Two member boost stage valve for a hydraulic control
US4537220A · kind A · utility
10Cited by
11References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1983 |
| Grant date | Aug 27, 1985 |
| Priority date | — |
| Expiry date | Feb 28, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87193
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a two stage hydraulic servo amplifier wherein the boost stage valve comprises two separate valve members, each individually controlling one of a pair of controlled outputs and wherein the position of each valve member is modulated by inputs from a pilot stage acting against separate biasing forces for each valve member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.