Thermal fuse

Details Thermal fuse Thermal fuse

1987-06-09

1988-09-13

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

29851, 29852, 164 34, H01H 6902

Patent

active

047699027

ABSTRACT:
A thermal fuse is formed by a conductive path formed in a ceramic body, the path being of a fusible alloy. A ceramic substrate and a ceramic cover, both in green form, are fused together with defined channels. The channels can be defined by a material which is burnt out, preferably when the ceramic members are fused together. The channels can be defined in other ways. The channels are filled with a fusible alloy leaving an air layer, end contacts being provided. Several channels can be formed in one assembly. The assembly can then be cut into separate fuses, each with one channel.

REFERENCES:
patent: 2134752 (1938-11-01), Ehlers
patent: 4030004 (1977-06-01), Rutt
patent: 4189760 (1980-02-01), Marshall
patent: 4652967 (1987-03-01), Sakabe et al.

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