Radiant energy incandescent lamp
US4839559A · kind A · utility
5Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1988 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Feb 22, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K1/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric incandescent lamp for selective radiant energy distribution is disclosed which employs a reflective film for improved efficiency of the lamp operation. Said lamp further employs a tungsten filament extending the length of its elongated lamp envelope with particular support means for said incandescent filament also being disclosed to precisely position the filament along the principal lamp axis. Various structural configurations for said particular support means are also disclosed so that such filament position is maintained regardless of the lamp spatial orientation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.