US PATENT SUBCLASS 318 / 688
.~.~ Shaded pole motors

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

560  DF  POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) {23}
671  DF  .~ With particular motor control system responsive to the "actuating signal" {10}
688.~.~ Shaded pole motors

DEFINITION

Classification: 318/688

(under subclass 671) Subject matter in which the particular motor control is used to control a shaded pole motor. A shaded pole motor is a single phase induction or hysterysis motor where field shifting or distortion means is provided to determine direction of rotation.