Face sealing annular valve
US9051932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2011 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Oct 19, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7904
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a face sealing annular valve, an annular valve member is retained around or within a guide. The annular valve member is configured so that, when the annular valve member and the annular valve seat are coaxial, the spacing between the guide means and the guide-engaging surface region increases with distance along the central axis from a minimum of spacing between the annular valve member and the guide means. An end stop limits the tilt of the annular valve member. Advantageously, the annular valve member has restricted radial movement, enabling a good seal to be formed, while being unable to simultaneously contact diametrically opposite sides of the guide and jam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.