Hydraulic piston pump with servo displacement control
US5201637A · kind A · utility
4Cited by
3References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1991 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Oct 28, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B1/26
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable displacement hydraulic piston pump and servo displacement control which combines a rotary vane type actuator and a port plate to obtain both servo and actuation functions for a hydraulic piston pump. The control includes a construction which provides feel to the operator for how much work is being performed. The control also incorporates a failsafe mechanism so that the control is capable of transmitting torque to manually stroke the pump if charge pressure is lost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.