US PATENT SUBCLASS 322 / 29
.~ Speed or frequency of generator

Current as of: June, 1999
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322 /   HD   ELECTRICITY: SINGLE GENERATOR SYSTEMS

17  DF  AUTOMATIC CONTROL OF GENERATOR OR DRIVING MEANS {13}
29.~ Speed or frequency of generator {3}
30  DF  .~.~> Centrifugal of fly weight governor
31  DF  .~.~> Tachometer devices
32  DF  .~.~> Frequency responsive devices or networks

DEFINITION

Classification: 322/29

(under subclass 17) Subject matter wherein the automatic control of the generator is in response to the speed or frequency of the generator.

SEE OR SEARCH CLASS

307, Electrical Transmission or Interconnection Systems,

87, for systems for the interconnection of plural generators upon attainment of a predetermined frequency condition.

324, Electricity: Measuring and Testing,

160+, for speed measuring, and subclasses 76.39+ for frequency measuring.

320, Electricity: Battery or Capacitor Charging or Discharging, appropriate subclass for source regulation in a battery or capacitor charging or discharging system. 361, Electricity: Electrical Systems and Devices,

236+, for speed responsive systems.

388, Electricity: Motor Control Systems, art collections 924+ for running-speed control systems including a feedback device responsive to the speed of the motor.