Bidirectional fluid control valve
US6003551A · kind A · utility
17Cited by
25References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1996 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Jul 8, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86759
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bidirectional flow fluid control valve having increased flow capacity in a flow down condition, a flow up condition or, preferably, in both flow conditions. The valve has a curved surface on the top portion of the valve plug or on the inner annular surface of the body web below the valve seat. Preferably, the valve has curved surfaces in both locations. A variety of radii of curvature at those locations have been found to increase flow capacity. Adjacent the curved portions of the valve plug surface or the body web inner annular surface, uncurved portions may be employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.