(under subclass 700) Subject matter which includes an alternating current motor winding connected to an electric circuit, or a field winding connected to an electric circuit,
or both an alternating current winding and a field winding each connected to an electric circuit wherein the electric circuit in each instance includes switching means to change the number of magnetic poles of the motor winding or windings.
(1) Note. Subject matter of this subclass type includes motors or subcombinations of motors capable of running at more than one speed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
352, for field or secondary control circuits for changing the number of poles in field windings or secondary motor windings in running speed control circuits.
524, for field or secondary control circuits for changing the number of poles in field windings generally.
SEE OR SEARCH CLASS
322, Electricity: Single Generator Systems, 62, for generators having a convertible number of poles.
