Patent ID: 7633191

Claim:
A claw-pole type multiphase step motor, comprising: a stator having a plurality of stator units, each stator unit including a coil that is sandwiched by stator yokes and mutually engaged stator yoke claw poles; and a rotor having a permanent magnet, whose magnetic poles are formed to face the claw poles of the stator yokes, wherein the claw-pole type multiphase step motor is configured to operate in accordance with a plurality of phases, wherein the plurality of stator units are coaxially layered and include 2n (n is an integer one or more) stator units per each phase of the plurality of phases, and wherein the 2n stator units per each of the plurality of phases are plane-symmetrically layered with respect to a plane perpendicular to an axial center of said stator.