Patent ID: 6800048
Filing Date: 2004-10-05
Classification: F16H

Abstract:
An infinitely variable friction gear having at least two transmission unite, each transmission unit comprising an input disc provided coaxially with the input shaft and having a toroidally shaped inside surface, and an output disc arranged coaxially with the input shaft and having a toroidally shaped inside surface, such that in each case an input disc and an output disc form a pair, several friction wheels, which are arranged and are able to swivel between the pairs of input discs and output discs, and each of which is mounted on a carrier, for the transfer of a torque from the input disc to its associated output disc by swivelling of the carriers and so too of the friction wheels and a traction element which winds around the ends of the carriers essentially in a circle and which, to produce a synchronous swivelling movement in opposite directions, is arranged in the form or a figure-8 with its crossover point mid-way between the two carriers, wherein with each carrier of a transmission unit there is associated a compensating unit (4) which effectively couples the two carriers (1, 2) of the transmission unit in such manner that when a differential angle occurs between the two carriers, a restoring force is exerted upon the carriers.