US PATENT SUBCLASS 318 / 97
.~.~ Field or secondary circuit control

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

34  DF  PLURAL, DIVERSE OR DIVERSELY CONTROLLED ELECTRIC MOTORS {22}
90  DF  .~ Acceleration control {4}
97.~.~ Field or secondary circuit control

DEFINITION

Classification: 318/97

(under subclass 90) Subject matter in which means are provided for controlling the field or secondary circuits of the electric motors.

SEE OR SEARCH THIS CLASS, SUBCLASS:

84, and the subclasses specified in the Notes to the definition of that subclass for plural motor systems having field circuit control for controlling the running speed of the motors.

100, for plural motor systems having field control for load control of the motors.

521, and the subclasses specified in the Search Notes thereto, for miscellaneous motor systems having field or secondary circuit control.