Active hydraulic pressure control
US5135070A · kind A · utility
6Cited by
8References
71Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1991 |
| Grant date | Aug 4, 1992 |
| Priority date | — |
| Expiry date | Jul 30, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87169
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An active hydraulic pressure control system includes a sensor, a valve, a controller and an actuator. In accordance with a broad aspect of the present invention, the controller determines a pressure differential between the pressure sensed by the sensor in a high pressure supply line of a hydraulic system and a predetermined pressure. In response to such pressure differential, the actuator drives the valve which has a variable flow orifice to communicate hydraulic fluid between the high pressure supply line and a reservoir of hydraulic fluid to eliminate the pressure differential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.