US PATENT SUBCLASS 219 / 263
.~.~.~ Automatic

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

200  DF  HEATING DEVICES {14}
260  DF  .~ Resistive element: igniter type {6}
262  DF  .~.~ With current control or external circuit connection or disconnection means {2}
263.~.~.~ Automatic {1}
264  DF  .~.~.~.~> Thermally responsive {1}

DEFINITION

Classification: 219/263

(under subclass 262) Subject matter wherein the current control or external circuit connecting or disconnecting means is automatically responsive to some predetermined condition of the igniter device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

490+, for automatically actuated power supply, voltage or current regulation or control means, and subclasses 509+ for automatically actuated current connection or disconnection means for heating devices in general under the class definition.