US PATENT SUBCLASS 337 / 52
.~.~.~ With spring or other energy storage device

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

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
36  DF  .~ With bimetallic elements (i.e., motion takes place in a plane at right angles to its major axis) {10}
37  DF  .~.~ With manual or other mechanical contact controlling means {12}
52.~.~.~ With spring or other energy storage device {4}
53  DF  .~.~.~.~> Snap-action {4}
58  DF  .~.~.~.~> Compound motion means {2}
61  DF  .~.~.~.~> Rotary or oscillatory motion device (e.g., spring motor)
62  DF  .~.~.~.~> Reciprocating or slidable motion device {4}

DEFINITION

Classification: 337/52

(under subclass 37) Subject matter including spring or other potential energy storage means whereby a major portion of the force exerted in actuating the contacts of the switch from one condition to another is derived.

(1) Note. The actuating force is usually transmitted to the movable contact structure through mechanical means upon the spring being released from its energy storage position. Devices in which the spring means acts only as a biasing means or a source of contact pressure will not be classified here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

67, for devices in which the spring means acts only as a biasing means or a source of contact pressure.

239+, for electrothermal fuse with spring tensioned fuse link.

317+, for thermal expansible fluid switch with spring means.

342+, for similar type switches with thermally responsive bimetallic actuating means. 388+, for thermal expansible element switch with spring means.

407, for thermal fusible element switch with spring means.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

402+, for mechanical snap action switches with spring means.

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

6+, for electromagnetically operated automatic circuit breakers utilizing a tensioned spring in the contact actuating means and subclass 188 for specifically claimed snap acting contact control structure.