Stop valve
US8336850B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Apr 29, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7796
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A stop valve is provided for a hydraulic system. The stop valve includes a valve slide that can be moved to a closed position and to an open position. A blocking device for limiting the activation of the valve slide is provided at an intermediate position located between the closed position and the open position, wherein, in this intermediate position, the opening cross section of the stop valve equals only a fraction of the opening cross section present in the open position. The blocking device is constructed such that limiting the activation of the valve slide by the blocking device is realized as a function of a pressure difference value between a pressure in front of and a pressure behind the stop valve, wherein the limiting can be canceled when the value falls below a given pressure difference value. This guarantees a pressure balance controlled according to the flow when the stop valve is opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.