Patent ID: 8409058

Claim:
An exercise device, comprising: (a) a frame, (b) a first upper leg link and a second upper leg link, each pivotally coupled to the frame, (c) a first lower leg link pivotally coupled to the first upper leg link and a second lower leg link pivotally coupled to the second upper leg link, each lower leg link including a foot support, (d) a first transfer system movably coupled to the frame and including (i) a first transfer ember coupled to the first upper leg link, (ii) a second transfer member coupled to the second upper leg link, and (iii) a pivot bar pivotally mounted to the frame between a first end and a second end thereof with the first end coupled to the first transfer member and the second end coupled to the second transfer member, and (e) a second transfer system movably coupled to the frame and including: (i) a laterally extending rotatable interconnection member having a left end and a right end, (ii) a right-side linkage, including at least: (A) a right-side third transfer member pivotally coupled at a primary alpha pivot point to the interconnection member proximate the right end of the interconnection member, (B) a right-side fourth transfer member pivotally coupled at a primary beta pivot point to the first lower leg link, and (C) a right-side transfer coupling pivotally coupled to the right-side third transfer member at a primary gamma pivot point spaced along the length of the right-side third transfer member from the primary alpha pivot point, pivotally coupled to the right-side fourth transfer member at a primary delta pivot point spaced along the length of the right-side fourth transfer member from the primary beta pivot point, and pivotally mounted to the frame at a primary epsilon pivot point intermediate the primary gamma and primary delta pivot points on the right-side transfer coupling, and (iii) a left-side linkage, including at least: (A) a left-side third transfer member pivotally coupled at a secondary alpha pivot point to the interconnection member proximate the left end of the interconnection member, (B) a left-side fourth transfer member pivotally coupled at a secondary beta pivot point to the second lower leg link, and (C) a left-side transfer coupling pivotally coupled to the left-side third transfer member at a secondary gamma pivot point spaced along the length of the third transfer member from the secondary alpha pivot point, pivotally coupled to the left-side fourth transfer member at a secondary delta pivot point spaced along the length of the left-side fourth transfer member from the secondary beta pivot point, and pivotally mounted to the frame at a secondary epsilon pivot point intermediate the secondary gamma and secondary delta pivot points on the left-side transfer coupling, (f) whereby movement of the first lower leg link causes movement of the second lower leg link irrespective of movement of the upper leg links.