Hydraulic valve means
US5331883A · kind A · utility
3Cited by
3References
3Claims
0Family size
Inventor
Key dates
| Filing date | Apr 8, 1993 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | Apr 8, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87201
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The disclosure is directed to a valve arrangement for controlling a linear or rotary hydraulic motor. The valve is connected to a pump which acts as a pressure medium source by the valve means and to a tank. The tank connection may be either direct or indirect. The arrangement of the present invention includes at least one seat valve located in a main flow connection between the pump and a port of the motor. Each of the seat valves would adjust the flow in the main flow connection to the motor via a pilot flow adjustable by a pilot valve. The pilot flow originates from the main flow through the seat valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.