Patent ID: 7686109

Claim:
A motorized vehicle comprising: a) a chassis supporting an engine and an endless track and having an operator platform; b) a framework mounted to said chassis including a drive sprocket coupled to said engine and a plurality of idler wheels and wherein said track is trained around said sprocket and idler wheels; and c) wherein said endless track includes a longitudinal rigid portion and a flexible pleated portion, wherein said pleated portion comprises a plurality of seriatim pleated members that longitudinally expand and contract to vary the contour of said track when placed under pressure, wherein drive lugs project from an interior surface of said center portion to engage said drive sprocket, wherein a plurality of ground engaging lugs transversely span and depend from external surfaces of said rigid and flexible portions, and wherein said pleated members are located to contact said chassis and flex with operator movements to vary the track contour and steer said vehicle.