Vacuum interrupter

Details Vacuum interrupter Vacuum interrupter

1981-07-16

1983-11-22

Goldberg, Elliot A.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200304, H01H 3300

Patent

active

044171102

ABSTRACT:
The invention provides a vacuum interrupter in which an evacuated envelope includes a cylindrical housing made of a metallic material, disc-shaped upper and lower end plates made of inorganic insulating material and stationary and movable contact rods. The envelope of the vacuum interrupter is manufactured by brazing the end plates to the housing by using a sealing member made of a plastically deformable metallic material which is deformed by thermal stress generated during a cooling process after hermetic brazing. The coefficient of the housing differs from that of the upper and lower end plates. According to the present invention, the sealing performance can be enhanced, even when the thermal coefficient of the housing differs from those of the end plates, since the sealing member is used.

REFERENCES:
patent: 3674958 (1972-07-01), Attia et al.
patent: 3727018 (1973-04-01), Wesoloski et al.
patent: 3812314 (1974-05-01), Nonken
patent: 3857005 (1974-12-01), Peche
patent: 4077114 (1978-03-01), Sakuma

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