EP0684388A3 - Load-sensing active hydraulic control device. - Google Patents

Load-sensing active hydraulic control device. Download PDF

Info

Publication number: EP0684388A3
Authority: EP; European Patent Office
Prior art keywords: load; control device; hydraulic control; active hydraulic; sensing active
Prior art date: 1991-12-25
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

Application number

EP95202288A

Other languages

German (de)

French (fr)

Other versions

EP0684388B1 (en

EP0684388A2 (en

Inventor

Hideshi Koiwai

Hisato Naito

Yoshitake Yonekubo

Kenichi Nishiumi

Yoshimi Hasegawa

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

KYB Corp

Original Assignee

Kayaba Industry Co Ltd

Priority date (The priority date 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 date listed.)

1991-12-25

Filing date

1992-12-23

Publication date

1996-11-06

1991-12-25 Priority claimed from JP03357128A external-priority patent/JP3124094B2/en

1992-07-16 Priority claimed from JP21224492A external-priority patent/JPH0633904A/en

1992-08-26 Priority claimed from JP04250517A external-priority patent/JP3128775B2/en

1992-12-23 Application filed by Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd

1995-11-29 Publication of EP0684388A2 publication Critical patent/EP0684388A2/en

1996-11-06 Publication of EP0684388A3 publication Critical patent/EP0684388A3/en

1999-02-24 Application granted granted Critical

1999-02-24 Publication of EP0684388B1 publication Critical patent/EP0684388B1/en

2012-12-23 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2296—Systems with a variable displacement pump
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/163—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for sharing the pump output equally amongst users or groups of users, e.g. using anti-saturation, pressure compensation
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/166—Controlling a pilot pressure in response to the load, i.e. supply to at least one user is regulated by adjusting either the system pilot pressure or one or more of the individual pilot command pressures
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
- F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/25—Pressure control functions
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
- F15B2211/3053—In combination with a pressure compensating valve
- F15B2211/30555—Inlet and outlet of the pressure compensating valve being connected to the directional control valve
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40576—Assemblies of multiple valves
- F15B2211/40584—Assemblies of multiple valves the flow control means arranged in parallel with a check valve
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/46—Control of flow in the return line, i.e. meter-out control
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/47—Flow control in one direction only
- F15B2211/473—Flow control in one direction only without restriction in the reverse direction
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
- F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/575—Pilot pressure control
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/605—Load sensing circuits
- F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
- F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle valves
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
- F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/65—Methods of control of the load sensing pressure
- F15B2211/654—Methods of control of the load sensing pressure the load sensing pressure being lower than the load pressure
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
Mining & Mineral Resources (AREA)
Civil Engineering (AREA)
Structural Engineering (AREA)
Mechanical Engineering (AREA)
Fluid-Pressure Circuits (AREA)
Operation Control Of Excavators (AREA)

EP95202288A 1991-12-25 1992-12-23 Load-sensing active hydraulic control device Expired - Lifetime EP0684388B1 (en)

Applications Claiming Priority (7)

Application Number	Priority Date	Filing Date	Title
JP357128/91		1991-12-25
JP03357128A JP3124094B2 (en)	1991-12-25	1991-12-25	Control device for multiple actuators
JP212244/92		1992-07-16
JP21224492A JPH0633904A (en)	1992-07-16	1992-07-16	Load sensitive control device
JP04250517A JP3128775B2 (en)	1992-08-26	1992-08-26	Load-sensitive control device
JP250517/92		1992-08-26
EP19920311770 EP0550257B1 (en)	1991-12-25	1992-12-23	Device for controlling multiple hydraulic actuators

Related Parent Applications (2)

Application Number	Title	Priority Date	Filing Date
EP19920311770 Division EP0550257B1 (en)	1991-12-25	1992-12-23	Device for controlling multiple hydraulic actuators
EP92311770.9 Division		1992-12-23

Publications (3)

Publication Number	Publication Date
EP0684388A2 EP0684388A2 (en)	1995-11-29
EP0684388A3 true EP0684388A3 (en)	1996-11-06
EP0684388B1 EP0684388B1 (en)	1999-02-24

Family

ID=27329339

Family Applications (4)

Application Number	Title	Priority Date	Filing Date
EP95202287A Expired - Lifetime EP0684389B1 (en)	1991-12-25	1992-12-23	Control device for multiple hydraulic apparatus
EP95202286A Expired - Lifetime EP0684387B1 (en)	1991-12-25	1992-12-23	Load-sensing active hydraulic control device
EP95202288A Expired - Lifetime EP0684388B1 (en)	1991-12-25	1992-12-23	Load-sensing active hydraulic control device
EP19920311770 Expired - Lifetime EP0550257B1 (en)	1991-12-25	1992-12-23	Device for controlling multiple hydraulic actuators

Family Applications Before (2)

Application Number	Title	Priority Date	Filing Date
EP95202287A Expired - Lifetime EP0684389B1 (en)	1991-12-25	1992-12-23	Control device for multiple hydraulic apparatus
EP95202286A Expired - Lifetime EP0684387B1 (en)	1991-12-25	1992-12-23	Load-sensing active hydraulic control device

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
EP19920311770 Expired - Lifetime EP0550257B1 (en)	1991-12-25	1992-12-23	Device for controlling multiple hydraulic actuators

Country Status (2)

Country	Link
EP (4)	EP0684389B1 (en)
DE (4)	DE69229966T2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN104627880A (en) *	2014-12-31	2015-05-20	中联重科股份有限公司	Closed system, control method, hoisting system and crawler vehicle traveling system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19719228A1 (en) *	1997-05-07	1998-11-12	Bosch Gmbh Robert	Hydraulic control device for load-independent control of a double-acting engine
DE19831595B4 (en) *	1998-07-14	2007-02-01	Bosch Rexroth Aktiengesellschaft	Hydraulic circuit
FR2807118B1 (en) *	2000-03-28	2002-07-05	Mannesmann Rexroth Sa	HYDRAULIC CIRCUIT FOR OPERATING MULTIPLE HYDRAULIC RECEIVERS
BR112013010815A2 (en) *	2010-11-01	2016-08-16	Volvo Constr Equip Ab	a method for controlling a hydraulic system of a working machine
CN110671376B (en) *	2019-09-29	2021-03-12	中国矿业大学	Engineering machinery load sensitive-inlet-outlet independent hydraulic system and control method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3710699C1 (en) *	1987-03-31	1988-08-18	Heilmeier & Weinlein	Hydraulic control device for a consumer group
WO1990002882A1 (en) *	1988-09-09	1990-03-22	Atlas Copco Aktiebolag	Hydraulic driving system with a priority function for hydraulic motors
EP0433454A1 (en) *	1989-05-24	1991-06-26	Kabushiki Kaisha Komatsu Seisakusho	Hydraulic circuit apparatus

1992
- 1992-12-23 DE DE1992629966 patent/DE69229966T2/en not_active Expired - Fee Related
- 1992-12-23 DE DE1992628489 patent/DE69228489T2/en not_active Expired - Fee Related
- 1992-12-23 DE DE1992629968 patent/DE69229968T2/en not_active Expired - Fee Related
- 1992-12-23 EP EP95202287A patent/EP0684389B1/en not_active Expired - Lifetime
- 1992-12-23 DE DE1992625392 patent/DE69225392T2/en not_active Expired - Fee Related
- 1992-12-23 EP EP95202286A patent/EP0684387B1/en not_active Expired - Lifetime
- 1992-12-23 EP EP95202288A patent/EP0684388B1/en not_active Expired - Lifetime
- 1992-12-23 EP EP19920311770 patent/EP0550257B1/en not_active Expired - Lifetime

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3710699C1 (en) *	1987-03-31	1988-08-18	Heilmeier & Weinlein	Hydraulic control device for a consumer group
WO1990002882A1 (en) *	1988-09-09	1990-03-22	Atlas Copco Aktiebolag	Hydraulic driving system with a priority function for hydraulic motors
EP0433454A1 (en) *	1989-05-24	1991-06-26	Kabushiki Kaisha Komatsu Seisakusho	Hydraulic circuit apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN104627880A (en) *	2014-12-31	2015-05-20	中联重科股份有限公司	Closed system, control method, hoisting system and crawler vehicle traveling system

Also Published As

Publication number	Publication date
DE69229966D1 (en)	1999-10-14
DE69228489D1 (en)	1999-04-01
EP0684389A2 (en)	1995-11-29
EP0684387B1 (en)	1999-09-08
EP0550257B1 (en)	1998-05-06
DE69229968D1 (en)	1999-10-14
DE69228489T2 (en)	1999-09-30
EP0684388B1 (en)	1999-02-24
EP0684388A2 (en)	1995-11-29
EP0684389B1 (en)	1999-09-08
DE69229966T2 (en)	2000-03-09
DE69229968T2 (en)	2000-03-09
EP0550257A1 (en)	1993-07-07
EP0684389A3 (en)	1996-10-30
DE69225392D1 (en)	1998-06-10
DE69225392T2 (en)	1998-09-03
EP0684387A3 (en)	1996-10-30
EP0684387A2 (en)	1995-11-29

Publication	Publication Date	Title
DE59103179D1 (en)	1994-11-10	ELECTROHYDRAULIC PRESSURE CONTROL DEVICE.
DE69111589D1 (en)	1995-08-31	Device control.
FR2685420B1 (en)	1996-03-01	HYDRAULIC SELF-TENSIONER.
GR3027753T3 (en)	1998-11-30	Insecticidal device.
DE59202734D1 (en)	1995-08-03	HYDRAULIC CONTROL DEVICE.
DE59202093D1 (en)	1995-06-08	HYDRAULIC SYSTEM.
DE69200028D1 (en)	1994-01-13	Hydraulic braking device.
DE69204787D1 (en)	1995-10-19	Hydraulic unit.
DE59204690D1 (en)	1996-01-25	HYDRAULIC CONTROL DEVICE
EP0618371A3 (en)	1995-03-08	Hydraulic system.
ZA92426B (en)	1992-10-28	Load sensing hydraulic control system
DE59300811D1 (en)	1995-11-30	Control unit.
DE69207556D1 (en)	1996-02-22	Hydraulic control system
ITTO920871A1 (en)	1994-04-27	HYDRAULIC CONTROL.
DE59204606D1 (en)	1996-01-18	HYDRAULIC CONTROL DEVICE.
DE59207959D1 (en)	1997-03-06	HYDRAULIC CONTROL DEVICE
EP0684388A3 (en)	1996-11-06	Load-sensing active hydraulic control device.
EP0616450A3 (en)	1995-12-13	Communication control device.
EP0584813A3 (en)	1996-11-06	Anti-lock hydraulic control device
DE59204625D1 (en)	1996-01-18	HYDRAULIC CONTROL DEVICE.
DK29492D0 (en)	1992-03-04	FULL HYDRAULIC CONTROL UNIT
DE59205255D1 (en)	1996-03-14	HYDRAULIC CONTROL DEVICE
GR3017003T3 (en)	1995-11-30	Hydraulic unit.
GB9119508D0 (en)	1991-10-23	Hydraulic control system
DE59405062D1 (en)	1998-02-26	Hydraulic control device

Legal Events

Date	Code	Title	Description
1995-10-13	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
1995-11-29	AC	Divisional application: reference to earlier application	Ref document number: 550257 Country of ref document: EP
1995-11-29	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB
1996-09-20	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
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EP0684388A3 - Load-sensing active hydraulic control device. - Google Patents

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