Method of manufacturing a single-ended incandescent lamp
US5380230A · kind A · utility
9Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1993 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Sep 14, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K1/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An incandescent lamp having a filament with an integral support portion between its ends which bears against the lamp envelope for supporting the filament therein is produced. The integral support portion includes a length of electrically conductive support wire enclosed within the filament, the filament being continuously coiled over the entire length of said support wire. Accordingly to a favorable embodiment, the support wire is a retained length of winding mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.