US PATENT SUBCLASS 322 / 80
.~.~.~ Resistance

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


322 /   HD   ELECTRICITY: SINGLE GENERATOR SYSTEMS

44  DF  GENERATOR CONTROL {11}
59  DF  .~ With excitation winding and/or circuit control {11}
75  DF  .~.~ Control by circuit impedance {3}
80.~.~.~ Resistance {3}
81  DF  .~.~.~.~> Thermally varied resistance
82  DF  .~.~.~.~> Pressure-varied resistance
83  DF  .~.~.~.~> Short-circuited {2}

DEFINITION

Classification: 322/80

(under subclass 75) Subject matter wherein the generator excitation circuit is controlled by means of one or more resistors.

SEE OR SEARCH THIS CLASS, SUBCLASS:

76+, for generator excitation control systems under subclass 59 having a plurality of impedances.

SEE OR SEARCH CLASS

318, Electricity: Motive Power Systems,

700+, particularly subclasses 716+, for synchronous motor field control by resistance; subclass 784 for resistance control of the induction motor primary circuit during starting; subclass 814 for resistance control of the primary circuit voltage during running; subclasses 821+ for resistance control of the induction motor secondary during running; subclasses 238+, for induction motor secondary circuit control by resistance, and subclasses 533+ for motor field resistance control.

320, Electricity: Battery or Capacitor Charging or Discharging, appropriate subclasses, particularly 123, for a battery or capacitor charging or discharging

system including a generator.

323, Electricity: Power Supply or Regulation Systems,

364, for miscellaneous resistance systems.

338, Electrical Resistors, appropriate subclasses, for electrical resistors and rheostats.

388, Electricity: Motor Control Systems,

800+, and 825+ for motor speed control systems and 842+ and 848+ for motor acceleration control systems including selectable or variable impedance devices.