Arrangement for influencing the operating quantity of a servomotor
US4364304A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1981 |
| Grant date | Dec 21, 1982 |
| Priority date | — |
| Expiry date | Oct 26, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87233
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a fluid pressure supply and exhaust system for controlling a two part servomotor wherein relative loads are anticipated for one side of the servomotor. The system has a switching valve unit for selecting parallel supply and exhaust branches to direct supply fluid to the servomotor side subjected to negative loading. There are pressure regulating and throttling valves in the supply branch and a reducing valve in the exhaust branch. The supply pressure downstream from the throttle valve is directed to the reducing valve with a valve closing effect so that a sharp negative load will simultaneously reduce the supply pressure to the servomotor while increasing the throttling of the return flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.