Electric lamp with a threaded electrode
US5856726A · kind A · utility
11Cited by
23References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1996 |
| Grant date | Jan 5, 1999 |
| Priority date | — |
| Expiry date | Mar 15, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/0672
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric discharge lamp with an internally threaded electrode is disclosed. The lamp includes an envelope, a support rod, and an electrode can with an interior surface having a multiplicity of peaks, points, of sharp edge regions. These equal height prominences evenly extended around the inside wall of the electrode can. The threaded electrode yields a highly emissive electrode with no emissive material to be eroded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.