Vacuum discharge device
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsShinichi Aoki, Kiyoshi Matsuyama
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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.
Claims19
A vacuum discharge device comprising:
- an insulating envelop provided with metallic layers respectively at the opposite ends thereof;
- a pair of electrodes disposed opposite to each other within the insulating envelop;
- and
- sealing members brazed respectively to the metallic layers formed in the opposite ends of the insulating envelop and maintained at the same potential as that of the electrodes;
- characterized in that the insulating envelop is a hollow, generally cylindrical ceramic member having an internally and externally corrugated wall, and the outer creeping length and inner creeping length of the insulating envelop are greater than the distance between the sealing members or between the metallic layers.
Dependencies are inferred from the claim text.