Valve improvements
US4844414A · kind A · utility
7Cited by
35References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1988 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Jun 3, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S251/90
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Valve assemblies having valve seats and/or valve members with conical surfaces which cause an included O-ring to roll upon and wedge between the valve member and the seat for reliably closing the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.