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Coupling with Concentric Contact Around Motor Shaft for Line Start Synchronous Motor

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
A method comprises providing a line-start synchronous motor. The motor has a stator, a rotor core disposed within the stator, and a motor shaft. In accordance with a step of the method, a coupling for coupling a load to the motor is provided. The coupling has a motor shaft attachment portion configured to provide substantially concentric contact around the shaft at the end of the motor shaft. The coupling has a load attachment portion configured to operatively connect to a load. In accordance with a step of the method, a load is coupled to the motor with the coupling, and driven from start to at least near synchronous speed during steady state operation of the motor with a load coupled thereto. The motor shaft attachment portion may comprise a bushing assembly with matching and opposed tapered surfaces that cooperate to secure the motor shaft attachment portion around the motor shaft.
Melfi, Michael J. (Richfield, OH), Burdeshaw, Galen E. (Simpsonville, SC)
14/ 269,437
May 5, 2014
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This invention was made with Government support under agreement no. DE-FG36-08GO180132 awarded by the Department of Energy. The Government has certain rights in this invention.