Temperature sensitive switch

Details Temperature sensitive switch Temperature sensitive switch

1976-09-28

1977-10-11

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337348, H01H 6100

Patent

active

040538591

ABSTRACT:
A temperature sensitive switch has openable and closable electric contacts, a two-position bimetallic element and a two-position bistable element, both coupled to the contacts. At a predetermined maximum temperature, the bimetallic element moves from a first position to a second position and thereby opens the contacts and also moves the bistable element from a first position into a second position. The bistable element, in its second position, maintains the contacts open independently from the position of the bimetallic element, until the bistable element is reset from its second position to its first position, and thus the contacts are closed, by an external (manual) resetting force.

REFERENCES:
patent: 2714644 (1955-08-01), Harrison
patent: 3379843 (1968-04-01), Shaffer et al.

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