Patent ID: 8536750

Claim:
An improved electric motor having a rotor assembly supported in operable relationship to a stator assembly on a rotor shaft within a housing by a bearing, the improvement comprising: an axially deformable coupler positioned within housing for coupling a rotor of the rotor assembly to the rotor shaft with a clearance gap between the rotor and the rotor shaft, the axially deformable coupler configured to enable the rotor to move axially relative to the stator assembly and to enable the rotor to move free of frictional-sliding contact with respect to the rotor shaft; and, the rotor assembly further including a pair of shaft support bearings, a spacer, and a disc stop flange aligned around the rotor shaft, the axially deformable coupler being secured to the rotor shaft between the spacer and the disc stop flange by settings of the shaft support bearings, the disc stop flange including a rib that is configured to prevent the rotor from contacting the stator assembly, and the rotor shaft including another rib such that the rotor is coupled to the rotor shaft by the deformable coupler between the rib of the disc stop flange and the another rib of the rotor shaft.