Thermal switch

Details Thermal switch Thermal switch

1985-06-12

1987-02-24

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337342, 337356, 337367, H01H 3770, H01H 3752

Patent

active

046460543

ABSTRACT:
A thermal switch for breaking an electrical circuit to prevent overheating s described. The thermal switch includes a bimetallic thermocouple in the form of a snap disc and a leaf spring. The leaf spring supports an electrical contact. When the leaf spring is in its stressed position, the electrical contact keeps an electrical circuit closed. When the temperature rises too high, the snap disc snaps in a direction which causes the leaf spring to move into its unstressed position, thereby opening the circuit. When the temperature has decreased, the switch can be reset.

REFERENCES:
patent: 4092623 (1978-05-01), Kirkup
patent: 4554525 (1985-11-01), Bayer

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