Patent ID: 7900723
Filing Date: 2011-03-08
Classification: A63C,B62D,B62K,B62M

Abstract:
1. A motorized vehicle comprising: a) a chassis supporting an engine, a track and an operator platform; b) a framework mounted to said chassis having a chassis cover piece mounted to pivot relative to said framework and 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 track includes a drive portion and a flexible portion, wherein said flexible portion comprises a plurality of flexible track pieces mounted to contact a contoured substantially rigid bottom surface of said chassis to resiliently expand and contract away from and toward adjoining track pieces in response to weight shifting movements of an operator at said operator platform to vary the gripping action of said track with the ground to steer said vehicle.