Vacuum sealing apparatus
US3977428A · kind A · utility
3Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1975 |
| Grant date | Aug 31, 1976 |
| Priority date | — |
| Expiry date | Jul 20, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6579
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vacuum tight seal is obtained at the end of a glass or quartz ampule by apparatus comprising a threaded piece of Teflon slipped over the end of the ampule and a termination member of glass with matching threads having means for coupling to other apparatus and an optional cooling jacket screwed onto said threaded piece with a seal means made up of silicone rubber U-rings with interposed spacer rings of Teflon therebetween. An optional diaphram valve made of polyvinyl chloride and having a diaphram member of fluoroelastomer is also shown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.