Patent ID: 7645196

Claim:
An apparatus for transmitting torque from a motor to a compressor comprising a hub ( 7 ) connecting with a compressor shaft and a pulley ( 1 ) rotatably supported on a compressor housing ( 4 ), the pulley ( 1 ) and the hub ( 7 ) connected with one another by a device for vibration clamping ( 9 ) and by a device for loading limiting, the load limiting device is implemented so that the connection between the pulley ( 1 ) and hub ( 7 ) is discontinued if a specific torque is exceeded, the load limiting device comprising a catch ( 5 ) and a limiter ring ( 6 ) comprised of metal including pegs ( 6 a ) directed radially to the center which shear off to ensure the predetermined break off function is defined by the ring ( 6 ) alone, and, said limiter ring ( 6 ) through radial form fitting with hub ( 7 ), transmits the torque onto the compressor shaft, catch ( 5 ) is made of a synthetic material encasing the limiter ring ( 6 ) whereby catch ( 5 ) and limiter ring ( 6 ) can be axially displaced on hub ( 7 ).