Governor valve device in a pressure fluid operated tool
US6488264B2 · kind B2 · utility
10Cited by
7References
18Claims
0Family size
Inventor
Key dates
| Filing date | May 16, 2001 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | May 16, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S137/901
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Governor valve device for a pressure fluid operated tool having a ball valve (23, 24), the valve ball (24) of which is provided in a cavity (25), open towards the seal ring (23) of the valve, in a movable piston (26). A spring-loaded member (30) urges the valve ball against the seal ring. By movement of the piston, the ball can be moved out of and into, respectively, a sealing position against the seal ring in order to permit and to prevent, respectively, the passage of pressure fluid to a drive chamber (17) in the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.