U.S. patent application number 11/236892 was filed with the patent office on 2006-04-06 for retractable telescoping court standard.
Invention is credited to Cecil Edward Stambaugh.
Application Number | 20060073922 11/236892 |
Document ID | / |
Family ID | 34619879 |
Filed Date | 2006-04-06 |
United States Patent
Application |
20060073922 |
Kind Code |
A1 |
Stambaugh; Cecil Edward |
April 6, 2006 |
Retractable telescoping court standard
Abstract
A collapsible court standard for positioning a net above a
gymnasium floor includes an embedded upright floor tube with a top
end which is level with the floor; one or more contained tubes
slidably positioned within the floor tube; a releasable lock means
and biased rocker latches to maintain the contained tubes at a
selected height. Pneumatic power is supplied to the embedded
upright floor to lift the contained tubes. The releasable lock
means includes a split ring to maintain the net at a particular
height. A shock absorbing pad cushions the contained tube upon
retraction, and a movable floor cover is attached to the floor tube
to provide access to the contained tubes. A winch and pulley are
attached to a contained tube or innermost cylindrical member so
that a net cable may be drawn over the pulley and tightened with
the winch.
Inventors: |
Stambaugh; Cecil Edward;
(Colorado Springs, CO) |
Correspondence
Address: |
LAW OFFICE OF DALE B. HALLING, LLC
655 SOUTHPOINTE COURT, SUITE 100
COLORADO SPRINGS
CO
80906
US
|
Family ID: |
34619879 |
Appl. No.: |
11/236892 |
Filed: |
September 28, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
10714094 |
Nov 17, 2003 |
|
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|
11236892 |
Sep 28, 2005 |
|
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Current U.S.
Class: |
473/492 |
Current CPC
Class: |
A63B 61/02 20130101;
A63B 71/028 20130101; A63B 2210/50 20130101 |
Class at
Publication: |
473/492 |
International
Class: |
A63B 61/02 20060101
A63B061/02 |
Claims
1) A court standard for positioning a net above a gymnasium floor
comprising: an embedded upright floor tube having a top end portion
which is nominally in alignment with the gymnasium floor; a
contained tube closely and slidably positioned within the floor
tube; and a releasable lock means to maintain the contained tube at
a selected height above the floor.
2) The court standard as in claim 1, further comprising: a
pneumatic supply line attached to the embedded upright floor tube
at a first end and a pneumatic power supply at a second end; and a
pneumatic toggle switch incorporated into the pneumatic supply line
between the first end and the second end.
3) The court standard as in claim 2 wherein the releasable lock
means comprises a split ring adapted to engage the contained tube
to maintain the net at one of multiple heights, said height
selected for a game being played.
4) The court standard as in claim 3 wherein there are a plurality
of contained tubes, each contained tube closely and slidably
positioned within a tube therebelow.
5) The court standard as in claim 4 further comprising: a shock
absorbing pad positioned within a bottom portion of the floor tube
to cushion the contained tube upon retraction; and a movable floor
cover attached to the floor tube and providing access to the
contained tubes.
6) The court standard as in claim 5 wherein a top portion of the
floor tube and each contained tube have an annular inner stop
portion, and wherein a lower portion of each contained tube has an
annular outer guide portion having a thickness comparable to the
inner stop member, said outer guide portion coming into contact
with a respective stop member when the contained tube is fully
upwardly extended.
7) The court standard as in claim 6 further comprising a top and
innermost cylindrical member having a lower end portion having an
annular outer guide portion and an upper portion adapted for
reception of the net.
8) The court standard as in claim 2 further comprising a winch
which is releasably attachable to a contained tube and wherein the
top and innermost cylindrical member further comprises a top pulley
so that a net cable may be drawn over the pulley and tightened with
the winch.
9) The court standard as in claim 4 further comprising a biased
rocker latch incorporated into each contained tube and configured
so that when the contained tube is fully elevated the latch will
engage.
10) The court standard as in claim 9 wherein each contained tube
comprises a pair of rocker latches positioned opposite each other
so that the latches may be squeezed together for release, and
wherein each rocker latch pivots on a pin in an elliptical hole so
that the weight carried by the contained tube is partially carried
by the rocker latch rather than entirely by the pin.
11) The court standard as in claim 4 wherein the inner members
further comprise a peripheral seal to trap air within the inner
tubes to result in an air-cushioned retraction of the court
standard.
12) The court standard as in claim 1 further comprising: an
alignment groove incorporated into an exterior surface of the
contained tube; and an alignment pin attached to an interior
surface of the floor tube, the alignment pin in sliding
communication with the alignment groove.
13) A method of erecting a court standard and supported net above a
gymnasium floor comprising the following steps: (a) providing a
court standard having an embedded upright floor tube having a top
end portion which is nominally in alignment with the gymnasium
floor; a contained tube closely and slidably positioned within the
floor tube; and releasable lock means to maintain the contained
tube at a selected height above the floor; (b) elevating the
contained tube to a desired height; (c) releasably locking the
contained tube at the selected height above the floor; and (d)
attaching the net to the court standard; thereby avoiding the task
of carrying the court standard from storage.
14. The method of erecting a court standard of claim 13, where step
(b) further comprises the steps of: (b1) applying pneumatic power
into the embedded upright floor tube.
15) The method of claim 14, where the court standard further
comprises: a lockable split ring adapted to engage around the top
and innermost cylindrical member to maintain the net at a selected
height.
16) The method of claim 15 where step (c) further comprises the
step of: (c1) locking the split ring onto the innermost cylindrical
member to maintain the net at the selected height.
17) The method of claim 15 where step (c) further comprises the
step of: (c2) releasably attaching a winch to the contained tube;
(c3) releasably attaching a top pulley to the top of the innermost
cylindrical member; (c4) stringing a net cable over the pulley; and
(c5) tightening the net with the winch.
18) The method of claim 13 where step (c) further comprises the
step of: (c1) automatically engaging at least one biased rocker
latch when the contained tube is fully elevated.
19. The method of storing a court standard, comprising the steps
of: (a) removing an attached winch from a contained tube; (b)
removing a top pulley from an innermost contained tube; and (c)
releasing all biased rocker latches.
Description
PRIORITY DATA
[0001] This application is a Continuation in Part of U.S. Patent
application Ser. No. 10/714,094 filed on Nov. 17, 2003, entitled
"Retractable Telescoping Court Standard" and is hereby incorporated
by reference.
FIELD OF THE INVENTION
[0002] This invention relates to net support standards used in
gymnasiums. More particularly this invention relates to net a
support standard which telescopes down to a fraction of its
extended height and then retracts below floor grade for
storage.
BACKGROUND OF THE INVENTION
[0003] Most gymnasiums are used for many and all indoor sporting
activities. A school gymnasium is typically continuously scheduled
for different activities each hour. If volleyball, tennis, or
badminton are played it is first necessary to access a storage room
and carry the net standards from the storage room to a central
portion of the gymnasium where they will be used. Before the
conclusion of the scheduled time the standards must be removed and
returned to the storage room so the gymnasium will be cleared and
available for the next scheduled event. These standards are heavy.
Generally, arriving early to access them in storage and lug them to
position and, staying late to lug them back to storage, is one of
the least preferred aspects of coaching.
[0004] One problem with court standards is providing accessible
storage for them. A partial solution to this problem is to provide
height adjustable standards which may be adjusted to the varying
heights required for volleyball, tennis, or badminton. One problem
with using a height adjustable standard is that the multipurpose
standard is substantially heavier. What is needed is a standard
which is adjustable for height and which can be conveniently stored
beneath the floor on the location where it is used.
SUMMARY OF THE INVENTION
[0005] The retractable telescoping court standard includes an
embedded upright floor tube having a top end portion which is
nominally in alignment with the gymnasium floor, a contained tube
closely and slidably positioned within the floor tube, and a
releasable lock means to maintain the contained tube at a selected
height above the floor. In one embodiment, there are a plurality of
contained tubes, and each contained tube is closely and slidably
positioned within a tube therebelow.
[0006] A top portion of the floor tube and each contained tube has
an annular inner stop portion. The lower portion of each contained
tube has an annular outer guide portion having a thickness
comparable to the inner stop member. The outer guide portion
contacts its respective stop member when the contained tube is
fully upwardly extended.
[0007] A method of erecting a court standard and supported net
above a gymnasium floor includes the steps of: providing a court
standard as described above; elevating the contained tube to a
desired height; releasably locking the contained tube at the
selected height above the floor; and attaching the net to the court
standard. The task of carrying the court standard from storage is
eliminated and setup time is substantially reduced.
[0008] Various other objects, advantages and features of this
invention will become apparent to those skilled in the art from the
following description in conjunction with the accompanying
drawings.
FIGURES OF THE INVENTION
[0009] FIG. 1 is a perspective view of a retractable telescoping
court standard showing a court standard supporting one end portion
of a net, in accordance with the invention;
[0010] FIG. 2 is a plan view of the retractable telescoping court
standard showing a floor plate having a hinged lid, in accordance
with the invention;
[0011] FIG. 3 is an enlarged cross sectional view of two contained
tubes and the upright floor tube for the retractable telescoping
court standard, in accordance with the invention;
[0012] FIG. 4 is a perspective view of a rocker arm mechanism for
the retractable telescoping court standard, in accordance with the
invention;
[0013] FIG. 5 is a partial cross sectional view of the retractable
telescoping court standard, in accordance with the present
invention; and
[0014] FIG. 6 is a disassembled view of the retractable telescoping
court standard, in accordance with the present invention.
[0015] The following is a discussion and description of the
preferred specific embodiments of this invention, such being made
with reference to the drawings, wherein the same reference numerals
are used to indicate the same or similar parts and/or Structure. It
should be noted that such discussion and description is not meant
to unduly limit the scope of the invention.
DETAILED DESCRIPTION OF THE INVENTION
[0016] Turning now to the drawings, FIG. 1 shows a perspective view
of a court standard 20 supporting one end portion of a net 18. Most
generally, the court standard 20 for positioning a net 18 above a
gymnasium floor 16 comprises: an embedded upright floor tube 22
having a top end portion which is nominally in alignment with the
gymnasium floor 16; a contained tube 24 which is closely and
slidably positioned within the floor tube 22; and a releasable lock
means 26 to maintain the contained tube 24 at a selected height
above the floor 16. In one embodiment, there are a plurality of
contained tubes 24. Each contained tube 24 is closely and slidably
positioned within a tube 24 or 22 therebelow.
[0017] A pneumatic supply line 70 supplies pneumatic power from a
pneumatic supply to the embedded upright floor tube 22. Thus
pneumatic power can be used to raise the contained tube or tubes 24
to the appropriate height. A pneumatic toggle switch 72 is
incorporated into the pneumatic supply line 70 to control the flow
of pneumatic power into the embedded upright floor tube 22. In one
position, the switch 72 permits pneumatic power to flow to the
embedded upright floor tube 22. In another position, the switch 72
stops the flow of pneumatic power. In another embodiment, the
switch 72 has a third position to release pneumatic pressure from
the upright floor tube 22 and the contained tube or tubes 24, to
controllably lower the contained tube or tubes 24 into the upright
floor tube 22. The switch 72 may be positioned on the floor cover
32 beneath the cover plate 34.
[0018] In one embodiment, the court standard 20 further comprises a
shock absorbing pad 30 positioned within a bottom portion of the
floor tube 22 to cushion the contained tube 24 upon retraction.
Most preferably the pad 30 is made of rubber. The releasable lock
means 26 is a lockable split collar 28.
[0019] FIG. 2 is an enlarged view of the floor cover 32. The plate
34 covers a central opening and is movable, but can be attached
with a hinge 36. A pneumatic toggle switch 72 may be incorporated
into the floor cover 32 beneath the cover plate 34.
[0020] FIG. 3 is an enlarged cross sectional view showing how two
contained tubes 24 and the upright floor tube 22 interlock. A top
portion of the floor tube 22 and each contained tube 24 has an
annular inner stop portion 40. A lower portion of each contained
tube has an annular outer guide portion 42 having a thickness
comparable to the inner stop member 40. The outer guide portion 42
comes into contact with a respective stop member 40 when the
contained tube 24 is fully upwardly extended. The outer guide
portion 42 also limits the amount of tilting or sideways deflection
of the contained tubes 24. Each of the contained tubes 24 includes
a port or aperture 76 to permit pneumatic power to enter each
contained tube 24 and lift each of them. Referring back to FIG. 1
the court standard 20 most preferably has a top and innermost
cylindrical member 44 with a lower end portion that has an annular
outer guide portion 42, like the contained tubes 24, and an upper
portion adapted to receive the net 18.
[0021] A winch 46 can be releasably attached to a contained tube 24
(see FIG. 1), and a top pulley 48 can be removably attached atop
the top and innermost cylindrical member 44. The pulley may also be
permanently fixed to the top member 44 to be stored inside the
floor tube 22. A net cable 50 is be drawn over the pulley 48 and
tightened with the winch 46.
[0022] FIG. 4 is a perspective view of a rocker latch 28 which
utilizes a pin 54 in an elliptical hole 56 so that the load is
partially carried by the rocker latch 52 rather than entirely by
the pin 56. Under a load the bottom of the rocker latch 28 bears
against the top edge of the contained tube 24 immediately below and
against the recess. The top of the rocker latch 28 bears against
its storage recess 74 in the contained tube 24. The releasable lock
means 26 on the contained tubes 24 comprises a biased 27 rocker
latch 28 configured so that when the contained tube is fully
elevated the latch will automatically engage. In another
embodiment, there are two opposite rocker latches 28 so that the
latches 28 may be squeezed together for release. As stated above,
each rocker latch 28 pivots on a pin 54 in the elliptical hole 56
so that the load carried by the contained tube 24 is partially
carried by the rocker latch 28 rather than entirely by the pin
54.
[0023] FIG. 5 shows a cross-sectional view of the peripheral lip
seal 60 to trap air within the inner members 24 to enable pneumatic
lifting and air-cushioned retraction of the court standard 24. The
standard is able to collapse back into the floor tube 22 when the
latches 28 are released. The seal 60 is attached around the
perimeter of the annular outer guide 42 portion of the contained
tube 24. The seal 60 is flexible to provide a substantially
airtight seal. The seal 60 contains the pneumatic power and allows
the contained tubes 24 to extend and collapse with minimal
friction.
[0024] FIG. 6 shows a disassembled view of the contained tubes 24
and the top tube 44 for the retractable telescoping court standard
20. The seal 60 is visible on the annular outer guide 42 portion of
each contained tube 24 and top tube 44. In one embodiment, the
tubes 24, 44 include an alignment groove 78. The interior of each
of the contained tubes 24 and the floor tube 22 include an
alignment pin (not shown) that engages the groove 78 in the
adjacent contained tube 24 or top tube 44. The grooves 78 prevent
the tubes 24, 44 from twisting.
[0025] The court standard 20 is easily raised and lowered. The
contained tubes 24 are elevated to a desired height, the contained
tubes 24 are releasably locked at the selected height above the
floor 16; and the net 18 is attached to the court standard 20. This
system eliminates the task of carrying the court standard 20 from
storage. Many variations on this basic method are possible. For
example, pneumatic power may be introduced into the embedded
upright floor tube 22. This pneumatic power must be controlled to
some degree in order to lift the contained tubes 24 out of the
floor tube 22 and each other. Thus a seal 60 is located between
each adjacent floor tube 22 and contained tube 24 to keep the
pneumatic power inside them.
[0026] The releasable locks include a lockable split ring 26
adapted to engage around the top and innermost cylindrical member
44 to maintain the net 18 at an appropriate height. Each contained
tube and the upper cylinder 44 includes at least one biased rocker
latch 28 which automatically deploys as each contained tube 24
reaches full extension. A plurality of rocker latches 28 can be
used on each contained tube 24 and the top tube 44 to more evenly
distribute the load.
[0027] When the standards 20 are at the proper height, the user can
attach a winch 46 to a contained tube 24 and route a net cable 50
over a top pulley 48 at the top of the innermost cylindrical member
44. The other end of the net cable 50 is attached to the standard
20 without the winch. A hook or other releasable means may be used.
The net cable 50 is tightened with the winch 46.
[0028] The standard 20 is easily stored as well. First, the net
cable 50 is loosened and the net 18 removed. The winch 46 is
removed. Finally, all of the biased rocker latches 28 are released.
As the rocker latches 28 are released, the contained tubes 24 will
drop down into the floor tube 22. The seals 60 control the
pneumatic power when the contained tubes 24 are lifted, but also
slow the descent of the contained tubes 24 to minimize the rate of
descent and the risk of damage to the contained tubes 24 or the
floor tube 22.
[0029] In one embodiment of the invention there are five
interlocking contained tubes 24, as well as the innermost cylinder
44. Each of the contained tubes 24 are about two feet in length and
can be made from anodized aluminum or other suitable materials. The
standards 20 may be covered with pads (not shown) in various school
colors.
[0030] To install the court standard 20 a 6'' diameter hole is
drilled through and beneath the concrete floor 16 to a total depth
to permit the top of the floor tube 22 to be flush with the surface
of the floor, about 28 1/2''. The floor tube 24 which has an
outside diameter of about 4 1/2'' is then placed into position and
set in concrete within the drilled 6'' diameter hole. To retrofit
an existing removable standard which is stored off location it is
as easy as enlarging the existing hole to the above specified size,
and then concreting the floor tube 24 within that enlarged
hole.
[0031] While the invention has been described with preferred
specific embodiments thereof, it will be understood that this
description is intended to illustrate and not to limit the scope of
the invention, which is defined by the following claims.
* * * * *