Method of assembling a controlled seal for an expulsion fuse

Details Method of assembling a controlled seal for an expulsion fuse Method of assembling a controlled seal for an expulsion fuse

1990-06-20

1991-02-26

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

H01H 6902

Patent

active

049958860

ABSTRACT:
A high voltage circuit interrupter, having telescopic tubular insulating and conducting casings, contains an expulsion end sealing construction which hermetically seals and controls the expulsion rate of the interrupter. The expulsion end includes a sleeve, a thin, rupturable diaphragm affixed against the sleeve by cyanoacrylate cement, and an end cap. Epoxy cement is applied into the cap so that the space between the diaphragm and the end cap are filled forming a sealant layer therebetween. A main ferrule secures the strain element, and an auxiliary ferrule secures both the main ferrule and the end cap onto the end of the tubular insulating casing.

REFERENCES:
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patent: 3401243 (1968-09-01), Upton, Jr. et al.
patent: 3401244 (1968-09-01), Patterson
patent: 3401245 (1968-09-01), Cameron
patent: 3401246 (1968-09-01), Patterson
patent: 3855563 (1974-12-01), Cameron et al.
patent: 4208787 (1980-06-01), Luck et al.
patent: 4746381 (1988-05-01), Parker et al.

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