Patent ID: 7040102

Claim:
An electromagnetic clutch for a compressor comprising: a rotor which receives a driving force from a drive source; an armature rotated integrally with a drive shaft of said compressor; an electromagnetic coil for bringing said rotor into contact with said armature by an electromagnetic attractive force due to the excitation of said coil to transmit said driving force to said drive shaft and for separating said rotor from said armature by terminating the excitation of said coil to interrupt the transmission of said driving force to said drive shaft; and a detection means for detecting an excessive increase in temperature, said detection means being provided via a first electric circuit separate from a second electric circuit of said electromagnetic coil; wherein said compressor is a hybrid compressor driven by two separate drive sources, including an electric motor incorporated into said compressor, and when said detection means detects an excessive increase in temperature, driving by or activation of said electric motor is terminated.