Valve part of a hydraulic control valve for controlling flows of pressurized medium
US8118060B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2008 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Dec 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86702
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve part of a hydraulic control valve for controlling flows of pressurized medium is provided, wherein the valve part includes a cylindrical valve housing with a first cylinder casing section extending in the axial direction and a first cylinder base section extending perpendicular to the axial direction, with the sections defining a valve housing hollow space that is open on one side. The first cylinder casing section is provided with a first work connection, a second work connection, and a pressure connection, each of which open into the valve housing hollow space. A cylindrical control piston is held in the valve housing hollow space so that it can move in the axial direction, and has a second cylinder casing section extending in the axial direction and a second cylinder base section extending perpendicular to the axial direction, with these sections defining a control piston hollow space that is open on one side. The second cylinder casing section adjacent to the second cylinder base section is provided with a radial discharge connection opening into the control piston hollow space, and the control piston is constructed such that the work connections can be connected select…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.