US PATENT SUBCLASS 318 / 461
.~ Speed or rate-of-movement

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

445  DF  AUTOMATIC AND/OR WITH TIME-DELAY MEANS (E.G., AUTOMATIC STARTING AND/OR STOPPING) {20}
461.~ Speed or rate-of-movement {3}
462  DF  .~.~> Centrifugal-type detector
463  DF  .~.~> Tachometer-type detector {1}
465  DF  .~.~> In excess of a predetermined valve

DEFINITION

Classification: 318/461

(under subclass 445) Subject matter in which the sensing means are responsive to the speed (angular or linear velocity) or rate-of-movement of the motor being controlled or of any other body.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77, and the subclasses specified in the Notes to the definition of those subclasses for automatic running-speed control of one motor with reference to the running-speed of another motor.

128, for control of a reciprocating or oscillating motor in response to rate-of-movement thereof.

146, for automatic control of the generator in a generator-fed-motor system in response to the speed of the motor being controlled or of a device driven thereby.

286, for automatic reversing of the motor being controlled in response to movement (including speed) of the motor or of a device driven thereby.

369, for automatic control of braking of an electric motor in response to the speed thereof or of devices driven thereby. 715, and 721, for control of synchronous motor in response to speed thereof.

SEE OR SEARCH CLASS

322, Electricity: Single Generator Systems,

30, for generator control in response to the speed of the

generator.