US PATENT SUBCLASS 337 / 365
.~.~.~ Snap-action

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}
362  DF  .~.~ Bimetallic element unitary with or directly actuates contacts {5}
365.~.~.~ Snap-action {3}
366  DF  .~.~.~.~> With magnetic flux source
367  DF  .~.~.~.~> With reset means
368  DF  .~.~.~.~> With adjustment or calibration means

DEFINITION

Classification: 337/365

(under subclass 362) Subject matter wherein the claimed structure includes means whereby the movable contact, or contacts, may be operated from a first position to a second position quickly, as by a snap action with the contact motion being independent of the rate of movement of the operator. This may be accomplished by means of a spring, a permanent magnet, or other appropriate means, such as for example; an inherent characteristic or structure of the bimetallic element itself.

(1) Note. For other snap action means used in devices in this class, see the subclasses listed under SEARCH THIS CLASS, SUBCLASS in subclass 53.

SEE OR SEARCH THIS CLASS, SUBCLASS:

89+, above for similar subject matter in electrothermally actuated switches. See (1) Note above.

SEE OR SEARCH CLASS

62, Refrigeration, 4, for refrigerator defrosting apparatus utilizing bimetallic thermostatic elements operative with a snap action.

200, Electricity: Circuit Makers and Breakers,

402+, for mechanical snap switches.

236, Automatic Temperature and Humidity Regulation,

48, for automatic temperature control devices with snap action.

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

188, for electromagnetically actuated switches with snap action.