Patent ID: 7686750

Claim:
An exerciser comprising: a seat; a frame adapted to support said seat in a position that is raised off a floor; a seat pivot pivotably connecting said seat and frame, said pivot located under said seat; an upper body arm adapted to engage the upper body of a user; an upper body arm pivot pivotably connecting said seat and said upper body arm; a lower body arm adapted to engage the lower body of a user, said lower body arm attached to said seat, wherein when said upper body arm is oriented in front of said user, a pushing force, applied to said upper body arm, causes an end of said seat to pivot downward, wherein said end of said seat that pivots downwards is the end furthest from the lower body arm; and a leverage bar attached beneath said seat to said upper body arm and a constraint mechanism adapted to constrain movement of said leverage bar with respect to said frame in at least one direction while not constraining movement in another direction; wherein said constraint mechanism comprises a first roller and a second roller, and said leverage bar is movably trapped between said first roller and said second roller.