Hydrostatic drives
US4738102A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1986 |
| Grant date | Apr 19, 1988 |
| Priority date | — |
| Expiry date | Oct 2, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/7135
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydrostatic drive with an adjustable pump and several consumers is provided in which one or several consumers simultaneously can be selectively connected with the pump, in which case the connection to a consumer can be effected by an arbitrarily actuable control valve having a throttling effect in the intermediate positions, where the loading of the adjusting element of the pump is controlled by a pump adjusting valve, which in turn is regulated by the pressure differential arising at the regulated control valve so that it is regulated to a constant pressure differential, where the highest prevailing pressure in a line between the regulated control valve and the regulated consumer is conveyed through a control pressure line to the control pressure chamber on the spring side of the pump adjusting valve and where a pressure limiting valve is connected to the pump delivery line and provided on the spring side with a control pressure chamber connected with the control pressure line (load-sensing signal line).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.