Control valve device
US6394130B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2000 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Mar 2, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87885
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control valve device controls the movement of at least one hydraulic user. Relative movement of a control spool valve of a control valve with respect to a housing controls the connection of at least one hydraulic connection that is in communication with the user with a delivery connection and with a reservoir connection. The control spool valve can be moved relative to the housing by an actuator device. The housing has a multi-layer construction consisting of plates connected with one another by soldering or another adhesive, which plates comprise intermediate plates that are located between two end plates. The thickness (D) of the end plates is greater than the thickness (d) of the intermediate plates, whereby the end plates are provided with a fastening device for the actuator device and/or of connection devices for the hydraulic lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.