Controlled seal for an expulsion fuse and method of assembling s

Details Controlled seal for an expulsion fuse and method of assembling s Controlled seal for an expulsion fuse and method of assembling s

1989-12-04

1990-08-28

Broome, H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337220, 337249, H01H 7120, H01H 7322, H01H 8502

Patent

active

049529005

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:
patent: 2590524 (1952-03-01), Edwards
patent: 3401243 (1968-09-01), Upton, Jr.
patent: 3401244 (1968-09-01), Patterson
patent: 3401245 (1968-09-01), Cameron
patent: 3401246 (1968-09-01), Patterson
patent: 3855563 (1974-12-01), Cameron

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