Friction gear used as a continuously variable transmission comprises a drive shaft with a concave universal ball joint and a driven shaft with a universal ball joint

摘要

Friction gear comprises a drive shaft (1) with a concave universal ball joint (2) and a driven shaft (3) with a universal ball joint (5). The common middle axle (4) of the drive and driven shafts simultaneously represent the symmetrical axis of the universal ball joints. The openings of the universal ball joints are directed against each other and have a common middle point (10). Each universal ball joint is in contact with rollers (7, 9). Preferred Features: The rollers are fixed with their common axis (8) longitudinally slide in the axial direction.