US PATENT SUBCLASS 337 / 141
.~.~ With external or auxiliary heating means

Current as of: June, 1999
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337 /   HD   ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
123  DF  .~ With longitudinally expansible solid element (e.g., rod, wire strip, etc.) {7}
141.~.~ With external or auxiliary heating means

DEFINITION

Classification: 337/141

(under subclass 123) Subject matter including significant heat concentrating or generating means, such as heating coils or high resistance elements, to increase or augment the heating effect of the thermal current primary heating source.

SEE OR SEARCH THIS CLASS, SUBCLASS:

102+, for similar devices utilizing electrothermally responsive bimetallic elements.

120, for expansible or vaporizable fluid actuated switches with heater means.

182, for fusible element actuated switches with heater means.

324, for thermally responsive expansible or vaporizable fluid actuated switches with heater.

377, for thermally responsive bimetallic element actuated switches.