Self cleaning valve assembly
US8297303B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Jun 8, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4273
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A self cleaning valve assembly includes a valve body having an internal valve cavity. A cylinder member received in the valve cavity has a first sealing surface and a cylinder wall, and divides the valve cavity into a liquid-free cavity portion and a flow cavity portion. A spindle includes a spindle body contacting the first sealing surface to continuously prevent pressurized fluid in the flow cavity portion from entering the liquid-free cavity portion. A spindle piston end has a wiper member in a receiving groove frictionally contacting the cylinder wall. A handle pinned to the valve assembly directly contacts the piston end. Handle rotation displaces the spindle from a valve closed to a valve open position permitting pressurized fluid flow into the flow cavity portion. The wiper member wipes a contaminant off the cylinder wall and further prevents contaminant entrance into the liquid-free cavity portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.