US PATENT SUBCLASS 318 / 287
.~ Armature or primary circuit control

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

280  DF  MOTOR-REVERSING {4}
287.~ Armature or primary circuit control {2}
288  DF  .~.~> Plural, diverse or diversely controlled armature windings {2}
291  DF  .~.~> Armature or primary current reversal {2}

DEFINITION

Classification: 318/287

(under subclass 280) Subject matter in which means are provided for effecting reversal of the motor by means in the armature or primary circuit of the motor.

(1) Note. This subclass includes armature or primary circuit control combined with the field circuit control and/or with motor structure control means for reversing the motor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

126, for reciprocating or oscillating motor systems with armature or primary circuit control of the motor.

494+, and the subclasses specified in the Notes thereto for miscellaneous motor systems having armature or primary circuit control.