Exercise devices – Involving user translation or physical simulation thereof – Stair climbing
Reexamination Certificate
2000-06-12
2001-12-18
Crow, Stephen R. (Department: 3764)
Exercise devices
Involving user translation or physical simulation thereof
Stair climbing
C482S057000
Reexamination Certificate
active
06331153
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a portable leg exercising device, particularly one that is compact enough to be used while traveling in a vehicle, airplane or train.
The diverse types of leg exercising devices currently available in commercial gymnasiums are truly astounding. There are typically more than one type of machine available for exercising each specific muscle of the leg. These machines are large and, therefore, not portable; they are also very expensive.
There have been several suggestions in the prior art of leg exercising devices characterized as “portable”. However, these devices occupy substantial horizontal space and often require that the user lay on the floor. See, for example, U.S. Pat. No. 5,279,530.
Even where the user can sit in a chair some such devices still occupy substantial horizontal space. See, for example, U.S. Pat. No. 4,946,162.
U.S. Pat. No. 5,299,995 describes a leg exercising device that can be used while sitting in a chair at a desk. While the device is more compact than many other “portable” leg exercising devices, it is not clear that the device is intended to be carried about, and the construction of the device is complicated.
SUMMARY OF THE PRESENT INVENTION
It is an object of the present invention to provide a leg exercising device that is truly portable, i.e., can be easily carried about, and can be used by persons while traveling in automobiles, airplanes, buses, trains, etc.
It is a further object of the present invention to provide a leg exercising device that is simple and inexpensive to construct.
The portable leg exercising device of the present invention includes a frame having a top, bottom, and two sides. An upper roller subassembly is rotatably positioned adjacent the top of the frame, and a lower roller subassembly is rotatably positioned adjacent the bottom of the frame. A continuous belt extends around and between the two roller subassemblies. Pedal subassemblies are attached to opposite sides of the belt to permit a user to place their feet therein and to alternately push down against the pedals with their feet.
REFERENCES:
patent: D. 348492 (1994-07-01), Konatski, II
patent: 4946162 (1990-08-01), Lubie
patent: 5180351 (1993-01-01), Ehrenfried
patent: 5279530 (1994-01-01), Hess
patent: 5295928 (1994-03-01), Rennex
patent: 5299995 (1994-04-01), Ko
patent: 2012599A (1978-08-01), None
Crow Stephen R.
Howard Robert E.
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