US PATENT SUBCLASS 337 / 343
.~.~.~.~ Snap-action

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
342  DF  .~.~.~ With spring or other energy storage means {1}
343.~.~.~.~ Snap-action {5}
344  DF  .~.~.~.~.~> With magnetic flux source (e.g., magnetic armature)
345  DF  .~.~.~.~.~> With toggle linkage
346  DF  .~.~.~.~.~> With frictional coupling or lost motion means
347  DF  .~.~.~.~.~> With adjusting or calibration means
348  DF  .~.~.~.~.~> With reset or reclosing means

DEFINITION

Classification: 337/343

(under subclass 342) Subject matter wherein the mechanical structure comprises means whereby a movable contact, or contacts, may be operated from a first position to a second position, quickly as by a snap action, the contact motion being independent of the rate of movement of the operator. This is usually accomplished by a spring connection between the operator and the contact carrier so arranged that the initial movement of an operator places a spring under tension whereby, upon release of a holding means, the contact is snapped from one position to another.

(1) Note. For other snap action mechanisms used in devices of this class, see SEARCH THIS CLASS, SUBCLASS below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53+, for corresponding subject matter in an electrothermal actuated switch. For other snap action mechanisms used in devices of this class, see the subclasses listed under SEARCH THIS CLASS, SUBCLASS.