US PATENT SUBCLASS 318 / 516
.~.~.~.~ Short-circuited step-by-step

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

494  DF  ARMATURE (OR PRIMARY) CIRCUIT CONTROL {9}
508  DF  .~ Impedance-controlled {4}
514  DF  .~.~ Resistor-controlled {1}
515  DF  .~.~.~ Having short-circuiting means {1}
516.~.~.~.~ Short-circuited step-by-step

DEFINITION

Classification: 318/516

(under subclass 515) Subject matter in which means are provided for short circuiting different sections or portions of the resistor at different times (i.e., without going through all intermediate and infinitesimal values of resistance).

SEE OR SEARCH CLASS

322, Electricity: Single Generator Systems,

85, for generator field circuit control by means of resistors with means to short circuit the resistors step by step.

323, Electricity: Power Supply or Regulation Systems,

297, for control systems in general which include resistors which are short circuited step by step as the controlling element.