Hybrid sealing technique
US6817918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2001 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Feb 28, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2209/261
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention is a hybrid sealing technique. According to one or more embodiments of the present invention, an unsealed lamp body is heated and a partial pinch seal is performed on a first side of the lamp body at an outer junction area. Then, a shrink seal is applied which completes the sealing process at the first side of the lamp body by sealing an inner junction area on the same side of the lamp body. The present invention retains the benefits of the shrink seal, but alleviates the difficulty associated with holding the electrode assemblies in place when performing a traditional shrink seal. In addition, the machine which holds the electrode assemblies in place is greatly simplified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.