Patent ID: 8205696

Claim:
A motorized vehicle comprising: a) a chassis supporting an engine and an endless track and having an operator platform and wherein a bottom surface of said chassis includes a contoured longitudinal pan; b) a framework mounted to said chassis including a drive sprocket coupled to said engine and a plurality of idler wheels, wherein said track is trained around said sprocket and idler wheels; and c) wherein said endless track includes a longitudinal center portion and adjoining first and second pleated portions, wherein said first and second pleated portions respectively comprise a plurality of pleats that transversely extend and rise from opposed lateral sides of said center portion toward longitudinal peripheral edges of said track, 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 track, and wherein said pleats are mounted to contact said longitudinal pan and flex to vary the track contour under pressure induced on said pan and pleats with operator movement and thereby steer the vehicle.