Patent ID: 6997294

Claim:
An electromagnetic clutch comprising: a magnetic flux loop forming member including a rotor, an armature and an electromagnet, having a coil and a yoke, the magnetic flux loop forming member forming a magnetic flux loop upon excitation of the coil; a clutch operative to be coupled or uncoupled by the armature that is operatively shifted in response to an electromagnetic force generating during excitation of the coil; a proximate member including a shaft member and a support member, the shaft member being placed closely proximate to the rotor and supporting the magnetic flux loop forming member via the support member; and a magnetic flux leakage eliminating section, including a plurality of spatial areas defined between an inner peripheral surface of the rotor and an outer peripheral surface of the proximate member; for eliminating an amount of magnetic fluxes leaked from the magnetic flux loop forming member to the proximate member during excitation of the coil.