Flow force reduction by incremental pressure drop
US8322372B2 · kind B2 · utility
2Cited by
16References
20Claims
0Family size
Inventors
Key dates
| Filing date | May 24, 2010 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Jul 12, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86775
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid flow control device for improving, for example, valve operation by reducing “error forces” occurring due to fluid communication between ports of a valve having two or more ports. Incremental pressure drop passages bleed incrementally the flow of fluid between first an second ports as the valve spool is moving between the first and second positions to decrease the pressure differential generated force exerted on the spool whereby the energy required to be applied to the spool for moving the spool between the first and second positions is decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.