US PATENT SUBCLASS 318 / 812
.~.~ Voltage control

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

727  DF  INDUCTION MOTOR SYSTEMS {12}
767  DF  .~ Primary circuit control {9}
812.~.~ Voltage control {3}
813  DF  .~.~.~> With transformer
814  DF  .~.~.~> With impedance control {1}
816  DF  .~.~.~> Single phase, split phase motors {1}

DEFINITION

Classification: 318/812

Voltage control:

(under subclass 767) Subject matter wherein the circuit connected to the primary member of the motor includes means for regulating the voltage applied to the circuit.

(1) Note. Regulation includes a constant or a selectively variable voltage control.