Cryogenic valve
US6019118A · kind A · utility
8Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1998 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Feb 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0491
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Cryogenic valve with at least one pair of sealing elements, preferably one with a seat and a tappet, whose seat surfaces are in sealing contact with one another in the shutoff position. At least one sealing element of the pair is formed of a linearly superelastic shape memory alloy, which is stabilized by plastic cold working in the martensitic textural state, i.e., no longer displays a shape memory effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.