Drive i.e. angle drive, for use in technical and medical angular handpiece, has balls partially attached in cylindrical bores at periphery of drive wheels that transmit torque between drive gear and driven gear in form-fit manner

摘要

The drive has balls (1) partially attached in cylindrical bores (4a) at periphery of interlocked drive wheels (3) in a circumferential direction or axial direction in a form-fit manner. The drive wheels transmit torque between a drive gear and a driven gear in a form-fit manner. The balls are arranged in single- or multiple rows, where the ball rows are offset to each other. The balls are protected from being fallen from the drive wheels by a ball holder. The drive wheels are formed in cone-shape.