US PATENT SUBCLASS 318 / 77
.~.~.~ Controlling motor speed in response to speed of another motor

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}
77.~.~.~ Controlling motor speed in response to speed of another motor {1}
78  DF  .~.~.~.~> Controlling A.C. frequency or rate of electrical impulses to other motor

DEFINITION

Classification: 318/77

(under subclass 68) Subject matter in which means are provided for controlling the speed of a motor in response to changes in speed of another motor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

41+, for plural motor systems having synchronizing interconnections between the motors so that one motor may supply energy to another motor when the speed ratio varies.