Patent ID: 7518823

Claim:
A spindle motor for implementation in a low profile hard disk drive, said spindle motor comprising: a hub, having a rotational axis, to which a platter of said low profile hard disk drive is coupled, said hub coupled to a suitable bearing system; a stator portion configured to be coupled to said low profile hard disk drive, said stator portion having twelve stems and a plurality of windings, said plurality of windings providing conductivity for creating an electromagnetic force; a rotor portion coupled with said hub, said rotor portion having a permanent magnet radially polarized, said permanent magnet having sixteen poles, wherein the number of poles of said rotor portion has a defined proportion relative to the number of stems of said stator portion, said stator portion and said rotor portion are configured for disposition beneath said platter; a torque radius interposed between said stator portion and said rotor portion; and wherein a created electromagnetic force applied at said torque radius provides a torque to said rotor portion, said torque enabling rotation of said hub.