US PATENT SUBCLASS 307 / 50
.~.~.~ Tap-changing or variable number of cells

Current as of: June, 1999
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307 /   HD   ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS

43  DF  PLURAL SUPPLY CIRCUITS OR SOURCES {14}
44  DF  .~ One source floats across or compensates for other source {3}
48  DF  .~.~ Storage battery or accumulator-type source {2}
50.~.~.~ Tap-changing or variable number of cells

DEFINITION

Classification: 307/50

(under subclass 48) Subject matter having means for changing the taps of the cells, so that a variable number of cells are in the circuit.

SEE OR SEARCH CLASS

320, Electricity: Battery or Capacitor Charging or Discharging, appropriate subclass for battery charging or discharging, especially

116+, for various series/parallel arrangements of cells or batteries.

323, Electricity: Power Supply or Regulation Systems,

255, and 340 for transformer tap changing systems.