Circular fluorescent lamp unit
US4258287A · kind A · utility
23Cited by
10References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1979 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Jun 13, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hub for a circular fluorescent lamp unit, containing a ballast reactor and provided with a screw base. The hub housing comprises two housing members fitted together at their rims by means of a ridge on one member and a groove in the other member. An outwardly extending flange is provided on one of the housing members at the rim thereof, for seating a circular light assembly positioned around the hub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.