Vacuum discharge device

Details Vacuum discharge device Vacuum discharge device

1988-09-27

1990-01-23

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3366

Patent

active

048960080

ABSTRACT:
A vacuum discharge device comprising an insulating envelop having metallic layers formed by a metallizing process respectively on the opposite ends thereof, electrodes disposed within the insulating envelop, and sealing members brazed respectively to the metallic layers. The insulating envelop is a hollow, cylindrical ceramic member having a substantially uniform wall thickness between each wavy inner ridges, or each crest of wavy ridges. The inner creeping length and outer creeping length of the insulating evelop are greater than the distance between the sealing members or between the metallic layers.

REFERENCES:
patent: 3167629 (1965-01-01), Corbine
patent: 3590184 (1968-12-01), Wachta
patent: 3857005 (1974-12-01), Peche
patent: 4757166 (1988-07-01), Slade

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