US PATENT SUBCLASS 392 / 315
.~.~.~ With means to adjust current path between electrodes

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}
314  DF  .~.~ Continuous flow of fluid being heated {4}
315.~.~.~ With means to adjust current path between electrodes {2}
316  DF  .~.~.~.~> Responsive to condition of fluid
317  DF  .~.~.~.~> Movable dielectric means

DEFINITION

Classification: 392/315

With means to adjust current path between electrodes:

(under subclass 314) 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:

323, for reservoir or tank.

329, for line connected boiler.

334, for manually filled tank or container.

SEE OR SEARCH CLASS

338, Electrical Resistors, 80+, for mechanically variable or adjustable liquid

resistors.