Flow passages for control valves
US5273072A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Feb 24, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86654
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to providing an improved control valve having input and return flow passages that are hydraulically-balanced by virtue of each having a similar flow configuration for fluid flow therethrough. The input and return flow passages are formed to define input and return flow control orifices, respectively, configured for minimizing the possibility of the jet flow issuing from either input or return flow control orifices from impinging upon a surface in juxtaposition to the flow control orifice itself. Thus, the possibility of partial "flow back" into the flow control orifice is eliminated which, in turn, also prevents any significant reduction in the flow control orifice area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.