Abstract: A motor including an electromagnetically actuated friction clutch and friction brake for respectively transferring a driving torque and/or a braking torque to an output shaft. A rigid hub is rotationally fixed on an output shaft of the motor for rotation therewith. A first axially deflectable spring washer is connected to an annular shaped clutch disk, with a second axially deflectable spring washer being connected to a brake disk. The clutch disk and brake disk are axially movable by a magnetic force and are adapted to be pressed against a driving pulley and a braking block respectively. The hub is fashioned as a one piece member and a supporting ring is disposed axially between the clutch disk and the brake disk.

Abstract: An arrangement for protecting a belt has a cover element arranged to at least partially surround a belt pulley, and a hood element arranged on the cover element and adjustable relative to the other in direction normal to the axis of the belt pulley. The hood element may be telescopically displaceable over the cover element and fixable to the same. The hood element may also be formed as a bellows with an adjustable length.