Patent ID: 8424660
Filing Date: 2013-04-23
Classification: F16D

Abstract:
1. A freewheel for a crank-type CVT, comprising; an inner ring; an outer ring, Which is rotatable relative to the inner ring in at least one direction of rotation and which is arranged radially around the inner ring; a plurality of clamping bodies which have a spring engagement groove, a head region and a foot region, the clamping bodies are arranged between the inner ring and the outer ring and the damping bodies are arranged circumferentially next to one another so that the clamping bodies bear against one another; and an encircling spring engaging into the spring engagement groove and having a radially inwardly acting spring force that can load the clamping bodies in a direction of the inner ring, wherein the damping bodies have a point of contact in the head region and a point of contact in the foot region, which is separate from the point of contact in the head region, so as to be guided simultaneously both in the head region and in the foot region, and the clamping bodies are of cycloidal form in the head region and foot region, wherein the encircling spring is a meandering spring and the meandering spring exerts a lever arm on the clamping bodies in an impact situation, which lever arm increases an uprighting moment on the clamping bodies, the lever arm being greater than a lever arm in a nominal contact region of the clamping bodies.