Fugitive emission reducing valve arrangement
US8453676B2 · kind B2 · utility
4Cited by
7References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2010 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | May 30, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87917
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve including a valve body having a bore and a spindle received in the bore, the spindle being actuatable to open and close the valve. A compression gland seal is provided about the spindle for compression between the spindle and the bore. A first seal ring is provided about the spindle at a position spaced along the spindle from the gland seal, and provides a seal between the spindle and the bore of the valve body. A second seal ring is provided about the spindle at a position spaced along the spindle from the gland seal and the first seal ring, and provides a further seal between the spindle and the bore of the valve body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.