ADAPTABLE TRACTION SYSTEM OF A VEHICLE

摘要

A traction system for a vehicle has a support frame that defines a circular track belt support that is revolvable about an axis at its center, a flexibl e track belt; and a track belt stretching assembly comprising one or more trac k belt stretching rollers. The system has one traction configuration in which the flexible traction belt is held on said support track forming a substantially circular, wheel-like traction surface, and can change to a stretching state in which said rollers engage said belt and stretch it from its state in said one traction configuration to a stretched state to define one or more other traction configurations of the system.