US PATENT SUBCLASS 318 / 755
.~.~.~.~ Automatic current reversal on start winding

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

727  DF  INDUCTION MOTOR SYSTEMS {12}
739  DF  .~ Reversing {5}
749  DF  .~.~ Operating from a single phase source {3}
753  DF  .~.~.~ With de-energizable start winding {2}
755.~.~.~.~ Automatic current reversal on start winding

DEFINITION

Classification: 318/755

Automatic current reversal on start winding:

(under subclass 753) Subject matter wherein the reversing means includes a self-acting switch which reverses the direction of the current through the start winding after the start and the run windings are energized so that when the start winding is de-energized and subsequently reenergized the motor will rotate in the other direction.

(1) Note. The switch of this subclass type is self-acting in the sense that it is actuated as a result of the

operation.

(2) Note. The reversal can be as a result of (a) a centrifugal switch, (b) a thermal switch, or (c) an electromagnetic relay or some other means.