US PATENT SUBCLASS 318 / 530
.~ Plural, diverse or diversely connected or controlled sources of field circuit voltage


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

521  DF  FIELD OR SECONDARY CIRCUIT CONTROL {6}
530.~ Plural, diverse or diversely connected or controlled sources of field circuit voltage


DEFINITION

Classification: 318/530

(under subclass 521) Subject matter in which there are

provided two or more sources of voltage for the motor field circuit, one or more of such sources being different structurally, differently connected or differently controlled than one or more others of the sources.

SEE OR SEARCH THIS CLASS, SUBCLASS:

500, and the subclasses specified in the Notes thereto, for motor systems, in which the armature or primary circuit of the motor is provided with two or more sources of supply.

SEE OR SEARCH CLASS

322, Electricity: Single Generator Systems,

86, for generator systems wherein two or more voltage sources are provided for the field circuit of the generator.