US PATENT SUBCLASS 318 / 720
.~ Armature winding circuits

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

700  DF  SYNCHRONOUS MOTOR SYSTEMS {7}
720.~ Armature winding circuits {4}
721  DF  .~.~> Responsive to rotor shaft position or speed
722  DF  .~.~> Having electronic power conversion circuit
723  DF  .~.~> Having variable frequency supply
724  DF  .~.~> Having a plurality of windings or winding portions

DEFINITION

Classification: 318/720

Armature winding circuits:

(under subclass 700) Subject matter which includes an alternating current winding of the motor.

(1) Note. Subject matter of this subclass type includes, for example, circuits to energize or control the alternating current winding of the motor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

494+, for armature circuit control of motor generally.

704, for synchronous motor pole changing motor winding circuits.

706+, for synchronous motor synchronization systems which remove power form motor armature upon failure to synchronize or upon loss of synchronization.

719, for synchronous motor synchronization systems wherein the motor armature winding is different prior to synchronism.

767+, for induction motor circuit control circuits.