Apparatus for transmitting a torque from a motor to a compressor

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 (6a) 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).