High pressure sodium discharge tube support structure
US4963791A · kind A · utility
0Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1989 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Sep 28, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J5/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reflector lamp having an outer reflector envelope filled with a rare gas at a pressure of approximately one atmosphere during lamp operation, a high pressure sodium discharge device within the outer envelope, and support conductors for mounting the discharge device. A sleeve over one of the support conductors helps prevent electrical breakdown through the rare gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.