In a multiple phase claw pole type motor which includes: a plurality of claw poles including a claw portion extending in an axial direction and having a magnetic pole surface facing a rotor in a state of being separated from the rotor by a small gap, a radial yoke portion extending radially outwardly...http://www.google.ca/patents/US7714475?utm_source=gb-gplus-sharePatent US7714475 - Multiple phase claw pole type motor
