US PATENT SUBCLASS 318 / 731
.~ With voltage source connected to motor secondary

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

727  DF  INDUCTION MOTOR SYSTEMS {12}
731.~ With voltage source connected to motor secondary {3}
732  DF  .~.~> Electronic device controls current in secondary circuit
733  DF  .~.~> Commutator connected to secondary winding
734  DF  .~.~> Slip rings connected to secondary winding {1}

DEFINITION

Classification: 318/731

With voltage source connected to motor secondary:

(under subclass 727) Subject matter wherein the secondary member is connected to a system which supplies it with a voltage in addition to the voltage electromagnetically induced by the primary member.

(1) Note. The systems of this subclass type, for example, control the speed or the torque of the energized motor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

49+, for cascaded electrical motors which include induction motors having other motors connected in series with the secondary circuit thereof.

730, for plural rotor induction motor systems.

737, for self-cascaded induction motor systems.