US PATENT SUBCLASS 318 / 728
.~ Repulsion start


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

727  DF  INDUCTION MOTOR SYSTEMS {12}
728.~ Repulsion start


DEFINITION

Classification: 318/728

Repulsion start:

(under subclass 727) Subject matter having a switching means in the secondary circuit of the motor arranged so that, when starting, the current induced in the secondary member creates an electromagnetic field which reacts with the electromagnetic field formed by the primary member to cause the motor to accelerate and having means to run the motor as an induction motor after starting.

(1) Note. The switching means of this subclass type includes, for example, a commutator and brushes.

(2) Note. Subject matter of this subclass type includes, for example, repulsion-induction motors.

(3) Note. The means to run the motor as an induction motor may or may not include the switching means.

(4) Note. See the general class notes for the definition of a "repulsion motor".

SEE OR SEARCH THIS CLASS, SUBCLASS:

725, for repulsion motor systems generally.

SEE OR SEARCH CLASS 310, Electrical Generator or Motor Structure,

173, for alternating current commutating motors.