Stephen Joe Rice

US Patent:

46187910, Oct 21, 1986

Filed:

Oct 17, 1985

Appl. No.:

6/788333

Inventors:

Giles W. Morrill - Erwin TN
Stephen G. Rice - Erwin TN

International Classification:

H02K 306
H02K 516

US Classification:

310 90

Abstract:

A rotor assembly for an alternating current motor has a stator to cooperate with the rotor assembly. The rotor assembly includes a magnetically permeable rotor mass of a stack of rotor laminations which are mounted on a hub, and the hub is secured to a shaft which rotates in a stationary bearing fixed to the motor frame. The rotor mass includes apertures which extend longitudinally and die cast squirrel cage conductor bars extend through these apertures. Integral with the rotor assembly is a die cast extension on the rotor mass coaxially on one end thereof. This coaxial die cast extension surrounds one end of the shaft and is adapted to be connected directly to a load to transmit torque directly from the conductor bars of the squirrel cage winding from the load without the necessity of the torque passing through the shaft. The die cast extension may also have a non-circular configuration for readily transmitting torque to the load. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.