Vacuum discharge device
US4896008A · kind A · utility
11Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1988 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Sep 27, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/66292
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.