Patent ID: 6247223
Filing Date: 2001-06-19
Classification: F16C,H02K,Y10T

Abstract:
A method of making an electric motor, comprising the steps of:a) mounting a rotor core on a shaft;b) mounting a pair of thrust collars on either side of the rotor core;c) mounting a pair of springs on either side of the rotor core;d) mounting a pair of thrust plates on either side of the rotor core so that each of the thrust plates is coupled to a different one of the thrust collars and each of the springs is disposed between a different one of the thrust collars and the thrust plates to form a first bearing sub-assembly and a second bearing sub-assembly;e) mounting a first end of the shaft into a bearing portion of a first end shield;f) positioning a motor frame/stator sub-assembly over the rotor subassembly; andg) mounting a second end of the shaft into a bearing portion of a second end shield.