Arc tube end seal and method of forming
US4103200A · kind A · utility
22Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 1977 |
| Grant date | Jul 25, 1978 |
| Priority date | — |
| Expiry date | May 13, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved arc tube end seal and the method of forming that seal in a high pressure sodium discharge lamp is disclosed. The method includes precoating the refractory metal end cap with a slurry of metallic silicon and baking the end cap prior to accomplishing the bonding of the end cap to the arc tube with a conventional sealing frit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.