Abstract: A belt retractor for a vehicle safety belt comprises a belt spool, a locking catch, at least one locking toothing into which the locking catch can be caused to engage, and at least one force limiter which allows a rotation of the belt spool in an unwinding direction of the safety belt against a determined torque. In addition, a clutch is provided Which cooperates with the force limiter in order to alter the determined torque.

Abstract: A variable speed pulley assembly for use with V-shaped drive and driven belts include a center pulley supported for rotation and movable axially in opposite directions between an outer drive pulley half and an outer driven pulley half. The center pulley comprises an inner drive pulley half and an inner driven pulley half fixed for rotation with each other. The inner drive pulley half has a first surface presented at an angle to an inner surface of the outer drive pulley half to define between them a drive pulley groove. The drive belt is received in the drive pulley groove and is movable radially in the drive pulley groove between a radially innermost position and a radially outermost position. The inner driven pulley half has a second surface presented at an angle to an inner surface of the outer driven pulley half to define between them a driven pulley groove.