US PATENT SUBCLASS 337 / 349
.~.~.~ With contact biasing, pressure control or adjusting means

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

298  DF  THERMALLY ACTUATED SWITCHES {7}
333  DF  .~ With bimetallic element {9}
334  DF  .~.~ With manual or other mechanical contact control means {10}
349.~.~.~ With contact biasing, pressure control or adjusting means

DEFINITION

Classification: 337/349

(under subclass 334) Subject matter including significant details of means whereby a predetermined or constant pressure is applied to the contacts when in the circuit closing position or whereby such contact pressure may be adjusted at will.

SEE OR SEARCH THIS CLASS, SUBCLASS:

67, for similar subject matter in electrothermally actuated switches having bimetallic means combined with manual or mechanical contact control means.

342+, for structure whereby the movable contact is biased toward open or closed condition by tension or compression of a spring, which spring acts as an agent for assisting in the reversal of contact positions, when such reversal takes place.

SEE OR SEARCH CLASS

219, Electric Heating,

515, for thermally responsive switches in electric heater circuits and having adjusting means.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

194, for similar subject matter in electromagnetically operated switches.

374, Thermal Measuring and Testing,

141+, and 205+ for bimetallic thermometers combined with contact pressure control means.