US PATENT SUBCLASS 392 / 323
.~.~.~ With means to adjust current path between electrodes

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

Internet Version by PATENTEC © 1999      Terms of Use


392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
311  DF  .~ Fluid-in-circuit type heater {6}
322  DF  .~.~ With reservoir or tank {1}
323.~.~.~ With means to adjust current path between electrodes

DEFINITION

Classification: 392/323

With means to adjust current path between electrodes:

(under subclass 322) 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 by subject matter of this subclass type 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.

329, for line connected boiler.

334, for manually filled tank or container.

SEE OR SEARCH CLASS 338, Electrical Resistors, particularly

80+, for mechanically variable or adjustable liquid resistors.