US PATENT SUBCLASS 392 / 329
.~.~.~.~ With means to adjust current path between elctrodes

Current as of: June, 1999
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392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
311  DF  .~ Fluid-in-circuit type heater {6}
324  DF  .~.~ Steam or vapor generator {2}
325  DF  .~.~.~ Line connected boiler {3}
329.~.~.~.~ With means to adjust current path between elctrodes {1}
330  DF  .~.~.~.~.~> Movable dielectric means

DEFINITION

Classification: 392/329

With means to adjust current path between electrodes:

(under subclass 325) Subject matter including means to vary the effective length or cross-sectional area of the current flow between the electrodes.

(1) Note. Generally the varying of the current path results in varying the resistance of the path and consequently the magnitude of the current.

SEE OR SEARCH THIS CLASS, SUBCLASS:

315, for continuous flow of fluid being heated.

322, for reservoir or tank.

334, for manually filled tank or container.

SEE OR SEARCH CLASS 323, Electricity: Power Supply or Regulation Systems,

296, for voltage or current regulating systems utilizing liquid resistors.

338, Electrical Resistors, particularly

80+, for mechanically variable or adjustable liquid resistors.

373, Industrial Electric Heating Furnaces,

29, and 120+ for electric furnace structure including adjustable electrodes.