US PATENT SUBCLASS 318 / 690
SELF-SYNCHRONOUS TYPE OF MOTOR

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

690SELF-SYNCHRONOUS TYPE OF MOTOR {5}
691  DF  .~> With means to amplify transmitter signals
692  DF  .~> Having induction or "selsyn" type transmitter
693  DF  .~> Having impedance-type transmitter
694  DF  .~> Having commutated dynamoelectric machine transmitter
695  DF  .~> Having commutating switch-type transmitter

DEFINITION

Classification: 318/690

(under the class definition) Subject matter in which a motor acts as a receiver or slave device with respect to a master or transmitter device. The receiver motor is termed "self-synchronous" in that it has the ability to produce torque in direct response to a command from the transmitter and to position itself in response to the command. No additional feedback loop or servomotors are included in these systems.

(1) Note. In the systems in this and the indented subclasses, the position or movement of the receiver motor is always substantially synchronized with the transmitter command.