Thermal switch and method of making

Details Thermal switch and method of making Thermal switch and method of making

1977-10-21

1979-01-16

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With fusible, combustible or explosive material

337401, 337407, H01H 3776

Patent

active

041351762

ABSTRACT:
A thermal switch device for automatically opening a circuit when the ambient temperature is increased to a predetermined level. A pair of conductor wires arranged in side by side fashion are spring loaded into contact with one another by inserting the contact regions into a cup-shaped pellet of heat-fusible material. The cup is structurally secured within a nonconductive tubular casing with a layer of insulative cement. The lead regions of the wires are also securely anchored within the casing with an insulative cement.

REFERENCES:
patent: 1940176 (1933-12-01), Marshall
patent: 2149773 (1939-03-01), Huntley
patent: 3913054 (1975-10-01), Wolfe
patent: 3952274 (1976-04-01), Plasko
patent: 4016523 (1977-04-01), Sidor

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