Hydraulic valve with pressure limiter
US9027589B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2010 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Aug 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7784
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An assembly of valve sections includes an inlet section, an outlet section, a working section, and a working section. The working section is a conventional pressure compensated working section. The working section includes a directional control valve, a pressure compensator valve, and a pressure limiter valve. The valves are of integral construction, such that each is an essential part to complete the other. The pressure compensator valve includes a pressure compensator spool movable between an opened position and a closed position in response to a pressure differential across the spool. The pressure limiter valve includes a pressure limiter spool that moves to an open position to change the pressure differential and close the pressure compensator valve when a selected limit pressure is reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.