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US 4,063,726 AGranted
Electronically controlled hydraulic exercising system
OwnerRobert J. Wilsoninventor
Life of this patent
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Abstract
An electronically controlled hydraulic exercising system employing a fluid actuated piston which is controlled by a device which automatically and selectively proportions in varying amounts the exercise resistance in each of two directions of movement of the piston. The device automatically controls the resistance by the use of electronic flip flop type logic network.
Claims5
An exercise apparatus selectively operable in a number of specific exercising modes comprising in combination:
- a fluid actuated piston means for selectively providing in each of two opposite directions exercise resistance proportional to the setting of a control means,
- a control means for varying the operation of said piston means to selectively provide in each of two directions exercise resistance,
- said control means comprising a logic network includng a flip flop for causing said piston means to reciprocate automatically between two predetermined limits, and
- means for automatically and selectively proportioning in varying amounts the exercise resistance in each of said two directions.
1 more element
Dependencies are inferred from the claim text.