Patent ID: 8864636

Claim:
Resistance training exercise apparatus comprising a load system for providing resistance comprising a vacuum load assembly comprising an axially extending tubular housing having an inner cylinder wall extending axially from an axial end wall, a piston in said housing and engaging said cylinder wall in sealing relation and axially slidable therealong, a connector link extending from said vacuum load assembly and coupled to a user-engaged exercise member, said piston defining a chamber in said housing between said piston and said end wall, said piston moving in a first axial direction away from said end wall to increase the volume of said chamber, said piston moving in a second opposite axial direction toward said end wall to decrease the volume of said chamber, wherein movement of said piston in said first axial direction creates vacuum in said chamber, which vacuum provides load resistance resisting exercise movement of said user-engaged exercise member, said connector link comprising an adjustment mechanism controlling effective vector force between said vacuum load assembly and said user-engaged exercise member; wherein said adjustment mechanism includes a user-controllable adjustment assembly adjustably varying said vector force between said vacuum load assembly and said user-engaged exercise member; wherein said adjustment mechanism comprises a gym cable having a first end coupled to said user-engaged exercise member, and having a distally opposite second end, and a cylinder cable having a first end coupled to said vacuum load assembly, and having a distally opposite second end.