Patent ID: 6274957
Filing Date: 2001-08-14
Classification: H02K,Y10T

Abstract:
An electromagnetic device comprising:a stator stack having a longitudinal length with longitudinally opposite first and second end surfaces, an exterior surface between the first and second end surfaces and a center bore through the stator stack between the first and second end surfaces,first and second end shields covering over the respective first and second end surfaces of the stator stack, the first and second end shields each have a shaft opening aligned with the center bore of the stator stack, each of the end shields has a base surface that mates against one of the first and second end surfaces of the stator stack, and the first end shield has a shoulder that projects outwardly from the base surface of the first end shield and overlays a portion of the stator stack exterior surface, the shoulder has a shoulder surface that mates against the portion of the stator stack exterior surface and resists a relative torsional movement between the stator stack and the first end shield, the base surface and the shoulder surface are perpendicular to each other, the shoulder surface and the portion of the stator stack exterior surface are both flat surfaces; and,a plurality of threaded fasteners extend between the first and second end shields through the base surfaces of the first and second end shields and over the exterior surface of the stator stack and secure the first and second end shields to the respective first and second end surfaces of the stator stack.