DE3279180D1 - Dual control input flow control valve - Google Patents
Dual control input flow control valveInfo
- Publication number
- DE3279180D1 DE3279180D1 DE8282901677T DE3279180T DE3279180D1 DE 3279180 D1 DE3279180 D1 DE 3279180D1 DE 8282901677 T DE8282901677 T DE 8282901677T DE 3279180 T DE3279180 T DE 3279180T DE 3279180 D1 DE3279180 D1 DE 3279180D1
- Authority
- DE
- Germany
- Prior art keywords
- control
- pressure
- differential
- valve
- response
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000009977 dual effect Effects 0.000 title 1
- 239000012530 fluid Substances 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
- F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Flow Control (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The valve bypasses fluid supplied from the pump either in response to one control input e.g. variation in the area of metering orifice. This controls a constant pressure differential, at a preselected level between valve inlet pressure and the load pressure, or in a response to another control input, e.g. modification in the pressure of control signal. This varies the level of the control differential between valve inlet pressure and the load pressure, while this control differential is automatically maintained constant at each controlled level by the valve controls receiving low energy control signals to their amplifying stage. In this way a load can be controlled in response to either input providing identical control performance, or the variable pressure differential control can be superimposed on the control action controlling fluid flow by variation in the area of the metering orifice.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1982/000481 WO1983003644A1 (en) | 1982-04-19 | 1982-04-19 | Dual control input flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3279180D1 true DE3279180D1 (en) | 1988-12-08 |
Family
ID=22167939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8282901677T Expired DE3279180D1 (en) | 1982-04-19 | 1982-04-19 | Dual control input flow control valve |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0113708B1 (en) |
| JP (1) | JPS59500574A (en) |
| DE (1) | DE3279180D1 (en) |
| WO (1) | WO1983003644A1 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL169628C (en) * | 1971-06-29 | 1982-08-02 | Ind En Handelmaatschappij Kopp | CONTROL DEVICE FOR LAST-DEPENDENT CONTROL OF HYDRAULIC DRIVE DEVICES. |
| JPS4828884A (en) * | 1971-08-19 | 1973-04-17 | ||
| US4153075A (en) * | 1975-11-26 | 1979-05-08 | Tadeusz Budzich | Load responsive control valve |
| US4282898A (en) * | 1979-11-29 | 1981-08-11 | Caterpillar Tractor Co. | Flow metering valve with operator selectable boosted flow |
| US4285195A (en) * | 1980-01-02 | 1981-08-25 | Tadeusz Budzich | Load responsive control system |
| US4330991A (en) * | 1980-01-02 | 1982-05-25 | Tadeusz Budzich | Load responsive system controls |
| US4327627A (en) * | 1980-01-07 | 1982-05-04 | Tadeusz Budzich | Load responsive fluid control valve |
| US4327763A (en) * | 1980-01-11 | 1982-05-04 | Tadeusz Budzich | Dual control input flow control valve |
| US4325289A (en) * | 1980-01-11 | 1982-04-20 | Tadeusz Budzich | Load responsive fluid control valve |
| US4333389A (en) * | 1980-01-18 | 1982-06-08 | Tadeusz Budzich | Load responsive fluid control valve |
-
1982
- 1982-04-19 WO PCT/US1982/000481 patent/WO1983003644A1/en active IP Right Grant
- 1982-04-19 JP JP57501658A patent/JPS59500574A/en active Pending
- 1982-04-19 EP EP19820901677 patent/EP0113708B1/en not_active Expired
- 1982-04-19 DE DE8282901677T patent/DE3279180D1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0113708B1 (en) | 1988-11-02 |
| JPS59500574A (en) | 1984-04-05 |
| EP0113708A4 (en) | 1986-02-10 |
| EP0113708A1 (en) | 1984-07-25 |
| WO1983003644A1 (en) | 1983-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |