Patent ID: 7169089
Filing Date: 2007-01-30
Classification: A63B

Abstract:
1. A stationary exercise apparatus comprising: a frame; a first crank system having a left side and a right side, said first crank system coupled to the frame; a second crank system having a left side and a right side, said second crank system coupled to the frame; a left cam system having a left cam surface, said left cam system pivotally coupled to the left side of the first crank system and coupled to the left side of the second crank system; a right cam system having a right cam surface, said right cam system pivotally coupled to the right side of the first crank system and coupled to the right side of the second crank system; a left pivotal linkage assembly comprising a left cam follower and a left foot member having a left foot pad; and a right pivotal linkage assembly comprising a right cam follower and a right foot member having a right foot pad, wherein the left pivotal linkage assembly is coupled to the left side of the first crank system by engagement of the left cam surface with the left cam follower and the right pivotal linkage assembly is coupled to the right side of the first crank system by engagement of the right cam surface with the right cam follower so as to allow a substantially instantaneously variable stride, and wherein the apparatus is configured such that the foot of the user may move in a substantially closed path.