US PATENT SUBCLASS 219 / 512
.~.~.~.~ Comprising linearly expansible metal

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  DF  .~.~.~ Thermally responsive {7}
512.~.~.~.~ Comprising linearly expansible metal

DEFINITION

Classification: 219/512

(under subclass 510) Subject matter wherein the particular thermally responsive current connection or disconnection structure comprises or includes linearly expansible metal bar means whereby the expansion or contraction of the bar initiates or controls the opening or closing of a circuit to the heating element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

253, for electric flatiron type device with thermally responsive expansible bar current control means.

265, for resistive element igniter with bimetallic thermally responsive current switching means.

SEE OR SEARCH CLASS

73, Measuring and Testing, 363+, for expanding solid type thermometers.

236, Automatic Temperature and Humidity Regulation,

96, for flue attached thermostats of the expanding solid type, and subclasses 101+ for other expanding solid type.

337, Electricity: Electrothermally or Thermally Actuated Switches,

333+, and 382+ for thermally actuated switches employing expansible solid actuating means.