Variable displacement hydraulic servomotor system
US4907408A · kind A · utility
11Cited by
6References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1988 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Apr 22, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B1/324
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A bidirectional hydraulic servomotor system includes a variable-displacement motor which may impel or brake movement of a load member that either resists or assits movement by the servomotor, respectively. The direction of load movement is under control of a directional control valve with motor displacement and function (impelling or braking) being effected automatically to achieve controlled load movemement with minimal consumption of hydraulic fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.