Spring centered balanced resolver valve
US4024797A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1975 |
| Grant date | May 24, 1977 |
| Priority date | — |
| Expiry date | Oct 28, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2567
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic system including a source of pressurized fluid, a plurality of hydraulic motors with a plurality of control valves for directing fluid from the source to the motors, a dual-stage relief valve for the system for normally establishing a first pressure for part of the system for some of the motors and a second pressure for part of the system for the remainder of the motors and responsive to at least a pair of the control valves of the system for establishing the higher pressure includes a balanced resolver valve disposed between the pair of directional control valves and the relief valve and operative to prevent simultaneous communication of the pair of valves with the relief valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.