EP0088017A3 - Displacement control of a hydraulic amplifier shaft, and application in a hydraulic directional spool valve - Google Patents
Displacement control of a hydraulic amplifier shaft, and application in a hydraulic directional spool valve Download PDFInfo
- Publication number
- EP0088017A3 EP0088017A3 EP83400385A EP83400385A EP0088017A3 EP 0088017 A3 EP0088017 A3 EP 0088017A3 EP 83400385 A EP83400385 A EP 83400385A EP 83400385 A EP83400385 A EP 83400385A EP 0088017 A3 EP0088017 A3 EP 0088017A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- application
- spool valve
- displacement control
- directional spool
- 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 title 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
- F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
- F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
- F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
- F15B9/10—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8203239 | 1982-02-26 | ||
| FR8203239 | 1982-02-26 | ||
| FR8205928 | 1982-04-06 | ||
| FR8205928 | 1982-04-06 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0088017A2 EP0088017A2 (en) | 1983-09-07 |
| EP0088017A3 true EP0088017A3 (en) | 1984-04-04 |
| EP0088017B1 EP0088017B1 (en) | 1987-11-19 |
Family
ID=26222776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19830400385 Expired EP0088017B1 (en) | 1982-02-26 | 1983-02-25 | Hydraulic directional spool valve |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0088017B1 (en) |
| DE (1) | DE3374578D1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2541391B1 (en) * | 1983-02-17 | 1987-08-07 | Outillage Air Comprime | PROPORTIONAL HYDRAULIC DISTRIBUTION DEVICE AND APPLICATION TO A HYDRAULIC DISTRIBUTOR, A PRESSURE LIMITER, A FLOW REGULATOR AND A HYDRAULIC MACHINE |
| EP0117209A1 (en) * | 1983-02-17 | 1984-08-29 | COMPAGNIE PARISIENNE D'OUTILLAGE A AIR COMPRIME Société anonyme dite: | Servo flow regulator |
| FR2547664B1 (en) * | 1983-06-17 | 1986-04-18 | Outillage Air Comprime | FLOW SERVO REGULATOR |
| EP0117208A1 (en) * | 1983-02-17 | 1984-08-29 | COMPAGNIE PARISIENNE D'OUTILLAGE A AIR COMPRIME Société anonyme dite: | Hydraulic pressure servolimiter |
| DE3313317A1 (en) * | 1983-04-13 | 1984-10-18 | Integral Hydraulik & Co, 4000 Düsseldorf | Electro-hydraulic two-stage proportional directional control valve |
| DE3339578A1 (en) * | 1983-11-02 | 1985-05-09 | Volkswagenwerk Ag, 3180 Wolfsburg | Device for compression control |
| US4907492A (en) * | 1987-06-16 | 1990-03-13 | Sig Schweizerische Industrie-Gesellschaft | Apertured valve disposed in hollow piston rod of follower-type motor |
| DE4007648A1 (en) * | 1990-03-10 | 1991-09-12 | Friedhelm Dr Ing Schnuerle | PNEUMATIC OR HYDRAULIC PISTON-CYLINDER UNIT WITH SERVO CONTROL |
| AU3770293A (en) * | 1992-03-23 | 1993-10-21 | Cwf Hamilton & Co Limited | Hydraulic cylinder feedback control |
| DE19537417C2 (en) * | 1995-10-07 | 1997-07-24 | Eurocopter Deutschland | Hydraulic actuator |
| JP3494858B2 (en) * | 1997-07-29 | 2004-02-09 | 株式会社荏原製作所 | Hydraulic servo device |
| FR2806760B1 (en) * | 2000-03-24 | 2002-07-12 | Imeca | DEVICE FOR CONTROLLING THE MOVEMENT OF AN ACTUATOR ROD |
| US7735517B2 (en) * | 2006-12-22 | 2010-06-15 | Caterpillar Inc | Rotary-actuated electro-hydraulic valve |
| US8074558B2 (en) | 2008-04-30 | 2011-12-13 | Caterpillar Inc. | Axial piston device having rotary displacement control |
| EP2848821B1 (en) * | 2013-09-12 | 2016-11-02 | Start Elevator S.r.l. | Flow control and check valve for a hydraulic control circuit of a lifting installation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1304686A (en) * | 1960-08-02 | 1962-09-28 | Plessey Co Ltd | Servo-controlled hydraulic distributor |
| GB1116632A (en) * | 1965-10-12 | 1968-06-12 | Chandler Evans Inc | Fluid-pressure servo-motor positioning apparatus |
| US3511132A (en) * | 1967-11-18 | 1970-05-12 | Rexroth Gmbh G L | Hydraulic power amplifier |
| DE2127375A1 (en) * | 1970-08-27 | 1972-03-02 | Saito T | Liquid pulse cylinder for numerical control |
| FR2112323A1 (en) * | 1970-10-21 | 1972-06-16 | Schneider Co Optische Werke | |
| FR2268966A1 (en) * | 1974-11-29 | 1975-11-21 | Poclain Sa | Hydraulically operated ram - has main rod with bore accommodating rotary auxiliary rod with spiral grooves and ramps |
| FR2407375A1 (en) * | 1977-10-31 | 1979-05-25 | Commercial Shearing | SERVO-MECHANISM TRANSFORMING A LOW FORCE ROTARY MOVEMENT INTO A HYDRAULICALLY ASSISTED LINEAR MOVEMENT |
-
1983
- 1983-02-25 EP EP19830400385 patent/EP0088017B1/en not_active Expired
- 1983-02-25 DE DE8383400385T patent/DE3374578D1/en not_active Expired
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1304686A (en) * | 1960-08-02 | 1962-09-28 | Plessey Co Ltd | Servo-controlled hydraulic distributor |
| GB1116632A (en) * | 1965-10-12 | 1968-06-12 | Chandler Evans Inc | Fluid-pressure servo-motor positioning apparatus |
| US3511132A (en) * | 1967-11-18 | 1970-05-12 | Rexroth Gmbh G L | Hydraulic power amplifier |
| DE2127375A1 (en) * | 1970-08-27 | 1972-03-02 | Saito T | Liquid pulse cylinder for numerical control |
| FR2112323A1 (en) * | 1970-10-21 | 1972-06-16 | Schneider Co Optische Werke | |
| FR2268966A1 (en) * | 1974-11-29 | 1975-11-21 | Poclain Sa | Hydraulically operated ram - has main rod with bore accommodating rotary auxiliary rod with spiral grooves and ramps |
| FR2407375A1 (en) * | 1977-10-31 | 1979-05-25 | Commercial Shearing | SERVO-MECHANISM TRANSFORMING A LOW FORCE ROTARY MOVEMENT INTO A HYDRAULICALLY ASSISTED LINEAR MOVEMENT |
Non-Patent Citations (1)
| Title |
|---|
| ANTRIEBSTECHNIK, vol. 10, no. 4, avril 1971, pages 119-124, Mainz, DE. * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0088017A2 (en) | 1983-09-07 |
| DE3374578D1 (en) | 1987-12-23 |
| EP0088017B1 (en) | 1987-11-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): DE FR GB IT SE |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Designated state(s): DE FR GB IT SE |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COMPAGNIE PARISIENNE D'OUTILLAGE A AIR COMPRIME SO |
|
| 17P | Request for examination filed |
Effective date: 19840925 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
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| AK | Designated contracting states |
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| REF | Corresponds to: |
Ref document number: 3374578 Country of ref document: DE Date of ref document: 19871223 |
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| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
| ITF | It: translation for a ep patent filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
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| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
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| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
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