Control apparatus for a plurality of simultaneously actuatable fluid motors
US4165613A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1978 |
| Grant date | Aug 28, 1979 |
| Priority date | — |
| Expiry date | Mar 27, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/78
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control apparatus is disclosed for permitting simultaneous actuation of a plurality of fluid motors whose combined flow capacity exceeds the available flow rate. The plurality of fluid motors are actuated by a corresponding plurality of open center, pressure-compensated, pneumatically actuated control valves which are connected in series flow arrangement with a fluid supply having a fixed minimum flow output and a maximum flow rate output. A device is provided to sense the rate of flow for hydraulic fluid exhausting from the series of control valves. The rate of flow sensing device controls a pneumatic pressure regulator that provides a corresponding pressure change in the pneumatic supply pressure provided to a plurality of control valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.