Patent ID: 8852040

Claim:
A switchable friction clutch having a drive wheel driven by a drive motor via a drive belt, wherein a first electromagnet arrangement is provided for actuating a first friction clutch, and a second electromagnet arrangement is provided for actuating a second friction clutch in order to be able to drive a drive shaft of an auxiliary unit at different rotational speeds via the drive wheel at one rotational speed of the drive wheel, wherein a belt drive arrangement is provided between the drive wheel and the drive shaft of the auxiliary unit to drive the drive shaft at the different speeds, wherein the belt drive arrangement comprises a first belt drive having a first driving belt which rests on a rotatably mounted first intermediate wheel and a flange ring connected in a rotationally fixed manner to the drive shaft of the auxiliary unit, wherein the belt drive arrangement comprises a second belt drive having a second driving belt, which rests on the drive wheel and a rotatably mounted second intermediate wheel, wherein the first intermediate wheel can be connected switchably to a mating section ( 5 a ) on the drive wheel, and the second intermediate wheel can be coupled switchably to a mating section ( 17 a ) on a section which is connected in a rotationally fixed manner to the drive shaft of the auxiliary unit.