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A portable exercise apparatus includes a support frame having a base mountable under a chair to hold the base in a stationary position with a user seated on the chair and an upright standard mounted upon the base, a shaft mounted to an upper end of the upright standard and having opposite ends exten

A portable exercise apparatus includes a support frame having a base mountable under a chair to hold the base in a stationary position with a user seated on the chair and an upright standard mounted upon the base, a shaft mounted to an upper end of the upright standard and having opposite ends extending from opposite sides thereof, a pair of arms disposed on opposite sides of the upright standard with each arm at one end mounted to one end of the shaft for rotatably mounting the arm to the upright standard, a pair of pedals each mounted to the other end of each of the arms for engagement by a user to create the force necessary to rotate the arms relative to the upright standard, and a resistance generating and adjusting mechanism disposed on the ends of the shaft at the opposite sides of the upright standard and engaged with the one ends of the arms and being operable to generate and selectively adjust a level of resistance to rotation of the pair of arms relative to the upright standard in response to rotation of the arms. The resistance generating and adjusting mechanism includes at least one conical-shaped spring washer received over one of the shaft ends and being respectively compressible and expandable for correspondingly increasing and decreasing the level of resistance to rotation of the arms by the user.

대표청구항 ▼

[ I claim:] [1.] A portable exercise apparatus, comprising:(a) a support frame having a base mountable upon a support surface under a chair to hold said base in a stationary position with a user seated on the chair, said support frame also having an upright standard mounted at a lower end upon said

[ I claim:] [1.] A portable exercise apparatus, comprising:(a) a support frame having a base mountable upon a support surface under a chair to hold said base in a stationary position with a user seated on the chair, said support frame also having an upright standard mounted at a lower end upon said base and having an upper end spaced above said base, said support frame further having a pair of balancing members mounted upon said base and protruding above said base for engagement of the chair, said lower end of said upright standard being disposed between said balancing members, said base being disposed below and mounted to undersides of said balancing members and extending outwardly in one direction from said upright standard for receiving thereon the chair and together with said balancing members providing a means for capturing the chair so as to hold the chair in place to prevent backward movement thereof during use of the apparatus;(b) an elongated shaft mounted to said upper end of said upright standard and having a pair of opposite end portions extending from opposite sides of said upright standard;(c) a pair of elongated arms each having a pair of opposite ends and being disposed on opposite sides of said upright standard, each of said arms at a first of said opposite ends thereof mounted to one of said opposite end portions of said shaft for rotatably mounting each arm to said upright standard;(d) a pair of members each mounted to a second of said opposite ends of a respective one of said arms for engagement by a user to create a force necessary to rotate said arms relative to said upright standard; and(e) a resistance generating and adjusting mechanism disposed on said opposite end portions of said shaft at said opposite sides of said upright standard and engaged with said first of said opposite ends of said arms and being operable to generate and selectively adjust a level of resistance to rotation of said arms relative to said upright standard in response to rotation of said arms.