EP1659087A3 - Hydraulic arrangement - Google Patents

Hydraulic arrangement Download PDF

Info

Publication number
EP1659087A3
EP1659087A3 EP05111001A EP05111001A EP1659087A3 EP 1659087 A3 EP1659087 A3 EP 1659087A3 EP 05111001 A EP05111001 A EP 05111001A EP 05111001 A EP05111001 A EP 05111001A EP 1659087 A3 EP1659087 A3 EP 1659087A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic
hydraulic cylinder
switching valve
holding device
control
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.)
Withdrawn
Application number
EP05111001A
Other languages
German (de)
French (fr)
Other versions
EP1659087A2 (en
Inventor
Marcus Bitter
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.)
Deere and Co
Original Assignee
Deere and Co
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.)
Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP1659087A2 publication Critical patent/EP1659087A2/en
Publication of EP1659087A3 publication Critical patent/EP1659087A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02Installations or systems with accumulators
    • F15B1/021Installations or systems with accumulators used for damping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • B66F9/0655Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted with a telescopic boom
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075Constructional features or details
    • B66F9/20Means for actuating or controlling masts, platforms, or forks
    • B66F9/22Hydraulic devices or systems
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2203Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • E02F9/2207Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2217Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2221Control of flow rate; Load sensing arrangements
    • E02F9/2225Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E02F9/2228Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/226Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2278Hydraulic circuits
    • E02F9/2292Systems with two or more pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • F15B11/0445Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out" with counterbalance valves, e.g. to prevent overrunning or for braking
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/50Pressure control
    • F15B2211/505Pressure control characterised by the type of pressure control means
    • F15B2211/50563Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50581Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/625Accumulators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/63Electronic controllers
    • F15B2211/6303Electronic controllers using input signals
    • F15B2211/6336Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/80Other types of control related to particular problems or conditions
    • F15B2211/86Control during or prevention of abnormal conditions
    • F15B2211/8616Control during or prevention of abnormal conditions the abnormal condition being noise or vibration
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/80Other types of control related to particular problems or conditions
    • F15B2211/86Control during or prevention of abnormal conditions
    • F15B2211/863Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

Es wird eine hydraulische Anordnung (10) für ein Federungssystem beschrieben. Die Anordnung (10) umfasst einen Hydraulikzylinder (26), einen Hydrauliktank (20), ein Fördermittel (18), einen Hydraulikspeicher (48), ein Steuergerät (12), ein zwischen Hydraulikspeicher (48) und Hydraulikzylinder (26) angeordnete Lasthalteeinrichtung (32) und ein zwischen Hydraulikspeicher (48) und Steuergerät (12) angeordnetes Schaltventil (60). Um eine Federungsfunktion für den Hydraulikzylinder (26) zu ermöglichen und gleichzeitig eine Absicherung des Hydraulikzylinders (26) und des Hydraulikspeichers (48) gegen Druckabfall bei Rohrbruch zu gewährleisten, wird vorgeschlagen, das Schaltventil (60) und die Lasthalteeinrichtung (32) über eine Steuerdruckeinrichtung (70) synchron anzusteuern, wobei bei aktivierter Federungsfunktion die Lasthalteeinrichtung (32) aufgesteuert und das Schaltventil (60) in Schließstellung gebracht wird.

Figure imgaf001
A hydraulic arrangement (10) for a suspension system is described. The arrangement (10) comprises a hydraulic cylinder (26), a hydraulic tank (20), a conveying means (18), a hydraulic accumulator (48), a control device (12), a load-holding device (47) arranged between the hydraulic accumulator (48) and the hydraulic cylinder (26). 32) and between hydraulic accumulator (48) and control unit (12) arranged switching valve (60). In order to enable a suspension function for the hydraulic cylinder (26) and at the same time to ensure protection of the hydraulic cylinder (26) and the hydraulic accumulator (48) against pressure drop at pipe break, it is proposed, the switching valve (60) and the load holding device (32) via a control pressure device (70) to control synchronously, wherein when the suspension function is activated, the load holding device (32) is opened and the switching valve (60) is brought into the closed position.
Figure imgaf001

EP05111001A 2004-11-23 2005-11-21 Hydraulic arrangement Withdrawn EP1659087A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004056418A DE102004056418B4 (en) 2004-11-23 2004-11-23 Hydraulic arrangement

Publications (2)

Publication Number Publication Date
EP1659087A2 EP1659087A2 (en) 2006-05-24
EP1659087A3 true EP1659087A3 (en) 2012-05-30

Family

ID=35999463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05111001A Withdrawn EP1659087A3 (en) 2004-11-23 2005-11-21 Hydraulic arrangement

Country Status (3)

Country Link
US (1) US7530434B2 (en)
EP (1) EP1659087A3 (en)
DE (1) DE102004056418B4 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005033154A1 (en) * 2005-07-13 2007-01-18 Deere & Company, Moline Hydraulic arrangement
DE102006032599A1 (en) 2006-07-14 2008-02-07 Deere & Company, Moline Hydraulic arrangement
RO122787B1 (en) * 2006-07-24 2010-01-29 Sorin Dinu Device for the recovery of the energy released during the lowering operation of an equipment arm
EP1914353A3 (en) 2006-10-19 2011-04-20 Hitachi Construction Machinery Co., Ltd. Construction machine
US7827787B2 (en) 2007-12-27 2010-11-09 Deere & Company Hydraulic system
JP4875641B2 (en) * 2008-02-25 2012-02-15 株式会社クボタ Work vehicle suspension structure
DE102008060350A1 (en) 2008-12-03 2010-06-10 Bayerische Motoren Werke Aktiengesellschaft Method for automatically switching off an internal combustion engine
DE102008061790A1 (en) * 2008-12-11 2010-07-08 Bayerische Motoren Werke Aktiengesellschaft Method for automatically switching off and starting an internal combustion engine
DE102010043135A1 (en) * 2010-10-29 2012-05-03 Deere & Company Hydraulic arrangement
US8538640B2 (en) 2010-12-24 2013-09-17 Komatsu Ltd. Travel damper control device for wheel loader
US20130168073A1 (en) * 2011-12-30 2013-07-04 Cnh America Llc Work vehicle fluid heating system
JP2014118985A (en) * 2012-12-13 2014-06-30 Kobelco Contstruction Machinery Ltd Hydraulic circuit for construction machine
JP6155159B2 (en) * 2013-10-11 2017-06-28 Kyb株式会社 Hybrid construction machine control system
DE102014000695A1 (en) * 2014-01-14 2015-07-16 Hydac System Gmbh Device for locking and for pressure adjustment
JP5852707B2 (en) 2014-06-11 2016-02-03 アイダエンジニアリング株式会社 Die cushion device
JP5950980B2 (en) * 2014-11-07 2016-07-13 Kyb株式会社 Control valve device
JP6370769B2 (en) * 2015-12-15 2018-08-08 日立建機株式会社 Transportation vehicle
EP3267046A1 (en) 2016-07-07 2018-01-10 DANA ITALIA S.r.l. System for recovering energy from a hydraulic actuator
CN106144937B (en) * 2016-08-16 2019-02-05 武汉船用机械有限责任公司 Band brake hydraulic emergency system
US10246854B2 (en) 2016-10-26 2019-04-02 Wacker Neuson Production Americas Llc Material handling machine with ride control system and method
JP6386115B1 (en) 2017-02-27 2018-09-05 アイダエンジニアリング株式会社 Die cushion device
GB201715063D0 (en) * 2017-09-19 2017-11-01 Jaguar Land Rover Ltd Actuator system
US10954650B2 (en) * 2018-02-28 2021-03-23 Deere & Company Hydraulic derate stability control
US11525238B2 (en) 2018-02-28 2022-12-13 Deere & Company Stability control for hydraulic work machine
US10954654B2 (en) * 2018-02-28 2021-03-23 Deere & Company Hydraulic derate stability control and calibration
US11293168B2 (en) 2018-02-28 2022-04-05 Deere & Company Method of limiting flow through accelerometer feedback
CN108482049B (en) * 2018-03-01 2021-05-28 燕山大学 Energy feedback type active suspension hydraulic control system for emergency rescue vehicle
US11512447B2 (en) 2018-11-06 2022-11-29 Deere & Company Systems and methods to improve work machine stability based on operating values
DE102019120504A1 (en) * 2019-07-30 2021-02-04 Linde Material Handling Gmbh Industrial truck with a lifting device
DE202020104190U1 (en) 2020-07-21 2021-10-22 Liebherr-Werk Nenzing Gmbh Hydraulic system for a fallback support and work device
KR20220154485A (en) * 2021-05-13 2022-11-22 볼보 컨스트럭션 이큅먼트 에이비 Hydraulic machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1157963A2 (en) * 2000-05-25 2001-11-28 J.C. Bamford Excavators Limited Hydraulic system for wheeled loader
EP1188587A2 (en) * 2000-05-25 2002-03-20 Husco International, Inc. Regenerative suspension for an off-road vehicle
FR2851592A1 (en) * 2003-02-21 2004-08-27 Hydrokit Front loader for e.g. agriculture vehicle, has obturation unit closing fluid supply duct when fluid flow in duct exceeds preset value to immobilize lifting arm, and regulator interposed between distributor and obturation unit
EP1657213A1 (en) * 2004-11-12 2006-05-17 Parker Hannifin Aktiebolag Ride control system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58121305A (en) * 1982-01-11 1983-07-19 Kobe Steel Ltd Hydraulic circuit for maintaining expansion and contraction of hydraulic cylinder
JPH0815998B2 (en) * 1989-10-14 1996-02-21 株式会社神戸製鋼所 Vibration suppressor for wheeled crane
JP3100771B2 (en) * 1992-07-14 2000-10-23 ナルデック株式会社 Vehicle suspension device
US5642282A (en) * 1995-03-10 1997-06-24 Isuzu Motors Ltd. Apparatus for controlling attitude of a road vehicle cab
DE19734658A1 (en) * 1997-08-11 1999-02-18 Mannesmann Rexroth Ag Hydraulic control arrangement for a mobile work machine, in particular for a wheel loader
ZA99618B (en) * 1998-01-27 1999-07-27 Atlas Copco Wagner Inc Roll-resistant hydraulic suspension system, kit and method for load handling vehicle.
DE10104298A1 (en) * 2000-05-11 2001-11-15 Mannesmann Rexroth Ag Hydraulic control device for damping travel vibrations of mobile work apparatus involves hydro-cylinder supporting work tool, cylinder chambers of which are connectable via control valve arrangement with pressure medium source or tank
US6394238B1 (en) * 2000-05-25 2002-05-28 Husco International, Inc. Regenerative suspension for an off-road vehicle
DE10227966A1 (en) * 2002-06-22 2004-01-08 Deere & Company, Moline Hydraulic control arrangement for a mobile machine
ATE372296T1 (en) * 2003-07-05 2007-09-15 Deere & Co HYDRAULIC SUSPENSION
DE102005038333A1 (en) * 2005-08-11 2007-02-15 Deere & Company, Moline Hydraulic arrangement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1157963A2 (en) * 2000-05-25 2001-11-28 J.C. Bamford Excavators Limited Hydraulic system for wheeled loader
EP1188587A2 (en) * 2000-05-25 2002-03-20 Husco International, Inc. Regenerative suspension for an off-road vehicle
FR2851592A1 (en) * 2003-02-21 2004-08-27 Hydrokit Front loader for e.g. agriculture vehicle, has obturation unit closing fluid supply duct when fluid flow in duct exceeds preset value to immobilize lifting arm, and regulator interposed between distributor and obturation unit
EP1657213A1 (en) * 2004-11-12 2006-05-17 Parker Hannifin Aktiebolag Ride control system

Also Published As

Publication number Publication date
DE102004056418A1 (en) 2006-05-24
EP1659087A2 (en) 2006-05-24
US20060108185A1 (en) 2006-05-25
DE102004056418B4 (en) 2013-02-28
US7530434B2 (en) 2009-05-12

Similar Documents

Publication Publication Date Title
EP1659087A3 (en) Hydraulic arrangement
EP1898101A3 (en) Method for actuating the hydraulic storage device for a geared device
JP2006300280A (en) Hydraulic cylinder circuit
EP1520994A3 (en) Hydraulic arrangement and related procedure
WO2011057773A3 (en) Machine press
EP2124123A3 (en) Pressurizing and pressure regulating valve and fuel supply system employing the same
EP1704793A3 (en) Liquid cosmetic case
EP1754836A3 (en) Charger
EP1897846A3 (en) Charging device
EP2375086A3 (en) Hydraulic assembly
EP2202496A3 (en) Piston-type dosing device with supervised valve
EP1738994A3 (en) Opening device
EP1101692A3 (en) Hydraulic operating device
EP1803678A3 (en) Operation device for a loading crane
EP2025978A3 (en) Direction control valve for a windscreen cleaning device in a motor vehicle
CA2482892A1 (en) A device and method for gripping at least one elongated element
ES2195490T3 (en) STABILIZATION DEVICE FOR A VEHICLE.
EP1571267A3 (en) Suspension device
EP2233998A3 (en) Pressure control valve
DE602005013196D1 (en) Hydraulic device for lifting and lowering a pivotable on a working machine arm
EP0805300A3 (en) Control system for a suction equipment
EP2175161A3 (en) Valve device with amplitude-dependent damping force
EP1568892A3 (en) Flow control apparatus for construction heavy equipment
DE502004009132D1 (en) Electrohydraulic control device and method for its shutdown
DE202010005070U1 (en) hydraulic valve

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

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

RIC1 Information provided on ipc code assigned before grant

Ipc: E02F 9/22 20060101ALI20120423BHEP

Ipc: B66F 9/22 20060101ALI20120423BHEP

Ipc: F15B 1/02 20060101ALI20120423BHEP

Ipc: B66F 9/065 20060101AFI20120423BHEP

17P Request for examination filed

Effective date: 20121130

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

RIC1 Information provided on ipc code assigned before grant

Ipc: E02F 9/22 20060101ALI20150922BHEP

Ipc: B66F 9/065 20060101AFI20150922BHEP

Ipc: B66F 9/22 20060101ALI20150922BHEP

Ipc: F15B 1/02 20060101ALI20150922BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20151110

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20160322