US PATENT SUBCLASS 318 / 92
.~.~ Control of both armature (or primary) and field (or secondary) circuits

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}
92.~.~ Control of both armature (or primary) and field (or secondary) circuits {1}
93  DF  .~.~.~> Series-parallel connected armature or primary circuits

DEFINITION

Classification: 318/92

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

SEE OR SEARCH THIS CLASS, SUBCLASS:

79, and 82, for plural motor systems having combined armature (or primary) and field (or secondary) circuit control for running speed control of plural motors.

493, and the subclasses specified in the Search Notes thereto, for miscellaneous motor systems having combined armature (or primary) and field (or secondary) circuits control.