Method, composition, and means for limiting lead wire arcing in an arc discharge lamp
US5449971A · kind A · utility
11Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1993 |
| Grant date | Sep 12, 1995 |
| Priority date | — |
| Expiry date | Aug 31, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A material is provided on the lead wires that support a filament of a fluorescent lamp assembly to inhibit arcing associated with filament burnout. The material comprises a glass that is non-alkaline. Another preferred arrangement is to incorporate a material into the assembly that will release an arc inhibiting gas in response to arcing of the lead wires. For example, a calcium carbonate or strontium carbonate material releases carbon dioxide to terminate undesired lead wire arcing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.