04063726 is referenced by 70 patents and cites 7 patents.

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.

Title
Electronically controlled hydraulic exercising system
Application Number
5/680499
Publication Number
4063726
Application Date
April 26, 1976
Publication Date
December 20, 1977
Inventor
Robert J Wilson
8401 E. Cambridge, Scottsdale, 85257
AR, US
Agent
Warren F B Lindsley
IPC
A63B 21/00
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