Thermal fuse

Details Thermal fuse Thermal fuse

1986-12-16

1988-02-23

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With fusible, combustible or explosive material

337407, H01H 3776

Patent

active

047273488

ABSTRACT:
A thermal fuse has an insulative tubular case, two lead wires, a lead wire separating tool, an electrode plate consisting of two conductive metal plates deposited with fusible alloy which fuses at a preset temperature and an elastic body which presses the electrode plate. When the fusible alloy fuses at a preset temperature, the elastic body is released from compression and its top end portion is inserted in a cavity of the lead wire separating tool so that one end of each of the conductive metal plates is released from contact with the lead wire and the electric circuit between the lead wires is opened.

REFERENCES:
patent: 3956725 (1976-05-01), Merrill et al.
patent: 4179679 (1979-12-01), Houghland
patent: 4255736 (1981-03-01), Kelley et al.
patent: 4297669 (1981-10-01), Gale

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