Hydraulic motor control
US4194365A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1978 |
| Grant date | Mar 25, 1980 |
| Priority date | — |
| Expiry date | Jun 8, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S60/911
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A control system for stopping a hydraulic motor in a predetermined position comprises a valve connected in parallel across the motor, the valve having a closed position and an open position in which flow is via a throttle orifice. When the motor is being driven normally the valve is closed. When the main control regulator for the motor is moved to stop the motor, the valve is automatically opened to allow limited fluid flow through the motor during a slowing down phase. A detector senses when the motor is a predetermined distance from its desired stopping position, and moves the valve to its closed position. Overload valves are provided to prevent overpressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.