Exercise machine

Exercise devices – User manipulated force resisting apparatus – component... – Utilizing resilient force resistance

Patent

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Details

482123, 482133, A63B 2100

Patent

active

056536674

ABSTRACT:
An exercise machine for use in exercising a user's calf muscles includes a frame having a ground-contacting support, first and second spaced-apart knee-engaging pads which are movable in a vertical plane, a seat, and springs resisting the upward movement of the pads. The pads are each located at the end of a lever arm which is rotatably mounted to the frame at an opposite end. The springs are mounted on slidable sleeves, allowing a user to adjust the resistive force. A handle engages each arm and is movable between a first position in which the arm is in a raised, locked position, to a second position in which the pad engages the knee of the exerciser. A user places the balls of his feet on a platform and presses the pads upwardly with his knees against the springs to exercise his calf muscles.

REFERENCES:
patent: 935854 (1909-10-01), Linerode
patent: 2356260 (1944-08-01), Maxwell
patent: 4022463 (1977-05-01), Scott, Jr.
patent: 4556216 (1985-12-01), Pikanen
patent: 4811946 (1989-03-01), Pelczar
patent: 5284465 (1994-02-01), Homan, Jr.
Cybex Strength Systems brochure p. 2 Seated Calf Station Dec. 1989.

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