Controlled seal for an expulsion fuse and method of...

H - Electricity – 01 – H

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18/1107, 26/112,

H01H 85/044 (2006.01) B29C 39/10 (2006.01) H01H 69/02 (2006.01) H01H 85/042 (2006.01) H01H 85/43 (2006.01) H01H 85/00 (2006.01)

Patent

CA 2030589

ABSTRACT OF THE DISCLOSURE 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.

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