Fusion sealed glass lamp unit
US4654760A · kind A · utility
41Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1985 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Dec 4, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V17/101
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved sealing construction is provided for an all glass lamp unit utilizing lens and reflector members which enhances the mechanical strength and hermetic seal when these lamp components are fusion sealed together. Specifically, the sealing rim surfaces of said lamp components are each provided with cooperating and opposing rib elements to permit direct physical abutment therebetween and thereby avoid forming void spaces in the sealing rim region when the fusion seal is made.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.