Pressure fluid control valve device
US5427141A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1994 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Sep 19, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87708
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a pressure fluid control valve device, the fluid exhausted from an internal combustion engine flows through a pair of paths selectively or simultaneously. Each of the paths is opened and closed by a butterfly valve fixed to a valve shaft. A coupling for connecting the valve shafts across the paths comprises a slitting recess and a projection provided at the opposing ends of the valve shafts respectively. The direction of the surface of the recess and the projection is set to within 30 degrees with respect to the direction of the surface of the valve disc fixed to the valve shaft having the recess. Thus, the corner of the recess is not engaged with the bearing surface which is loaded, thereby making axial length for connecting the valve shafts to zero to manufacture the light and compact device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.