Jacketed discharge lamp having oxidizable fail-safe switch
US4361782A · kind A · utility
9Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1980 |
| Grant date | Nov 30, 1982 |
| Priority date | — |
| Expiry date | Jun 26, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A jacketed discharge lamp which would release ultraviolet radiation in the event of fracture of the outer envelope is provided with a disabling fuse link which oxidizes in the event of breakage. The link consists of an alkaline earth metal film, suitably a barium film which may be deposited on a ceramic substrate for connection into the circuit. The outer envelope is evacuated or may contain an inert gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.