US PATENT SUBCLASS 318 / 76
.~.~.~.~ Differential-gearing detector

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

34  DF  PLURAL, DIVERSE OR DIVERSELY CONTROLLED ELECTRIC MOTORS {22}
66  DF  .~ Running-speed control {4}
68  DF  .~.~ Relative motor speed control {5}
69  DF  .~.~.~ With speed-difference detector {2}
76.~.~.~.~ Differential-gearing detector

DEFINITION

Classification: 318/76

(under subclass 69) Subject matter in which the detector comprises a differential gearing device in which an input element of the gearing is driven by one or more motors another input element is driven by one or more other motors so that the differential or output element of the gearing operates in response to the relative speeds of the motors.

SEE OR SEARCH THIS CLASS, SUBCLASS:

8, for motor systems in this class having a plurality of motors driving a differential gearing as the load device for the motors.

SEE OR SEARCH CLASS

475, Planetary Gear Transmission Systems or Components, appropriate subclasses for control of plural power sources

and for differential planetary gearing, per se.