Hydraulic exerciser

Claim 1

An exerciser for a human user to perform physical exercising, comprising: human exercising force connection means for the human user to physically undergo exercising force in the performing of physical exercising for development of the human muscles, a flexible, continuous, load bearing line attached to two spaced locations on said exercising force connection means and extending away from said exercising force connection means; a hydraulic fluid cylinder with an incompressible hydraulic liquid fluid therein associated with said exercising force connection means having a moveable piston extending out of and moveable longitudinally in said cylinder in contact with said hydraulic fluid; a first pair of sheaves located in association with a first end of said cylinder, and a second pair of sheaves located in association with the other, opposite end of said cylinder, at least one of said second pair of sheaves being mounted on and carried by said piston, said flexible, load bearing line extending from a first location on said exercising force connection means toward said cylinder and down around one sheave of said first pair, then over to and around one of the sheaves of said second pair, then back over and around the other of the sheaves of said first pair, then back over and around the other of the sheaves of said second pair, and then extending back to the other of said two locations on said exercising force connections means, force applied to said exercising force connection means in a direction away from said cylinder causing said piston to move into said cylinder.