Evacuation port and closure for dewars
US6568194B1 · kind B1 · utility
1Cited by
11References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2001 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Jan 17, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49925
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved dewar design that accelerates the manufacturing process of a dewar. In a preferred embodiment, the dewar includes an evacuation port that may be larger in size by a factor of ten over the size of evacuation ports of conventional dewars. The oversized evacuation port, however, does not result in an increase in the overall size or profile of the dewar. The dewar is evacuated and hermetically sealed using an re-usable evacuation tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.