A compound abdominal and upper body exercising device having an outer frame, an inner mechanism that is pivotally connected within the outer frame and on which a user kneels to initiate the exercise, a linkage system between the outer frame and the inner mechanism that interconnects an actuating assembly...http://www.google.ca/patents/US7963895?utm_source=gb-gplus-sharePatent US7963895 - Compound abdominal device
