
removably securing the coupler within passage 220. For example, as
shown in FIGS. 6 and 7, lobes 320 are also used to secure the
coupler 104 within passage 220 of second projection portion 152 of
second barrier 102B. To facilitate this, the cross sectional shape
of coupler 104 at the position of lobes 320 substantially matches
the shape of hole 248 formed by inner edge 252 of ledge 250 of
second projection portion 152. As such, the cross sectional shape
of each lobe 320 substantially matches the shape of ear-like
sections 254 of hole 248 (FIG. 5). As a result, the portion of
coupler 104 that includes lobes 320 can be passed through hole 248
of barrier 102B when lobes 320 are vertically aligned with hole
sections 254.
[0079] Once lobes 320 are passed through sections 254 of hole 248,
coupler 104 is then rotated about longitudinal axis 272 a quarter
turn by the user manipulating gripping section 274 to the position
shown in FIGS. 6 and 7. This causes lobes 320 to be received within
recesses 258 of passage 220 of barrier 102B, with lobes 320 biasing
against portions 260 of ledge 250. As a result, lobes 320 are
prevented from being removed from passage 220 of barrier 102B by
ledge 250. Barriers 102A and 102B are thus secured together by the
combination of securing section 292 of coupler 104 biasing against
outside face 166 of sidewall 164 of passage 162 of barrier 102A,
and lobes 320 of coupler 104 biasing against ledge 250 in passage
220 of barrier 102B.
[0080] When it is desired to separate barriers 102A and 102B,
coupler 104 is rotated a quarter turn about rotational axis 272 so
that lobes 320 are again vertically aligned with hole sections 254
of barrier 102B. Coupler 104 is then raised so that lobes 320 pass
back up through hole 248 of barrier 102B. First projection portion
150 of barrier 102A can then be lifted off of second projection
portion 152 of barrier 102B, with coupler 104 remaining within
passage 162 of barrier 102A.
[0081] Coupler 104 can be made of the same types of materials
listed above with regard to barrier 102. Furthermore, similar to
barrier 102, coupler 104 can be made by blow molding or another
molding process, such as rotational molding, injection molding or
die molding. In addition coupler 104 can be molded from the same
piece of material as barrier 102, as noted above. In other
embodiments, coupler 104 can be comprised of metal or other
material.
[0082] The preceding discussion describes but one example of a
means for securing a coupler within passage 162 of first projection
portion 150 and a means for removably securing a coupler within
passage 220 of a second barrier 102. It is appreciated that
alternative arrangements can be used for one or both of the recited
means. For example, FIGS. 14-17 depict various embodiments of
alternative means for securing the coupler within passage 162 of
first projection portion 150 and/or means for removably securing
the coupler within passage 220.
[0083] FIGS. 14 and 15 respectively depict alternative couplers 330
and 350 that can be used with the present invention. Couplers 330
and 350 are similar to coupler 104, discussed above, except that in
addition to lobes 320 that are used as the means for removably
securing the coupler within passage 220, couplers 330 and 350 each
also include a means for securing the coupler within passage 162
that is separate from the lobes 320.
[0084] For example, coupler 330 depicted in FIG. 14 includes a
passage 332 extending transversally through shaft 270. Coupler 330
is inserted into passage 162 of barrier 102 until passage 332
passes beyond constricting portion 180. Once passage 332 is beyond
constricting portion 180, a clevis pin 334 is inserted into passage
332. Clevis pin 334 comprises a head 336, with a shaft 338
extending therefrom to a spaced apart distal end 340. Distal end
340 of clevis pin 334 is inserted into passage 332 and shaft 338 is
pushed through passage 332 until distal end 340 extends out from
the other side of passage 332. Head 336 is sized so as to be larger
than passage 332, thereby preventing head 336 from passing through
passage 332. Once clevis pin 334 has been inserted into passage
332, a cotter pin 342 or the like is attached to distal end 340 of
shaft 338, which extends out of passage 332. Head 336 and cotter
pin 342 secure clevis pin 334 within passage 332. Clevis pin 334 is
longer than the diameter of passage 162 at constricting portion
180. As such, once attached to shaft 270, clevis pin 334 prevents
coupler 330 from being retracted out of passage 162 of barrier
102.
[0085] Instead of a passage extending transversally through shaft
270, coupler 350 depicted in FIGS. 15A and 15B includes an annular
channel 352 formed so as to encircle shaft 270. Coupler 350 is
inserted into passage 162 of barrier 102 until channel 352 passes
beyond constricting portion 180. Once channel 352 is disposed
beyond constricting portion 180, a retaining clip 354 is inserted
into channel 352. As shown in FIG. 15B, retaining clip 354 is
substantially c-shaped and is sized so as to be able to clip into
channel 352 and remain fastened thereto, as is known in the art of
retaining clips. Retaining clip 354 has an outer diameter larger
than the diameter of passage 162 at constricting portion 180. As
such, once attached to shaft 270, retaining clip 354 prevents
coupler 350 from being retracted out of passage 162 of barrier
102.
[0086] FIG. 16 depicts an alternative embodiment of a coupler 360
in which lobes 320 are solely used as the means for securing the
coupler within passage 162. Coupler 360 also includes a threaded
portion 362 disposed at second end 314 of shaft 270. To receive
coupler 360, a matching threaded socket or insert 364 is molded
into passage 220 of barrier 102 or secured thereto. Threaded
portion 362 can then be screwed into socket 364. As such, threaded
portion 362 is another means for removably securing the coupler
within passage 220.
[0087] FIG. 17 depicts another coupler 370 that includes
alternative means for removably securing the coupler within passage
220. Instead of a threaded connection, coupler 370 includes two or
more bayonet prongs 372 disposed at second end 314 of shaft 270
that are received within matching bayonet channels 374 formed in
passage 220 of barrier 102. Bayonet prongs 372 can also double as
the means for securing the coupler within passage 162, if
desired.
[0088] In one embodiment of the present invention means are
provided for mechanically mating a pair of barrier assemblies
together for transport and/or storage. Turning to FIG. 18 in
conjunction with FIGS. 1 and 2, by way of example and not by
limitation, projecting from top wall 126 is a pair of spaced apart
tenons 380 and 382. In the depicted embodiment, each tenon
comprises an outwardly projecting ring 384 that terminates at an
end wall 386 and encircles a cavity 388. A pair of spaced apart
mortises 390 and 392 are formed on floor 114 in alignment with
tenons 380 and 382. Tenons 380 and 382 are configured complementary
to mortises 390 and 392, respectively. Each mortise 390 and 392
comprises an annular wall 392 inwardly projecting from floor 114
that terminates at a recessed end wall 396. A frustum 398 centered
on end wall 396 projects out from end wall 396, terminating at or
about the same plane as floor 114. The frustum 398 is sized and
shaped to be able to be received within cavity 388 of the
corresponding tenon 380 or 382 on top wall 126 of a separate
identical barrier.
[0089] As depicted in FIG. 18, by seating a second barrier 102B on
top of barrier 102A and mating top wall 126 of barrier 102A to
floor 114 of barrier 102B, tenons 380 and 382 of barrier 102A are
received within corresponding mortises 390 and 392, respectively,
of barrier 102B. As such, barriers 102A and 102B are mated
together. The overall mated structure has a substantially
parallelepiped configuration. As a result, the mated barriers 102A
and 102B are easily stacked for transport or storage. In
alternative embodiments, tenons 380 and 382 and mortises 390 and
392 can be a variety of alternative configurations and need only be
constructed so that they mate together. In some embodiments, end
wall 386 of tenon 380 and/or 382 is omitted so that cavity 388
communicates with chamber 110. With cavity 388 open to chamber 110,
a pole with a flag or the like mounted thereon can be inserted into
chamber 110 through cavity 388 so that the flag will project up
from barrier 102.
[0090] In the embodiment depicted, barriers 102A and 102B are
configured so that when mated the top surface and bottom surface of
the assembled barriers are substantially flat except for tenons 380
and 382 that receive mortises 390 and 392. This enables groups of
assembled barriers to be easily and compactly stacked on top of and
adjacent to one another for efficient storage and/or transport.
Furthermore, as shown in FIG. 18, barriers 102A and 102B can be
stacked together even when coupler 104 is positioned within passage
162 of first projection portion 150.
[0091] Depicted in FIGS. 19 and 20 is another alternative
embodiment of a barrier 400 according to the present invention
wherein like elements between barriers 102 and 400 are identified
by like reference characters. Barriers 102 and 400 are
substantially similar except that barrier 400 contains no engagers
or pockets on either projection portions 150 or 152. The first
projection portion 150 of barrier 400 can still overlap the second
projection portion 152 of an identical barrier 400, but the
engagement is strictly by use of coupler 104 (see FIG. 1) that
extends through passages 162 and 220 of first and second projection
portions 150 and 152, as previously discussed.
[0092] In view of the foregoing, it is appreciated that various
embodiments of the present invention have a number of unique
benefits. For example, select embodiments provide an engaging means
in which one end of the barrier can overlap the end of another
barrier, forming an almost continuous wall. By using engagers that
are received within pockets, a solid connection is made between
barriers that prevents unwanted movement or rotation of one barrier
relative to the other. Furthermore, use of coupler 104 prevents
unwanted separation of the barriers. By providing tenons and
mortises on the barriers, select embodiments of the current
invention allow for easier stacking. This saves time and money when
transporting or storing the barriers. Furthermore, by permanently
securing the coupler to the barrier, the coupler will remain with
the barrier during transport and storage. This prevents separation
of the coupler from the barrier when not in use, thereby preventing
loss of the coupler. In addition, the coupler does not need to be
separately tracked, as it always remains with the barrier; this can
also greatly benefit the user.
[0093] A number of advantages are realized when used in an airport
setting. For example, in some embodiments a portion of the side
wall is sloped upward, which allows pilots to more easily see any
reflective tape or coating on the sloped portion of the side wall,
thus providing a safer airport construction environment. The low
profile nature of the barriers helps to ensure that the barriers
will not obstruct or damage planes while still providing necessary
guidance. In addition, the barriers are of sufficient size so that
when filled with a ballast, they will not be unintentionally moved
by the propeller wash or jet blast of an aircraft. Furthermore, the
coupler that is used to secure two barriers together is permanently
securing to one of the barriers. As such, even if the coupler were
to somehow become loose from connecting the two barriers together,
the coupler would still remain secured to the original barrier,
which would prevent the coupler from becoming dislodged and
possibly causing damage to the aircraft.
[0094] Depicted in FIG. 21 is one embodiment of a flag assembly 410
that can be used with the barriers of the present invention. The
flag assembly 410 comprises an elongated post 412 having an
encircling side surface 414 that extends from a first end 416 to an
opposing second end 418. As depicted in FIG. 23, post 412 is
tubular and has an interior surface 420 that bounds a passageway
422 extending along the length thereof. Returning to FIG. 21, caps
424A and B can be mounted on opposing ends of post 412. As will be
discussed below in greater detail, extending through side surface
414 towards first end 416 is an attachment opening 426. In the
depicted embodiment, attachment opening is shown as being circular
but other shapes can also be used. Formed on side surface 414
towards second end 418 is a mounting opening 428. In the depicted
embodiment, mounting opening 428 is showed as being an elongated
slot. Again, other shapes can also be used. Post 412 typically has
a length extending between opposing caps 424A and B in a range
between about 14 inches to about 40 inches with about 20 inches to
about 30 inches being more common. Other lengths can also be
used.
[0095] Flag assembly 410 also includes a flag 430. Flag 430 is
typically made of a flexible material in the form of a sheet, such
as a polymeric sheet reinforced with fibers. Other materials can
also be used. Flag 430 can be any desired size, shape, or color.
Flag 430 includes a body portion 432 and a tubular sleeve portion
434. Sleeve portion 434 can be formed by simply folding over an
edge of the flag material and stitching along the length thereof to
form a sleeve. Stitching 436 can also be formed across an upper end
of sleeve portion 434 so as to close off the upper end and thereby
form a pocket 438. During use, pocket 438 can be slid over first
end 416 of post 412 so as to attach flag 430 to post 412. A
fastener 440, such as a screw having an enlarged head 442, can be
punched through sleeve portion 434 and then secured into attachment
opening 426, such as by being threaded therein, so that enlarged
head 442 holds flag 430 onto post 412. Fastener 440 is useful in
that when the barrier on which flag assembly 410 is mounted is
located on an airport runway of taxiway, propeller wash or jet
blast can try and blow flag 430 off of post 412. Fastener 440
precludes the unwanted removal of flag 430 but also enables the
select removal and replacement of flag 430 once flag 430 has worn
or for other reasons. This configuration enables the reuse of post
412 with different flags 430. Post 412 is typically made of metal
or composite so that it has sufficient strength with withstand
propeller wash or jet blast without failure. However, other
materials can also be used.
[0096] Returning to FIG. 23, partially disposed within passageway
422 of post 412 is a retainer 444. It is appreciated that retainer
444 can come in a variety of different configurations. In the
depicted embodiment, retainer 444 has a substantially U- or
V-shaped body 446 that includes a first arm 448 and a second arm
450. Projecting from the end of second arm 450 is a U-shaped catch
452. Retainer 444 is formed from a resiliently flexible material.
For example, retainer 444 can be formed from an elongated wire or
ribbon of a resiliently flexile material, such as a metal. The
material is bent into the desired shape during the manufacturing
process so that when arms 448 and 450 are pressed together, the
arms seek to resiliently move back their originally formed
configuration. During assembly, arms 448 and 450 are resiliently
pressed together and retainer 444 is slid into passageway 442 until
catch 452 resiliently expands out into mounting opening 428. In
this configuration, catch 452 is movable between an extended
position as shown in FIG. 23 and a retracted position wherein catch
452 is pushed from outside of post 412 back towards passageway 422.
In the retracted position, catch 452 resiliently urges back towards
the extended position. That is, when catch 452 is released, it
springs back to its extended position projecting out of mounting
opening 428.
[0097] As depicted in FIG. 22, flag assembly 410 can be used in
association with barrier 102. To facilitate the mounting, an inlet
454 is formed on top wall 126 that is sized to receive second end
418 of post 412. In the depicted embodiment, inlet 454 is formed
through the end wall of tenon 380. In this configuration, second
end 418 of post 420 can be passed down through inlet 454 and then
subsequently received within a pocket 456 formed on the interior
surface of mortise 390. This configuration helps to maintain
vertical alignment of flag assembly 410. In alternative
embodiments, however, inlet 454 can be positioned at other
locations along top wall 126 and need not be received within a
pocket on floor 414. It is also appreciated that any number of
inlets 454, such as 2, 3, or more, can be formed on top wall 126 so
that multiple flag assemblies 410 can be mounted on barrier
102.
[0098] Turning to FIG. 23, inlet 454 is encircled by an annular lip
458. Inlet 454 is configured so that as second end 418 of post 412
is advanced down through inlet 454, catch 452 must strike against
lip 458 causing catch 452 to compress into the retracted position
until catch 452 passes by lip 458 at which point catch 452
resiliently expands back to the extended position. The rounded
configuration of catch 452 enables the automatic movement catch 452
into the retracted position when sufficient force is applied to
post 412. In the extended position within chamber 110, catch 452
precludes post 412 from being freely pulled out of inlet 454. That
is, post 412 can only be removed by pull up on post 412 and
exerting sufficient force to cause catch 452 to compress back into
the retracted position so that catch 452 can pass through inlet
454. This resistance to removal caused by catch 452 prevents flag
assembly 410 from being blown or sucked off of barrier 102 when
flag assembly 410 is subject to propeller wash, jet blast, wind or
other applied forces when the barrier and flag assembly are located
on an airport taxiway or runway or at other locations. The unwanted
separation of flag assembly 410 from barrier 102 can result in
potentially obscuring the visibility of barrier 102 and can also
result in flag assembly 410 becoming unwanted FOD on the runway or
taxiway which could potentially be sucked into a jet engine or can
cause other problems with adjacent aircraft.
[0099] One of the unique features of flag assembly 410 is that
retainer 444 always remains secured to post 412 and thus there is
no concern that retainer 444 could become unwanted FOD on the
airport taxiway or runway. For example, if post 412 was mounted by
a separate and distinct clamp or bolt, such clamp or bolt could
potentially become loose or fail to be properly attached. As a
result, the clamp or bolt could become unwanted FOD which is a
potential concern for aircraft. The present design avoids this
concern.
[0100] Depicted in FIG. 24 is a modified design of a retainer 444A
which includes all of the elements of retainer 444. Retainer 444A,
however, also includes an extension arm 458 that extends from catch
452 and a release 460 that projects out through a second mounting
opening 428A on post 412. Release 460 is configured to be disposed
outside of chamber 110 when catch 452 is disposed within chamber
110. In this configuration, an operator can manually depress
release 460 which moves catch 452 either partially or completely
into the retracted position so that it is easier to manually remove
post 412 from inlet 454.
[0101] The present invention may be embodied in other specific
forms without departing from its spirit or essential
characteristics. The described embodiments are to be considered in
all respects only as illustrative and not restrictive. The scope of
the invention is, therefore, indicated by the appended claims
rather than by the foregoing description. All changes which come
within the meaning and range of equivalency of the claims are to be
embraced within their scope.
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