Abstract: A track wheel having a self supporting track (1) mounted on a pair of load bearing rollers (2, 3). The track (1) comprises a continuous resilient band having a preformed transverse and longitudinal curvature for resisting flattening to a larger radius under load but substantially free to bend to a smaller radius of curvature for passage around the rollers. The radius (8) of transverse curvature is made approximately equal to the radius (7) of said rollers, and the radius (15) of longitudinal curvature is made not greater than 20 times the radius (8) of the transverse curvature to provide a short track wheel having a high load capacity and large surface contacting area or footprint.

Abstract: A track wheel consisting of a longitudinal curved track mounted in an oval eometry on two support rollers. The track wheel is in effect an oval wheel with two axles. The axles of the two support rollers are mounted either directly or indirectly to the vehicle. The rollers support and guide both ends of the track in the small curvatures and transfers vehicle load to a surface at the lower curved part of the track. The track will withstand a high bending load in one direction, where it engages a surface, but it will also bend easily in the other direction, as it is guided over the two support rollers.