Patent ID: 6966872
Filing Date: 2005-11-22
Classification: A63B

Abstract:
1. An exercise apparatus for allowing the operator to perform sit-up movements comprising; a framework, said framework configured to be supported by a generally horizontal surface; a seat, said seat connected to said framework by a first frame pivot to support the lower torso of the operator; a seatback, said seatback connected to said framework by a second frame pivot to support the upper torso of the operator; a coupling link, said coupling link connected to said framework by a third frame pivot; a first connecting link, said first connecting link pivotally connected to said seat and said coupling link; a second connecting link, said second connecting link pivotally connected to said seatback and said coupling link; said coupling link, said first connecting link and said second connecting link forming a linkage to control the movement of said seatback relative to said seat; said seat configured to rotate relative to said framework about said first frame pivot when the lower torso of the operator applies force upon said seat whereby the movement of said seat causes a corresponding movement of said seatback to rotate about said second frame pivot as said linkage rotates about said third frame pivot.