Counter pressure valve arrangement
US12326741B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2023 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Nov 28, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/8609
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A counter pressure valve arrangement for controlling a pressure level of a hydraulic fluid in a return line from a hydraulic actuator arrangement. The counter pressure valve arrangement comprises a counter pressure valve having: a moveable valve member; a counter pressure regulating port configured for being connected to the hydraulic actuator arrangement via the return line; a tank port configured for being connected to a tank or low pressure reservoir for storing low pressure hydraulic fluid; and a pump port configured for being connected to a source of pressurised hydraulic fluid. A first position of the valve member effects fluid communication between the pump port and the counter pressure regulating port for supplying pressurised hydraulic fluid to the return line (4), and a second position of the valve member effects fluid communication between the counter pressure regulating port and the tank port for discharging hydraulic fluid from the return line to the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.