Cross-flow controlling valve
US4261381A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 1978 |
| Grant date | Apr 14, 1981 |
| Priority date | — |
| Expiry date | Feb 7, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2567
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A cross-flow controlling valve for a hydropneumatic vehicle suspension has a casing formed with three ports of which two communicate with longitudinally terminal portions of a bore in the casing. A piston is freely slidable in the bore between two terminal positions. Longitudinally spaced shoulder portions of the bore bound a transversely open, longitudinal groove in the piston which is longer than the intermediate portion of the casing bore connecting the terminal bore portions. Each shoulder portion is dimensioned to bound a throttling gap connecting the groove with one of the terminal bore portions when the shoulder portion is received in the intermediate bore portion. The groove in the piston permanently communicates with the third casing port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.