US PATENT SUBCLASS 337 / 136
.~.~.~.~.~ With preset deformation

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}
126  DF  .~.~ With manual or other mechanical contact actuating means {3}
131  DF  .~.~.~ Snap-action (e.g., bistable) {4}
135  DF  .~.~.~.~ With flexible vane or plate {1}
136.~.~.~.~.~ With preset deformation

DEFINITION

Classification: 337/136

(under subclass 135) Subject matter wherein the vane or plate is specifically formed with a predistorted portion or portions in such a manner that it is movable with a snap action in response to thermal extension of an actuating means. The actuating means is usually an expansible wire or ribbon having a different coefficient of expansion than the vane or plate.