Dual trace valve system
US5746239A · kind A · utility
3Cited by
22References
57Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1995 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Sep 19, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6579
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve system includes a valve and apparatus for supplying fluids to the valve. The valve includes a valve enclosure and a valve stem movable through the valve enclosure. The valve enclosure includes a valve body and a valve bonnet. The valve system includes a first fluid supply to supply fluid to the region of the valve stem that moves through the valve enclosure, and second and third fluid supplies to supply fluid to a region of contact between the valve body and valve bonnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.