Patent ID: 6598919
Filing Date: 2003-07-29
Classification: A63G,B60B

Abstract:
A wheel assembly for a wheeled vehicle, comprising:a generally ring-shaped integrally formed outer tire member having a circumferential inner surface that is convexly shaped in a lateral direction; a generally ring-shaped integrally formed inner tire member having a circumferential outer surface that is concavely shaped in a lateral direction; the outer tire member being made of relatively hard and relatively rigid material, and the inner tire member being made of resilient material, such that the inner tire member may be deformed in order to position it inside the outer tire member with the convex inner surface of the outer tire member in interfitting relation to the concave outer surface of the inner tire member; a hub assembly having an outer circumferential surface; the inner tire member having an inner circumferential surface that is supported upon the hub assembly in engaging relationship with the outer circumferential surface of the hub assembly; and the hub assembly having securing means for maintaining a radially outward force upon the inner circumferential surface of the inner tire; whereby the outer tire sustains the wear of a running surface upon which the vehicle may be supported, while the inner tire provides resilient support to the outer tire as well as a smooth ride for the vehicle.