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US 4,231,568 AGranted
Exercise machine with spring-cam arrangement for equalizing the force required through the exercise stroke
OwnerRobert Q. Riley, David L. Careyinventors
Life of this patent
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Abstract
An exercise machine with a user-actuated force-applying member utilizes a spring to resist the physical force applied by the user. The physical force is applied to the spring through a cam arrangement which equalizes the force required throughout the exercise stroke.
Claims1
In an exercise machine which includes
- a frame,
- a force-applying member carried by and movable with respect to said frame through an exercise stroke in response to physical force exerted thereon by a user, and
- spring means carried by said frame to resist the physical force applied by the user through said exercise stroke,
- the improvement comprising:
- force equalizing means, operatively associated with said spring means and said force-applying member, for equalizing the physical force required to move said force-applying member throughout said exercise stroke against the increased force required to elongate the spring means when said force-applying member is moved in the direction to elongate the spring means.
2 more elements
Dependencies are inferred from the claim text.