Constant tension exercise device

Details Constant tension exercise device Constant tension exercise device

1995-03-27

1997-10-28

Cheng, Joe

Exercise devices

User manipulated force resisting apparatus, component...

Utilizing weight resistance

482137, 482138, A63B 2106

Patent

active

056812477

ABSTRACT:
An exercise device has a support frame and a lever arm attached to the support frame and pivotably movable between a rest position, wherein the lever arm hangs downwardly relative to the support frame, and an extended position, wherein the lever arm is pivoted upwardly from its rest position. A range of motion (ROM) block is rigidly attached to the lever arm, and pivots with the lever arm. The orientation of the ROM block relative to the lever arm can be selectively varied.
A tackle is attached to the ROM block to provide an opposing force to motion of the lever arm from the rest position to the extended position. This tackle includes two pulleys that are attached to the ROM block. The tackle also includes a substantially taut cable that extends between the pulleys, and the cable is connected to a mass. The position of the pulleys relative to the lever arm is established such that the magnitude of the force required to move the lever arm toward the extended position is approximately equal to the magnitude of the weight of the mass.

REFERENCES:
patent: 4627616 (1986-12-01), Kauffman
patent: 4792135 (1988-12-01), Chin-Sen
patent: 4844456 (1989-07-01), Habing et al.
patent: 4854578 (1989-08-01), Fulks
patent: 4898381 (1990-02-01), Gordon
patent: 4915377 (1990-04-01), Malnke et al.
patent: 4982955 (1991-01-01), Heasley
patent: 5263915 (1993-11-01), Habing

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