Patent ID: 8122694

Claim:
A suspension system for use with a crop harvesting header comprising: a frame carrying a structure movable about an endless path to deliver a crop to the header, the frame having opposed ends, the opposed ends are pivotably connected to a lower portion of the header at a first pivot and the opposed ends are further pivotally connected to an upper portion of the header at a second pivot, the first and second pivots are substantially aligned along a common substantially vertical axis, each end of the frame independently movable between a first angle between the frame and the header and a second angle between the frame and the header; and a first suspension member and a second suspension member, each suspension member connected between the frame and the header to provide a substantially constant force to the frame between the first and second angles, wherein the first suspension member has one end fixed at the second pivot point and further wherein the second suspension member has an end substantially aligned with the axis.