U.S. patent number 3,589,715 [Application Number 04/765,389] was granted by the patent office on 1971-06-29 for convertible foldable exercise cot.
Invention is credited to Joseph W. Mark, Morris Mark.
United States Patent |
3,589,715 |
Mark , et al. |
June 29, 1971 |
CONVERTIBLE FOLDABLE EXERCISE COT
Abstract
A foldable exercising cot having an articulated body support
section and a center joint brace releasably fastened to a leg
member for use in a rigid chair configuration or as a slant board,
and spring means for holding the brace aside for use of the cot as
an exercising cot; and a hinged support leg of greater span than
the body support section of the cot releasably secured to the other
leg member for use as an exercising cot or a rigid chair and
releasable for use of the cot as a slant board or a beach chair,
the releasable leg being pivotable to a pullup bar position.
Inventors: |
Mark; Morris (Los Angeles,
CA), Mark; Joseph W. (Gardena, CA) |
Family
ID: |
25073436 |
Appl.
No.: |
04/765,389 |
Filed: |
October 7, 1968 |
Current U.S.
Class: |
482/142; 5/634;
297/316 |
Current CPC
Class: |
A63B
23/03575 (20130101); A63B 2208/0252 (20130101); A63B
23/0211 (20130101); A63B 2210/50 (20130101) |
Current International
Class: |
A63B
23/02 (20060101); A63B 23/00 (20060101); A63b
023/02 () |
Field of
Search: |
;272/58 ;5/67
;297/316,296 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Pinkham; Richard C.
Assistant Examiner: Dror; Richard
Claims
Having disclosed the invention and the best mode contemplated by us
for making or using it, we claim:
1. A convertible exercising cot comprising, in combination:
first and second body supporting sections pivotally interconnected
to form a cot hinged intermediate the ends thereof;
first and second leg members pivotally attached to the respective
first and second sections intermediate their respective ends and
pivotally interconnected to support the cot;
a joint brace pivotally attached to the cot between the points of
attachment thereto of the leg members and detachably connected to
the second leg member at a point remote from its attachment to the
first section; and
means spaced from the pivotal attachment of said leg members to
said sections for securing the joint brace in a position detached
from the second leg member.
2. A cot according to claim 1 wherein the means for securing the
joint brace is a spring.
3. A cot according to claim 1 and comprising catch means for
releasably securing the joint brace in a support position.
4. A cot according to claim 1 having a hook on the joint brace for
securing the joint brace in a support position and spring means for
holding the joint brace in said support position.
5. A convertible exercising cot comprising, in combination:
first and second body supporting sections pivotally interconnected
to form a cot hinged intermediate the ends thereof;
first and second leg members pivotally attached to the respective
first and second sections intermediate their respective ends and
pivotally interconnected to support the cot;
a joint brace attached to the cot between the points of attachment
thereto of the leg members, and adapted to vertically support the
joint;
said first leg member being pivotally attached to the first section
at the outsides thereof and of U-shape having a horizontal portion
and being of sufficient length to clear the end of the first
section whereby, when the cot is in a slant board position
supported from the floor on the second leg member and the joint
brace, the first leg may be pivoted to a position above the first
section to constitute its horizontal portion a pullup bar.
6. A cot according to claim 5 wherein the first and second body
supporting sections comprise first and second U-shape frame members
pivotally interconnected at their open ends and wherein each of
said leg members is attached to the respective side portions of the
U-shape frame members by a saddle supported hinge having a saddle
support portion affixed to said side portion and a hinge portion
supported outwardly therefrom and attached adjacent the end of a
leg member.
7. A cot according to claim 6 comprising a body supporting fabric
secured to the respective side portions of each of the U-shape
frame members and passing between said side portions and each of
said saddle support portions.
Description
This invention relates to a foldable exercising cot which is
convertible to chair and slant board configurations.
Exercising cots are known having articulated body support sections
which are supported between the articulated joint and the ends of
the sections, as illustrated in U.S. Pat. to Goodman et al. No.
2,938,572 and Sellner, No. 3,043,591. Such cots are difficult to
enter for use as an articulated cot because of the tendency to fold
upon the person attempting to enter upon the cot. They also are of
limited utility as exercise devices and are not easily convertible
to other uses.
This invention provides an exercise cot which may be easily
converted to a rigid chair configuration before entering on it and
which is easily converted from a rigid chair configuration to a
flexible, articulated exercising cot by a person already occupying
it. It also provides an exercise cot which is easily converted to a
beach chair or slant board and which is provided with a leg which
is usable as a pullup bar in the slant board configuration. These
advantages are obtained with a construction having support legs
hingedly secured to the articulated body support portion in a
manner to allow easy replacement of the fabric and to provide
clearance between moving parts to minimize the hazard of pinched
fingers of the user. The cot is also easily foldable for carrying
or storage as a single unit, without removable frame members which
are subject to loss or damage when separated from the cot.
For further consideration of what is believed to be novel and
inventive, attention is directed to the drawings and the following
specification and claims describing a preferred embodiment of the
invention and the manner and process of making and using it.
FIG. 1 of the drawings is a side, elevational view of convertible
cot, according to the claimed invention, in a rigid chair
configuration.
FIG. 2 is a side, elevational view of the cot of FIG. 1 in a
flexible exerciser device configuration with an alternate position
shown in dashed lines.
FIG. 3 is a detail perspective of a special hinge and support
structure used in the cot of FIG. 1.
FIG. 4 is a side, elevational view of the convertible cot of FIG. 1
in a rigid slant board configuration with one of the leg members in
a pullup bar position, and a man shown in dashed lines using the
bar.
FIG. 5 is a perspective view of the convertible cot of FIG. 1 in a
beach chair configuration with a woman shown in the chair in dashed
lines.
FIG. 6 is a side view of the cot of FIG. 1 in folded configuration
for transportation or storage.
FIG. 7 is a front view of the retractable brace for converting the
cot from a rigid chair to an exerciser.
Referring to the drawings, a preferred embodiment of the invention
is shown in FIG. 1 having first and second body supporting sections
comprising a pair of U-shape tubular frame elements 11 and 12
joined at their open ends in pivotal connections by a pair of
hinges 13. A fabric 14, such as canvas, covers the tubular frame
elements at the respective sides thereof and stretches therebetween
to support a user's body. The fabric 14 is preferably short of the
ends 15, 16 of the tubular frame elements to allow room to grasp or
use such ends, as will appear.
The cot is supported on first and second leg members 17 and 18 at
points intermediate the articulated joint hinges 13 and the ends
15, 16 by hinges 21, 22, shown in greater detail in FIG. 3. Leg
member 18 is rigidly supported on the floor or ground by a tubular
U-shape leg support brace 23, the open end of which is pivotally
attached to the second leg member by a pair of hinges 19 for
folding and storage of the cot and by straps 24 fastened to the leg
member 18 by hinges 20 and the brace 23 to form a rigid triangular
truss. One of the fasteners for the strap 24 is an easily
releasable fastener such as a wing nut 25 or a snap fastener so
that folding of the brace for storage or carrying is facilitated.
The closed end of the brace 23 is provided with a catch or clip 26
for receiving the lower end of the first leg member 17.
To rigidly support the cot in a chair configuration as shown in
FIG. 1, a joint brace 27 is fastened at or near the hinges 13 with
a cross portion serving to maintain the hinge joints spaced whereby
to maintain the fabric taut. The brace 27 is provided with catch
loops 28 at its respective sides adapted to hook onto corresponding
hooks 31 on the leg brace 23. A spring 32 is fastened between the
side of the first frame element 11 and the joint brace by eyes 29,
30 to normally hold the catch loop 28 in the hook 31 when in a
chair configuration as shown in FIG. 1.
The spring 32 also facilitates conversion of the cot to an
exerciser configuration as shown in FIG. 2 while a person is
sitting in the cot, holding the released brace out of the way as
the cot is flexed about the pivotal hinges 21, 22, as shown in FIG.
2, from the lower position shown in dashed lines to the upper
position shown in solid lines. To convert the cot from the rigid
configuration of FIG. 1 to the articulated configuration of FIG. 2,
one sitting on the cot leans back slightly to relieve the hooks 31
of pressure of the loops 28 and with one hand moves the brace 27
out of the hooks 31. Further leaning back will raise the hinges,
and the brace 27 is then released to be held in retracted position
by the spring 32 as shown in FIG. 2.
Another form of exercise unit is obtained by lifting the first leg
17 from the leg brace while the joint brace is in the rigid hooked
position shown in FIG. 1. The hinge structure allows the first leg
to either lay on the floor converting the cot into a rigid slant
board or the leg may be swung completely around the end of frame
member 11 to an overhead position to constitute it a pullup bar as
shown in FIG. 4. In this configuration, a person may lie on the
slant board cot with toes hooked under the second frame horizontal
segment for situps or may use the horizontal portion of the first
leg for pullups as shown in FIG. 4.
The cot may be converted to a beach chair by moving the
spring-biased joint brace toward the second leg member from a slant
board configuration to swing the second body supporting section of
the cot to near vertical for use as a back support as shown in FIG.
5. It may also be folded into a compact carrying configuration
shown in FIG. 6 for minimum space storage.
The special hinge design shown in detail in FIG. 3 comprises a
cylindrical, or saddle, bracket 33 adapted to be fastened by sheet
metal screws through the fabric to a frame element 11 or 12. The
screws are easily removable for changing the fabric 14. The bracket
is fastened by a rivet 34 to a pivoted saddle 35 on the leg 17 or
18, spacing the frame element from the leg to avoid possible
pinching of fingers, and, because of the side mounting, allowing
the leg to clear the end of the frame element when moved to a beach
chair configuration shown in FIG. 5 or when moved to a pullup bar
position as shown in FIG. 4.
* * * * *