US PATENT SUBCLASS 318 / 297
.~.~ Plural, diverse or diversely controlled field windings

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

280  DF  MOTOR-REVERSING {4}
296  DF  .~ Field circuit control {2}
297.~.~ Plural, diverse or diversely controlled field windings {1}
298  DF  .~.~.~> Simultaneous energization {1}

DEFINITION

Classification: 318/297

(under subclass 296) Subject matter in which the motor is provided with two or more field-producing windings one or more of which is structurally different, differently connected, or controlled differently than one or more others of the windings.

SEE OR SEARCH THIS CLASS, SUBCLASS:

523, and the subclasses specified in the Notes thereto, for other motor control systems in which a motor has two or more field windings.