Method of making an axial miniature fuse with plastic molded bod

Details Method of making an axial miniature fuse with plastic molded bod Method of making an axial miniature fuse with plastic molded bod

1989-04-17

1990-10-30

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

29613, 29460, 295272, 264266, 26427216, 26427218, 228242, 228214, H01H 6902

Patent

active

049659251

ABSTRACT:
An improved electrical fuse having axial leads (5) and comprising a fuse wire in a cylindrical sleeve (2) supported at its ends by lead carrying end caps (3) is coated over the length of the fuse body by an adherent insulating layer of plastic (7). Improved humidity resistance and mechanical strength are achieved and control of coating thickness is improved. Use of hot plastic for the adherent insulating layer (7) reflows solder joint (4) reducing instances of open or high resistance fuses which must be rejected. Also, the i.sup.2 t performance is significantly improved over other adherent coatings.

REFERENCES:
patent: 3200471 (1965-08-01), Johnson et al.
patent: 3254282 (1966-05-01), West
patent: 3914863 (1975-10-01), Wiebe
patent: 4164725 (1979-08-01), Wiebe
patent: 4189083 (1980-02-01), Johnson et al.
patent: 4205431 (1980-06-01), Wiebe
patent: 4370292 (1983-01-01), Yanase et al.
patent: 4385281 (1983-05-01), McAlear
patent: 4460887 (1984-07-01), McAlear et al.

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