US PATENT SUBCLASS 337 / 382
.~ With longitudinally expansible solid element

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

298  DF  THERMALLY ACTUATED SWITCHES {7}
382.~ With longitudinally expansible solid element {7}
383  DF  .~.~> With plural contacts or external circuit completion means
384  DF  .~.~> With manual or other mechanical contact control means {4}
392  DF  .~.~> With operating range calibration or adjusting means
393  DF  .~.~> Expansible solid structure or composition of material {3}
397  DF  .~.~> Plural deformable elements in single switch
398  DF  .~.~> Housing, casing or support means
399  DF  .~.~> Contact or terminal structural or composition of material {1}

DEFINITION

Classification: 337/382

(under subclass 298) Subject matter wherein the thermally responsive switching device comprises at least one monometallic solid element whose coefficient of expansion along its major axis is utilized to cause the opening or closing of an electrical circuit as a result of the change in dimension of the element. The element may be fixedly secured at both ends, around its circumference, or at one end only, according to the design of the switch.

SEE OR SEARCH THIS CLASS, SUBCLASS:

123+, above for similar subject matter in an electrothermally actuated switch.

SEE OR SEARCH CLASS

219, Electric Heating,

512, for automatically operated switching means for an electric heater utilizing linearly expansible metal.

236, Automatic Temperature and Humidity Regulation, 5, 19, 33, 43, 59+, 66, 96, and 101+ for automatic temperature control devices utilizing expansible solid thermostats.

237, Heating Systems,

8, for heating systems with automatic control with expansible metal.

374, Thermal Measuring and Testing,

187+, for expansible solid type thermometers.