Patent ID: 7772732
Filing Date: 2010-08-10
Classification: H02K

Abstract:
1. An electric motor comprising: a stator assembly including a central bore; a rotor assembly positioned within the central bore, the rotor assembly including a rotor shaft extending from at least one end of the bore, the rotor shaft including a locating groove formed therein, the locating groove being formed substantially continuously around the shaft, the locating groove having a base and a pair of opposing sidewalls, the base being arranged substantially parallel to a longitudinal axis of the rotor shaft, the pair of opposing sidewalls extending from the base wall substantially perpendicular to the longitudinal axis; a thrust system mounted on the rotor shaft; a locator at least partially disposed in the locating groove between the opposing sidewalls, the locator being located at a predetermined position along the rotor shaft to limit movement of the thrust system along the rotor shaft; and an end shield connected to an end of the stator assembly from which the rotor shaft extends, the endshield including keyhole-shaped open-ended slots for receiving fasteners to secure the endshield to the stator assembly.