Method for sealing arc discharge lamps
US4560357A · kind A · utility
5Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1984 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Jun 18, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A compact fluorescent lamp employs an inner exhaust tubulation formed from glass. The exhaust tubulation is non-invasively sealed after an outer lamp envelope is sealed by directing upon the exhaust tubulation an amount of focused, coherent radiation sufficient to heat the tubulation to its softening point. The outer envelope is transparent to the given radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.