Infinitely variable gear system for e.g. bicycles, has chain drive whose gear is located outside gear housing, and pinion bolt driven over chain of chain ring that is rotationally and axial fixedly connected to drive wheel of bicycle

摘要

The system has a smaller expanding clutch (17) supported on a transmission housing (30) over a race ring (17b). Twin taper roller bearings (2b) are rotatory driven over a friction ring (2d), which rotatory drives a supporting ring (17a) of the clutch. The supporting ring is radially mounting on the housing, and drives a pinion bolt (11) of a chain drive, where gear of the chain drive is located outside a gear housing. The pinion bolt is driven over a chain of a chain ring that is rotationally and axial fixedly connected to a drive wheel of a bicycle.