US PATENT SUBCLASS 219 / 510
.~.~.~ Thermally responsive

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

200  DF  HEATING DEVICES {14}
507  DF  .~ With current connection and/or disconnection means (e.g., switch) {2}
509  DF  .~.~ Automatically operated {3}
510.~.~.~ Thermally responsive {7}
511  DF  .~.~.~.~> With auxiliary heating means for thermal switch means
512  DF  .~.~.~.~> Comprising linearly expansible metal
513  DF  .~.~.~.~> Comprising expansible fluid (e.g., alcohol or mercury)
514  DF  .~.~.~.~> With solenoid means
515  DF  .~.~.~.~> Adjustable means
516  DF  .~.~.~.~> Insertable into or in direct contact with heated material
517  DF  .~.~.~.~> Fusible link

DEFINITION

Classification: 219/510

(under subclass 509) Subject matter wherein the current connection or disconnection means is responsive to the internal temperature of the heating element, that prevailing within the heated medium or both.

SEE OR SEARCH THIS CLASS, SUBCLASS:

241, for hand held heated tool with thermal control means.

251+, for electric flatiron type device with thermally

responsive control means.

264+, for resistive element igniter with thermally controlled switch.

328+, for liquid heaters with current control means responsive to liquid temperature. 413, for oven with current control responsive to oven condition (e.g., temperature).

494+, for heaters in general with current regulator responsive to thermal condition.

SEE OR SEARCH CLASS

307, Electrical Transmission or Interconnection Systems,

117, for heat responsive electric switch systems.

337, Electricity: Electrothermally or Thermally Actuated Switches,

298+, for the structure of thermally actuated switches.

361, Electricity: Electrical Systems and Devices,

161+, for relay control circuits including a thermal device.