U.S. patent number 3,642,282 [Application Number 05/032,604] was granted by the patent office on 1972-02-15 for foldable goal structure.
Invention is credited to Arnold Frischman.
United States Patent |
3,642,282 |
Frischman |
February 15, 1972 |
FOLDABLE GOAL STRUCTURE
Abstract
A foldable hockey goal having top front and rear bars joined by
a pair of side bars to a bottom rear bar, with foldable joints
between the top rear bar and the side bars, and between the bottom
rear bar and the side bars. In one embodiment the top rear bar
swings down, the bottom rear bar swings up, and the side bars
telescope to fold the goal. In another embodiment, the side bars
are hinged at their middles and fold or buckle inwardly to collapse
the top bars down onto the bottom bar. In all cases the net, which
is attached to the top front, side, and bottom rear bars, can be
left in place during folding. A generally vertical central support
member extends between the centers of the upper and lower rear
members to improve the rigidity.
Inventors: |
Frischman; Arnold (Toronto,
Ontario, CA) |
Family
ID: |
21865810 |
Appl.
No.: |
05/032,604 |
Filed: |
April 28, 1970 |
Current U.S.
Class: |
473/478; 135/139;
248/150 |
Current CPC
Class: |
A63B
63/004 (20130101); A63B 2208/12 (20130101); A63B
2210/50 (20130101) |
Current International
Class: |
A63B
63/00 (20060101); A63b 063/00 () |
Field of
Search: |
;273/127R,127A,127B,127C,127D,26R,26A,26D,29R,29B,29BA,29BB,29BC
;135/4R,4A,4B,4C,7.1R,7.1A ;272/59C ;248/150,166,165 ;52/69,71,64
;40/129R,125H |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Oechsle; Anton O.
Assistant Examiner: Kramer; Arnold W.
Claims
What I claim as my invention is:
1. A folding goal structure having a frame, and a net connected to
said frame, said frame comprising:
a. a pair of generally upright front side members,
b. a lower horizontal rear member extending between said side
members and also extending rearwardly therefrom,
c. a pair of first joints, one for each side member, each first
joint connecting the bottom of its associated side member with an
end of said lower rear member to permit folding of its associated
side member and said lower rear member relative to each other,
d. an upper horizontal front member extending between said side
members at the front of said frame, and an upper rear horizontal
member extending rearwardly of said upper front member,
e. a pair of second joints, one for each side member, each second
joint connecting the top of its associated side member with an end
of said upper rear horizontal member to permit folding of its
associated side member and said upper rear horizontal member
relative to each other so that when said first and second joints
are folded, said upper and lower rear horizontal members lie
substantially parallel to each other,
f. a substantially vertical central support member having a top
portion and a bottom portion,
g. locking means including means for connecting said top and bottom
portions rigidly together and being disengageable to permit folding
of said top and bottom portions, a third joint connecting the top
of said top portion to said upper rear member and a fourth joint
connecting the bottom of said bottom portion to said lower rear
member to permit folding of said top portion relative to said upper
rear member and of said bottom portion relative to said lower rear
member when said means for rigidly connecting said top and bottom
portions are disengaged,
h. substantially the entire periphery of said net being fastened to
said upper front, lower rear and side members.
2. A goal structure according to claim 1 wherein said first and
second joints permit folding of said upper rear and lower rear
members toward each other relative to said side members, said upper
rear member thus being foldable downwardly and said lower rear
member being foldable upwardly.
3. A goal structure according to claim 1 wherein said third and
fourth joints permit folding of said top and bottom portions in a
side to side direction.
4. A goal structure according to claim 3 wherein each of said side
members includes at its top a short inwardly extending horizontal
portion, said upper rear member being connected by said second
joints to said short horizontal portions, said upper front member
being connected to said short horizontal portions of said side
members.
5. A goal structure according to claim 4 wherein said upper rear
member is of lesser side to side and front to rear extent than said
lower rear member,
6. A goal structure according to claim 4 wherein each of said side
members includes a pair of tubular members telescopically fitted
together, and member locking means for retaining said tubular
members in extended position.
7. A goal structure according to claim 6 wherein said locking means
includes a pair of bracing members, and means for connecting each
said bracing member diagonally between a side member adjacent the
bottom thereof and said lower rear member adjacent the front
thereof, each said bracing member being pivotally connected to one
of its associated side member and said lower rear member and having
means for detachably connecting it to the other of its associated
side member and said lower rear member.
8. A goal structure according to claim 7 wherein each said bracing
member is pivotally connected to said lower rear member and
includes an inwardly directed end, and said side members include
apertures therein adapted snugly to receive said inwardly directed
ends.
9. A goal structure according to claim 8 wherein each of said upper
and lower rear members is formed generally in the shape of a W,
with the outer arms of said W slanting rearwardly inwardly from
said side members when said goal is erected, the connection of said
bracing members to said lower rear member being at the outer
surfaces of said outer arms, the inward slant of said outer arms
being such that the ends of said bracing members connected to said
outer arms are located inwardly of said side members, so that when
said lower rear member is folded upwardly, said bracing members
will clear said side members, permitting said lower rear member to
be folded flat between said side members.
10. A goal structure according to claim 4 wherein said upper front
member is integrally connected to said short horizontal portions of
said side members, and said upper rear member has curved forward
ends each formed of a double metal layer and each curving over its
associated short horizontal portion and extending at least
90.degree. past the top of such short horizontal portion, each said
curved end having a longitudinal slot therein, each of said second
joints comprising bolt means extending through a said slot and
through a said short horizontal portion to releasably clamp said
curved ends to said short horizontal portions.
11. A goal structure according to claim 4 wherein said top and
bottom portions of said central support member are telescopically
fitted together when said frame is erected, said first and second
joints permitting swinging of said upper and lower rear members
apart relative to each other sufficiently to disengage said top and
bottom telescoped portions of said central support member when said
connecting means for said top and bottom portions is
disengaged.
12. A goal structure according to claim 1 wherein each of said side
members includes an upper part and a lower part and a fifth joint
connecting said upper and lower parts, said first, second and fifth
joints permitting inward folding of the upper and lower parts of
each side member towards the upper and lower parts of the other
side member as well as towards each other to a position in which
said side member parts are substantially entirely folded, thus to
collapse said upper front and rear members downwardly to overlie
said lower rear member, said locking means including means operable
to maintain said fifth joints in unfolded position to lock said
side member parts in erected condition.
13. A goal structure according to claim 12 wherein said top and
bottom parts of said side members are tubular and said fifth joints
each include a pair of opposed connecting members connecting said
top and bottom parts for movement between an extended position in
which said top and bottom parts substantially abut in end to end
relation, and a folded position in which said top part overlies
said bottom part, said means operable to maintain said fifth joints
in unfolded condition including a pair of sleeves one slidable over
each of said fifth joints to prevent folding thereof.
Description
This invention relates generally to a foldable goal structure, and
more particularly to a foldable goal structure of the type suitable
for use as a hockey goal.
Hockey goals of the type which are portable and which can be used
by children have become popular because of their portability and
because they are relatively inexpensive and easily stored. However,
a major problem with such goals in the past was that the net had to
be attached to the goal frame each time the goal was assembled and
detached each time it was collapsed. The time required for this
operation has been greatly reduced by threading the net onto the
goal frame, as shown in my Canadian Pat. No. 773,958 issued Dec.
19, 1967 for "Collapsible Goal Structure". However, once such a
goal is assembled, it is often desired to leave it assembled for
substantial periods of time, during periods when it is in frequent
use, and this requires storage of the goal in its erected
condition. Since the goal is quite bulky, such storage can present
difficulty where storage space is limited.
Therefore, it is the object of the present invention to provide a
foldable goal structure which can be folded when not in use, to
occupy a reduced space, without any portion of the net being
detached during the folding operation. In the preferred embodiments
to be described, the goal structure can be folded to a sufficiently
small size that it can also be packaged and sold in folded
condition, with the net fully attached thereto. Thus, when a
customer purchases the goal, he can simply unfold it and use it,
without being required to attach the net to the goal frame.
According to the invention, folding joints are provided between the
top rear member of the goal frame and the side members of the goal
frame, and between the bottom rear member and the side members of
the goal frame. In one embodiment of the invention, the top and
bottom rear members of the frame fold toward each other to reduce
the front to rear dimension of the goal, and preferably the side
members telescope to reduce the height of the goal. In another
embodiment of the invention, the side members fold inwardly towards
each other at their centers, at the same time folding relative to
the top and bottom members of the goal, so that the top members of
the goal collapse downwardly to overlie the bottom member of the
goal.
Further objects and advantages of the invention will appear from
the following description, taken together with the accompanying
drawings, in which;
FIG. 1 is a perspective view of a goal structure according to the
invention, in the erect condition;
FIG. 1A is a sectional view along lines 1--1 of FIG. 1;
FIG. 2 is a front elevation view showing the FIG. 1 goal structure
(without the net) in a partially collapsed condition;
FIG. 3 is a side elevation view of the FIG. 1 goal structure in the
partially collapsed condition of FIG. 2;
FIG. 4 is a side elevation view of the goal structure of FIG. 1 in
a more fully collapsed condition;
FIG. 5 is a perspective view of a button assembly used in the
vertical side members of the FIG. 1 goal structure.
FIG. 6 is a sectional view along lines 6--6 of FIG. 5;
FIG. 7 is a sectional view along lines 7--7 of FIG. 1;
FIG. 7A is a front view of a goal frame in folded condition, the
frame being modified from that of FIG. 1;
FIG. 8 is a perspective view showing an upper corner of the FIG. 7A
goal;
FIG. 9 is a sectional view along lines 9--9 of FIG. 8;
FIG. 9A is a sectional view showing a modification of the FIG. 9
arrangement;
FIG. 10 is a view partly in section showing a central support
member for the FIG. 7A goal;
FIG. 11 is a perspective view of a second embodiment of the
invention, in the erect condition;
FIG. 12 is a front elevation view of the embodiment of FIG. 11 in a
partially collapsed condition;
FIG. 13 is a front elevation view of the embodiment of the FIG. 11
in a fully collapsed condition;
FIG. 14 is a perspective view of a joint used in the vertical side
members of the FIG. 11 goal structure, the joint being in the
unfolded condition;
FIG. 15 is a perspective view of the flexible joint of FIG. 14, the
joint being in a partially folded condition;
FIG. 16 is a perspective view of a joint between the top front and
rear frame members and one of the vertical side members of the FIG.
11 goal structure, the goal being in an erect condition;
FIG. 17 is a perspective view of the joint shown in FIG. 16, the
goal being in a collapsed condition;
FIG. 18 is a sectional view along lines 18--18 of FIG. 17;
FIG. 19 is a sectional view along lines 19--19 of FIG. 11, and
FIG. 20 is a perspective view of a alternative joint for the FIG. 1
goal.
Reference is first made to FIG. 1, which shows a simple hockey goal
20 according to the invention. The goal 20 includes a number of
metal tubular members assembled together to form a frame 22, with a
net 24 attached to the frame in a manner to be described.
The frame 22 consists of an upper front horizontal member 26, an
upper rear horizontal member 28, a pair of side vertical members
30, and a lower rear horizontal member 32. A generally vertical
central support member 34 extends between the centers of the upper
and lower rear members 28, 32 to improve the rigidity of the frame.
All of the frame members are typically of tubular aluminum.
The side members 30 of the frame each have a lower portion 36 and
an upper portion 38 which telescopes over the lower portion 36.
Telescoping of each side member is normally prevented by a button
40 (FIGS. 5 and 6) which projects through apertures 42,44 in the
lower and upper portions of each side member 30. The button 40 has
at its rear a pin 46 fitted into an aperture in one leg 48 of a
U-shaped spring 50. The other leg 51 of the spring 50 is fastened
to the lower side member portion 36, so that the spring urges the
button 40 into the apertures 42, 44 to prevent telescoping of the
side members until the buttons 40 are pushed in.
Each side member 30 has at its top a short inwardly projecting
horizontal portion 52. The horizontal front top member 26 of the
goal frame is telescopically fitted into the side members 30 at the
inwardly projecting portions 52. In addition, the inwardly
projecting portions 52 of the side members are connected to the top
rear frame member 28, at joints 54.
At each joint 54, the forward end of the top rear frame member 28
is flattened into a slightly hooked member 56, curved to fit snugly
over its associated inwardly projecting frame portion 52. A bolt 58
extends downwardly through the hooked member 56 and the frame
portion 52 and is held by a wingnut 60. The frame portion 52
includes a pair of diametrically opposed slots 62, each of slightly
more than 90.degree., which allow the upper rear frame member 28 to
be swung downwardly through an angle of approximately 90.degree.
relative to the side frame members 30 (FIG. 1A).
The bolt 58 also passes through diametrically opposed holes 63 in
the ends of the upper front frame member 26 (FIG. 1A). Since the
holes 63 accommodate the bolt 58 relatively snugly, the top front
bar 26 rotates within the inwardly projecting portions 52 of the
side members whenever the top rear frame member 28 is folded up or
down.
The lower ends of the side members 30 are connected to the forward
ends of the lower rear frame member 32 by bolts 64 and wingnuts 66.
The forward ends of the lower rear frame member 32 are flattened as
shown at 68 so that when the wingnuts 66 are loosened, the lower
rear frame member 32 can be swung upwardly relative to the side
members 30.
To increase the rigidity of the frame 22, a pair of bracing rods 70
may be provided at the joints between the side members 30 and the
lower rear frame member 32. The bracing rods 70 are permanently
pivotally connected by bolts 72 to the outside surface of the lower
rear frame member 32, at positions spaced rearwardly of the side
members 30. The rods 70 run diagonally forwardly and upwardly and
have inwardly hooked ends 74 which fit snugly into apertures 76
near the bottom of the side members 30. The rods 70 are slightly
flexible so that the hooked ends 74 can be withdrawn from the
apertures 76 before the goal frame is folded.
The central support member 34 consists of upper and lower parts 78,
80 which are connected respectively to the upper and lower rear
frame members 28,32 by bolts and wingnuts 82, 83, 84, 85. The upper
part 78 of the support member 34 fits into a semisleeve portion 86
of the lower part 80 and is held in place therein by a bolt and
wingnut 88, 90.
When it is desired to fold the goal shown in FIG. 1, the wingnuts
and bolts 83, 85 at the ends of the central support member 34 are
loosened, and the top and bottom parts of the central support
member are disconnected by removing the wingnut 90 from the bolt
88. The upper part 78 of the central support member is then rocked
forwardly, and the lower part 80 is locked rearwardly, to
disconnect the two, and the upper and lower parts 78, 80 may then
be rotated to the side as shown in FIG. 2. With the vertical
support member 34 disconnected, the side members 30 may next be
telescoped by withdrawing the ends of the bracing rods 70 from the
holes 76 in the side members and then by pressing the buttons 40 in
the side members. The side members are then telescoped until the
bottoms of their top parts 38 rest on the top of the lower rear
frame member 32, as shown in FIG. 2. The top and bottom wingnuts
60, 66 are then loosened, and the upper rear frame member 28 is
swung downwardly and the lower rear frame member 32 is swung
upwardly, past the position shown in FIG. 4, to a position in which
the side members 30, and the upper front and rear bars 26, 28, all
lie in the same plane, and the lower rear bar 32 lies almost in
that plane.
To permit such compact folding, the lower rear frame member 32 is
set within the side members 30. In addition, since the sides of the
lower rear frame member 32 curve inwardly as they extend
rearwardly, the bracing rods 70 and bolts 72, where they are
attached to the lower rear frame member 32, are located inwardly of
the inner surfaces of the side members 30 (see FIG. 7). Therefore,
the lower rear frame member 32 can be swung upwardly almost into
the plane of the side members 30, once the rods 70 are swung
rearwardly. The upper rear frame member 28 is of lesser extent from
side to side and from front to rear than is the lower rear frame
member 32, so that the points where the two folded members
interfere is well towards the rear of the lower rear frame member,
as shown diagrammatically in FIG. 7A. (Typical dimensions for the
FIG. 7A goal are listed in Table I at the end of this
description.)
In FIG. 7A, the top part 38 of the side members has been made
integral with the upper front member 26, and telescopes into the
lower part of the side members. This is also shown in FIG. 8. This
arrangement eliminates the double layer of tubing caused by the
telescopic connection at joint 54. To avoid weakening of the single
layer of tubing remaining, the slots 62 have been eliminated and
replaced by a straight bolt hole 97 (FIG. 9). However, the hooked
ends 56 of upper rear member 28 are extended so that their ends
extend at least 90.degree. past the bolts 58, and slots 98 are
formed in the hooked ends 56 to allow downward swinging of the
upper rear bar 28 through 90.degree. (and also to allow slight
upward swinging of the upper rear bar). The slots 98 do not
seriously weaken the hooked ends 56, because these ends are formed
from a double layer of metal.
Instead of the hooked ends 56, a complete bushing can be formed at
the forward ends of the upper rear bar 26, as shown at 99 in FIG.
9A. The bolt 58 can then be replaced by a self-tapping screw 99a
which penetrates only the upper surface of the tubing, since it
acts merely as a stop. This arrangement enables smoother rotation
of the top rear bar but is of course more difficult to
manufacture.
In the FIG. 7A embodiment the connection between the parts of the
central support member 34 has been replaced by the simplified
arrangement shown in FIG. 10. In the FIG. 10 arrangement, the upper
and lower parts 78, 80 are tubing of the same size, but the lower
part 80 is squeezed or swedged so that it telescopes into the upper
part 78 (the extend of the overlap is typically 11/2 inches). The
two parts are held together by a spring loaded button 92 mounted in
the lower part 80, exactly like the buttons 40 previously
described. The upper and lower parts 78, 80 are permanently
attached to their respective rear bars by nuts and bolts 94, 96. To
disengage the parts 78, 80, the button 92 is depressed and the
upper part 78 is pulled upwardly. There is sufficient slack in the
joints 54 so that the top rear bar will pivot slightly upwardly
when this is done, so that the upper part 78 is lifted by the 11/2
inches needed to disengage it from the lower part 80. This
arrangement holds the upper rear bar 28 against upward or downward
movement when the button 92 engages the parts 78, 80, and yet when
the parts are disengaged, there is no bolt and wingnut to become
lost.
It is found that when the upper side member portions 38 and the
upper front bar 26 are integral, the goal is sufficiently rigid
that the bracing rods 70 can usually be dispensed with. Further,
the bolts used in the various joints can all be fitted with nuts
adjusted to the desired thickness and the wingbolts eliminated, so
that there are no bolts to tighten or loosen when folding and
unfolding the frame. When the frame is then erected, there will be
very little side-to-side sway, and some front to back sway which
can be controlled depending on the tolerances and tightness of the
bolts and which is not normally objectionable.
Reference is next made to FIGS. 11 to 19 which show another
embodiment of the invention. In the FIGS. 11 to 19 embodiment, the
erected goal has an appearance similar to the embodiment of FIGS. 1
to 6, and primed references numerals indicate parts corresponding
to those of FIGS. 1 to 6. However, in the FIGS. 11 to 19 embodiment
the side members 30' and the central support member 34' have
central joints 100, 102 respectively which permit collapse of these
members as shown in FIG. 12 so that the top frame members of the
goal move downwardly to overlie the bottom rear frame member of the
goal, as shown in FIG. 13. Each of the joints 100, 102 is identical
and therefore only one of the joints 100 will be described with
reference to FIGS. 14 and 15.
At the joint 100, the tubular members 36', 38' normally abut end to
end when the joint is unfolded. The members 36', 38' are held
together by a pair of diametrically opposed connecting plates 104,
the plates 104 being pivotally connected to members 36', 38' by
bolts 106 and nuts 107. The plates 104 are spaced slightly
outwardly from members 36', 38' by washers (not shown) inserted
over the bolts 106 between plates 104 and members 36', 38'. The
connection allows pivoting of members 36', 38' from the extended
position shown in FIG. 14 through the partly folded position shown
in FIG. 15 to a position in which members 36', 38' are parallel
with each other.
To lock the members 36', 38' in extended position, a sleeve 108 is
provided, sliding on the upper member 38'. The sleeve 108 includes
a pair of diametrically opposed slots 110 to accommodate the
previously mentioned washers. When the joint 100 is to be locked in
unfolded position, the sleeve 108 is slid downwardly until the
upper ends of the slots 110 engage the washers over the upper bolts
106, and this prevents further downward movement of the sleeve 108.
The sleeve 108 at this time overlies both the members 36', 38' to
prevent folding of the joint 100.
Each side member 30' has at its top a horizontal rearwardly
projecting portion 112 (FIGS. 11, 16, 17) which is connected to the
upper front and rear frame members 26', 28' so as to allow inward
folding of the top parts 38' of the side members 30' in the manner
shown in FIG. 12. The joints between the tops of the side members
and the top frame members 26', 28' are generally indicated at 114.
Both joints 114 are the same, and one of the joints 114 is shown
unfolded in FIG. 16 and folded in FIG. 17.
At the joint 114, the forward end of the upper rear frame member
28' is telescopically fitted into the rearwardly projecting portion
112 of the side member 30'. In addition, the ends of the upper
front frame member 26' are flattened and curved at 116 to fit
snugly over the tops of the rearwardly projecting portions 112 of
the frame side members 30' (in the manner shown for joints 54 of
FIG. 1). A bolt 118 passes through the end 116 of the upper front
frame member 26' and through rearwardly projecting portion 112 and
through the end of upper rear frame member 28', to hold these three
members together. The bolt is held in position by a nut 120.
The upper side member part 38' is allowed to pivot inwardly by a
slot 122 extending slightly more than 270.degree. around the
circumference of rearwardly projecting portion 112. The slot is
best shown in FIG. 16. The nut 120 is normally tightened to a
degree sufficient to hold the parts snugly together, but to allow
pivoting of the upper portion 38' of the side member when the joint
100 in the middle of the side member in question is loosened.
The bottoms of the side members 30' have rearwardly extending
portions 124 into which the forward ends of the lower rear frame
member 32' are telescoped. Bolts 126 are provided to hold the parts
together. Inward pivoting of the lower portions 36' of the side
members relative to the lower rear frame member 32' is permitted by
a pair of slots 128 (FIG. 9) each of which extends around slightly
more than 90.degree. of the circumference of rearwardly projecting
portion 124 of the side frame members.
When it is desired to fold the goal shown in FIG. 11, the collars
108 at each of the joints 100, 102 are raised and the side frame
members 30' are folded inwardly towards each other as shown in FIG.
12. At the same time, the central support member 34' is folded to
one side of the goal as also shown in FIG. 12. The bolts at the top
joints 114, and also the bolts 126 at the bottom of the goal, and
the bolts 82' 84' at the top and bottom of the central support
member 34', need not be loosened since they are normally adjusted
during manufacture of a goal to a condition such that the goal can
be folded and yet such that when the goal is erected, it will be
sufficiently stable. As the members 30', 34' are folded, the upper
frame members of the goal descend until they overlie the lower rear
frame member 32', as shown in FIG. 13. The procedure is of course
reversed to erect the goal.
During manufacture of the goal shown in FIGS. 1 to 10, the net is
preferably connected by threading it onto the upper front frame
member 26, then assembling the frame member 26 with the side
members 30 and the rear member 32, and then threading the net down
over these members and lacing it to the lower rear frame member 32.
The bracing rods 70 may be installed after this has been done, or
before, since they are relatively short and will not interfere
substantially with the threading of the net. After this has been
completed, the upper rear frame member 28 and the central vertical
support member 34 are installed. A similar procedure may be
followed for the goal of FIGS. 11 to 19. Once assembled, the goal
is then folded in the manner described and packaged for sale.
When the net is assembled to a goal of the types shown in FIGS. 1
to 10, a piece of tape 150 (FIG. 8) can be applied to each lower
portion 36 of the side members, near the bottom thereof. The tape
secures one or more strands of the net 24 to the lower parts of the
lower portions 36 of the side members. This does not interfere with
the folding of the goal, and it has the advantage that when the
side members 30 are telescoped, the net cannot drop down into the
joints at the bottoms of the side members to interfere with upward
folding of the rear bottom member 32.
FIG. 20 shows an alternative joint between the upper rear bar 28
and the side members 30 for goals of the types shown in FIGS. 1 to
10. In the FIG. 20 arrangement, a U-shaped bracket 152 is secured
to each forward end of the upper rear member 28 by a rivet 154. The
forward end of the sleeve 152 is crimped over the forward end of
member 28 as shown at 156, for added security. The sleeve 152 has
two forwardly projecting arms 158 which extend one on each side of
the side member 30 and are secured to the side member by a pin 160
which acts as a pivot. The rear member 28 can thus be folded as
indicated by arrow 162. Enough clearance is provided in the joint
so that the rear member 28 can be swung upwardly from its erected
condition sufficiently to disengage the central support member 34,
as before.
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TABLE I
size Dimension (inches) A (width of goal from side to side) 56 B
(height of upper portion of side members) 23 C (height of lower
portion of side members) 221/2 D (FIG. 2) (height of goal when
erected) 431/2 E (depth of bottom rear bar, front to back) 22 F
(depth of top rear bar, front to back) 17 G (front to rear distance
from front of bottom rear bar to point of overlap of front and rear
bars when goal is folded) 15 H (length of top part of side members)
23/4 I (length of top part of central support member) 221/2 J
(length of bottom part of central support member) 211/2 K (tubing
diameter) 1
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