Incandescent lamp comprising a glass bulb of tubular shape in which a filament is axially arranged
US6680572B1 · kind B1 · utility
2Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2000 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Mar 7, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K1/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An incandescent lamp comprising a glass bulb (3) of tubular shape in which a filament (4) is axially arranged. The end is hermetically sealed by means of a pinch (5) applied around a metal foil (1) to which an outer current lead (7) and an inner current lead (6) electrically connected to the filament are fixed. A second, intermediate flat foil (2) is connected directly to the end (9) of the filament, between the latter and the inner current lead (6), and the bulb is elbowed at the level of said second flat foil (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.