Hydrostatic control device, particularly steering device
US4557676A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1983 |
| Grant date | Dec 10, 1985 |
| Priority date | — |
| Expiry date | Nov 10, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86638
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a hydrostatic steering control device of the type having two motor ports connectable to a servomotor and a metering unit for metering the flow of fluid to or from the servomotor in accordance with the rotational movement of a steering wheel for operating the control device. The invention is directed to a way of balancing the distributing valve of the control device by subjecting opposite sides thereof to high and intermediate pressure zones and providing a throttle gap between the high and intermediate pressure zones an a second oppositely acting throttle gap between the intermediate pressure zone and a third zone of lower pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.