Patent ID: 7413534

Claim:
An exercise system for use by an individual and including (a) an upwardly extending neck; (b) a sleeve mounted on said neck and displaceable along said neck between at least two operative positions; (c) a pressurized chamber mounted on said sleeve; (d) a piston mounted on said sleeve and moveable between at least a primary and a secondary operative position in said chamber; (e) at least one cam unit pivotally mounted on said sleeve and including at least one operative cam surface ( 317 A, 317 B); (f) a cam follower operatively associated with said piston and contacting different portions of said cam surface when said cam unit pivots on said sleeve; (g) at least a first displaceable arm ( 312 , 335 ) mounted on said cam, said arm, when displaced, pivoting said cam unit to cause said cam unit to displace said cam follower and said piston.