Metal-to-ceramic butt seal with improved mechanical properties
US4656393A · kind A · utility
7Cited by
7References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1984 |
| Grant date | Apr 7, 1987 |
| Priority date | — |
| Expiry date | Oct 15, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J23/0275
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Seal (40) between travelling-wave tube electrodes (32 and 34) includes an inner hermetic seal ring (50) for providing vacuum sealing and an outer ring (52) which shares the mechanical stresses due to changes in temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.