Exhaust head for compact fluorescent lamps
US4925422A · kind A · utility
0Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1988 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Oct 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An exhaust head unit for compact fluorescent lamps comprises an exhaust head block, a double rubber seal arranged in the block and serving for the reception of exhaust tubes, a vacuum valve, a gas valve, and a diaphragm for regulating the gas flow, as well as a vacuum duct and a gas duct. The vacuum valve, the gas valve and the adjoining vacuum and gas ducts are all arranged within a single exhaust head block, the diaphragm of the gas flow simultaneously constituting the seat of the gas valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.