Patent ID: 7491159
Filing Date: 2009-02-17
Classification: A63B

Abstract:
1. A resistance assembly for an exercise apparatus comprising: an elongate vertical support member extending along a support member axis; a first, elongate exercise resistance lever member extending along a longitudinal axis from a pivot end to a distal exercise end, said pivot end attached to said vertical support member at a lower pivotal attachment point along said support member axis; a second, elongate exercise resistance lever member extending from a linkage end along a longitudinal axis to a distal exercise end and attached to said vertical support member at said lower pivotal attachment point along said support member longitudinal axis, said attachment point lying on said second exercise lever member longitudinal axis between said linkage end and said exercise end; an upper linkage member extending along a longitudinal axis from a linkage end to a resistance end and mounted upon said vertical support member at an upper pivotal attachment point on said support member axis above said lower pivotal attachment point, said upper pivotal attachment point lying on said upper linkage member longitudinal axis between said linkage end and said resistance end; a vertical linkage member extending from a lower vertical linkage member end to an upper linkage member end, said lower vertical linkage member end attached to said second resistance lever member linkage end at a lower vertical linkage member attachment point and said upper vertical linkage member end attached to said upper linkage member linkage end at an upper vertical linkage member attachment point, said upper and lower vertical linkage member attachment points separated one from the other generally by a resistance member spanning distance; a length change resistance member extending from an upper mounting end along a longitudinal axis to a lower mounting end, said upper mounting end mounted upon said upper linkage member resistance end and said lower mounting end mounted upon said first exercise resistance lever at a mounting point on its longitudinal axis lying beyond said pivot end in the direction of said distal exercise end; and, an exercise engagement lever member including a pivot end attached to said vertical support member and selective exercise lever member engagement means for selectively engaging either of said first exercise resistance lever member at a point along its longitudinal axis beyond said pivot end in the direction of said distal exercise end or said second exercise resistance lever member at a point along its longitudinal axis beyond said lower support member pivotal attachment point in the direction of said distal exercise end.