Electrode structure including a rod comprising refractory metal and having a greater thermal conductivity material
US5874805A · kind A · utility
7Cited by
10References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Feb 24, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrode structure for use in a sealed arc lamp is described. The electrode structure includes a tungsten containing rod surrounded by a block of sintered tungsten containing powder. The block may be impregnated with a thermally conductive material such as copper, silver or braze, and may have a high thermal emissivity surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.