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Class Information
Number: 337/390
Name: Electricity: electrothermally or thermally actuated switches > Thermally actuated switches > With longitudinally expansible solid element > With manual or other mechanical contact control means > With spring or other energy storage means > Snap-action
Description: Subject matter including significant details of means whereby the opening or closing contact motion is caused to take place abruptly and is not dependent on the rate of movement of the thermally responsive element. The contact movement is usually accomplished by a spring connection between the operator and the movable contact in such a manner that the initial movement of the thermally responsive element or other actuating means places the spring under tension, as by a toggle, until released whereupon the movable contact is snapped to open or closed position by the energy stored in the spring.

Sub-classes under this class:

Class Number Class Name Patents
337/391 With flexible vane or plate 7

Patents under this class:

Patent Number Title Of Patent Date Issued
8576042 Miniature circuit breaker Nov. 5, 2013
8302883 Thermal protection for a heated fuel injector Nov. 6, 2012
8274355 Trip device Sep. 25, 2012
6127913 Thermal protector Oct. 3, 2000
5612662 Thermal fuse and method for its activation Mar. 18, 1997
4400679 Snap acting switch for thermostats Aug. 23, 1983
4374373 Multiple contacts, snap-action, thermal switch Feb. 15, 1983
4166995 Thermostatic snap switch Sep. 4, 1979
4136324 Expansion box temperature regulator for electric appliances Jan. 23, 1979
4107638 Thermostat Aug. 15, 1978

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