Method and system for improving stability of hydraulic systems with load sense
US7261030B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2005 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Oct 30, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/654
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic circuit is disclosed that can include a flow control element, a pressure compensator connected via a pair of load sense lines to an inlet line and an outlet line, respectively, of a flow control element to provide a constant pressure drop across the flow control element, and a load sense line control valve installed in a load sense line to provide controllable resistance in a flow passage in opposite flow directions, the resistance in each flow direction being different. The load sense line control valve can include a restrictive orifice followed by a spring-loaded check valve in a first flow direction and at least one other restrictive orifice and a check valve in a second flow direction, the second flow direction opposing the first flow direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.