EP1220992B1 - Vorsteuergerät - Google Patents
Vorsteuergerät Download PDFInfo
- Publication number
- EP1220992B1 EP1220992B1 EP00979379A EP00979379A EP1220992B1 EP 1220992 B1 EP1220992 B1 EP 1220992B1 EP 00979379 A EP00979379 A EP 00979379A EP 00979379 A EP00979379 A EP 00979379A EP 1220992 B1 EP1220992 B1 EP 1220992B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pilot
- valves
- handles
- control
- operable
- 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 - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
- G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
- G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
- G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, 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
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices 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
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
-
- 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
- E02F9/2004—Control mechanisms, e.g. control levers
-
- 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
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks
- F15B13/0424—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks the joysticks being provided with electrical switches or sensors
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
- G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
- G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
- G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
- G05G2009/04774—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks with additional switches or sensors on the handle
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87056—With selective motion for plural valve actuator
- Y10T137/87072—Rotation about either of two pivotal axes
Definitions
- the invention relates to a pilot control device, at least two mechanically operated and two electrically or electro-hydraulically actuable control valves can be controlled.
- pilot control devices are used in particular in the case of mobile work devices, for example, telehandlers are used.
- About the Pilot devices are aggregates of the working device, for example a shovel, fork, lifting cylinder, brushes or work platform driven.
- a pilot control device is disclosed in DE 296 04 210 U1 which an actuating plate can be pivoted via a handle (joystick) is to mechanically actuate actuators from four control valves actuate.
- a handle pivotstick
- another Swivel lever provided, which is operatively connected to the handle stands.
- DE 196 30 798 describes one Known solution in which a switch is executed on the handle is controlled via the hydraulically adjustable directional valves. More precisely, a changeover valve is operated via an electrical switch operated between two hydraulically operated directional valves switches so that by the output signal of a pressure reducing valve the consumer connected to the activated directional valve can be controlled. The control of the other directional valve sets a switchover of the switchover valve and an activation of the Pressure reducing valve ahead.
- a telescopic rod with a work platform and another tool such as a fork
- this is how the platform and other tools are controlled via the pilot control unit. That is, in the one switch position of the switch the platform is unlocked, for example, while in the other switch position, the other tool, such as the Fork is tilted or raised.
- this can Version unlocks the working platform instead of the inclination of the fork be, so that a risk to those standing on the platform Workers and equipment is not excluded.
- the object of the invention is a pilot control device to create, which minimizes the risk of incorrect operation is.
- This task is carried out by a pilot control device with the features of claim 1 solved.
- the mechanically actuated is controlled Control valves via a swivel lever that can be moved in two easy steps is executed.
- Each of the handles carries a switching element, via that only one assigned electrically / electrohydraulically controllable Control is controllable.
- each control element is therefore its own Assigned switching element, the switching elements spatially such are spaced from each other that an incorrect operation is almost impossible is.
- the operator must therefore consciously use one of the handles detect and actuate the switching element formed on it, to control the connected consumer.
- the control the mechanically actuable control valves are carried out according to the invention by pivoting the swivel lever, whereby it does not matter plays through which handle the swivel lever is operated.
- the pilot valve according to the invention is characterized by a extremely compact structure, because for example six control valves just one common lever with two separate switching elements is required.
- the switching elements for Control of the electrically operated control valves as a potentiometer are executed.
- the potentiometer can be adjusted time-dependent or by adjusting a slide switch.
- the pilot control device with four mechanically operated proportional valves, by swiveling the one with two handles Swivel lever can be actuated.
- anyone can Handle can still be provided with switches for control other units can be used.
- the pilot control unit is particularly cheap from an ergonomic point of view designed when the two handles or holding sections are arranged in a v-shape to each other.
- a handle with a potentiometer and two switches will be the actuator for the potentiometer preferably formed in the central plane of the handle while the two switches are arranged on both sides of the central plane of the handle are.
- the pilot control device according to the invention can be particularly advantageous use with telescopic handlers.
- the pilot control device 1 shown in the figure has two handles 2, 4, which are pivotally mounted in a housing block 6 and can be operated via the four pressure reducing valves (DRV).
- DVR pressure reducing valves
- the other two pressure reducing valves are located on the same pitch circle above or below the drawing level.
- the four pressure reducing valves 8, 10 can be used to aggregates a mobile working device, for example a boom or a Activate the fork of a telehandler.
- Each of the handles 2, 4 carries on the operator's facing Front a switch 12 for operating a potentiometer and two switching buttons 14, 16 for actuating switching elements. Via the switch 12 of the potentiometer and the connected Control lines 18 and 19 each have a signal to an electrically or electrohydraulically operated pilot valve 20, 22 deliver, which are only indicated schematically in the figure are.
- the two handles 2, 4 are fixed via a coupling element 24 connected with each other.
- This coupling element 24 has two fork-shaped Legs 26, 28, on which the handle 2 or 4 is attached.
- the two legs 26, 28 converge in a journal 30, the is screwed into a socket of a joint piece 32.
- This has a swivel joint 34 designed as a universal joint or the like, which allows pivoting of the handles 2, 4 such that one or two of the pressure reducing valves 8, 10 can be actuated. That is, the two handles 2, 4 can be practically in any direction swing out of the drawing plane.
- the two handles 2, 4 converge in a V-shape towards the coupling element 24 arranged.
- This relative arrangement of the two handles 2, 4 can reach around a handle to actuate a of the two pilot valves 20, 22 take place very quickly.
- the V-shaped relative arrangement allows critical applications also two-handed operation, so that both pilot valves 20, 22 can be controlled simultaneously.
- the two handles 2, 4 could also be sections be carried out on a closed control element, the for example with a circumferential rim similar to a steering wheel etc. can be executed.
- the joint piece 32 has one removed from the handles 2, 4 Ring shoulder a control surface 36 against the four actuators 38, 40 to operate the four directly operated pressure reducing valves 8, 10 (two of the actuators are not shown) are.
- the actuators 38, 40 are each guided in guide bushes 42, each inserted into a valve bore 44 of the housing block 6 are.
- a central one can be located above each of the pressure reducing valves 8, 10 Pressure connection P of the housing block 6, each with a working connection A1, A3 (the two other work connections not shown A2, A4 are above or below the drawing plane) or a tank connection T can be connected.
- the housing block 6 is closed off by a housing cover 68, on which a bellows encompassing the actuators 38, 40 72 is fixed, which prevents the ingress of dirt.
- the structure of the pressure reducing valves 8, 10 used is per se known, so that only the description below the essential components is limited.
- each pressure reducing valve 8, 10 has one radially widened section through which a spring chamber 46 is formed is.
- a support bush 48 On the peripheral walls of the spring chamber 46 is a support bush 48 performed, the return spring 50 against the associated Actuator 38 and 40 and in the direction of a stop position against the assigned guide bush 42 is biased.
- the actuators 38, 40 are against the return springs 50 in their contact position Control surface 36 acted upon.
- the return spring 50 is on the of the guide sleeve 42 distant annular surface of the spring chamber 46 is supported.
- Each pressure reducing valve 8, 10 has a control piston 52 which is guided in the radially recessed part of the valve bore 44.
- everyone Control piston 52 has a transverse bore 54 which does not have a shown axial bore with the to the lower (view according to the Figure) end face of the control piston 52 adjacent pressure chamber connected is.
- the pressure connection P and the tank connection T are over one Pressure channel 56 or a tank channel 58 indicated by dash-dotted lines, 60 with the valve bores 44 or with the spring chambers 46 of the four Pressure reducing valves 8, 10 connected.
- each actuator 38, 40 has one Axial recess in which the end portion of the control piston 52 with the stop screw 62 can dip.
- Control piston 54 carries a spring plate 64 on which a control spring 66 attacks that on the adjacent end face of the support bushing 48 is supported.
- the control piston 52 is in via this control spring 66 biased its illustrated position with respect to the support bush 48, this position by the impact of the stop screw 62 is determined on the adjacent end face of the support bush 48.
- Of the return spring 50 becomes the control piston 52 via the support bush 48 brought into the basic position shown, in which the connection between the pressure port P and the associated working port A Is blocked.
- One or two actuators By pivoting one of the handles from the shown One or two actuators become the basic position in a swivel position of the four pressure reducing valves 8, 10 shifted axially downwards, while the remaining actuators of the two or three others Pressure reducing valves remain in their basic position.
- the assigned support bush 48 against the force of the return spring 50 in the illustration below moved so that a corresponding change in the bias the control spring 46, which is also supported on the support bushing 48 he follows.
- the control piston 52 By increasing the bias of the control spring 66 the control piston 52 moves out of the basic position shown, so that about the transverse bore 54 and not shown thereby Axial bore the connection between the pressure channel P and the assigned work port A is turned on.
- That pressure at the working connection A the lower end face of the Control piston 52 with a force against the spring force of the control spring 66 acts.
- the bias of the control spring 66 can be by Change the swivel position of the handles 2, 4. if the on the end face pressure force at the working connection A the set spring force of the control spring 66, the control piston 52 moved into a control position in which by connection the working connection A with the tank connection T or the pressure connection P in the working connection A corresponds to the force of the control spring 66 Pressure is maintained. That is, the pressure at the work connection A becomes dependent on the swivel position of the handles 2, 4 kept constant.
- the control of the electrically / electro-hydraulically operated Pilot valves 20, 22 is carried out by actuating the switch 12 of the Handle 2 or handle 4.
- These switches 12 can, for example be designed as a slider, the setting of Potentiometers via the slide adjustment, as a button, whereby the potentiometer setting depending on the duration of the Button actuation depends, or as rotary knobs.
- pilot valve 22 In the event that the operator operates the pilot valve 22 wants, for example, the right handle 2 in the figure detected and the switch 12 actuated, so that on the associated signal line 18 issued a control signal to the pilot valve 20, 22 and the connected consumer is controlled. at Control of the other pilot valve 22 must in the figure left handle 4 can be detected and actuated in a corresponding manner.
- a pilot control device via which at least two are mechanical Actuable control valves and two electrically or electrohydraulically actuatable control valves are controllable.
- the pilot control device has a swivel lever with two handles on which each have a switching element for controlling the electrical / electro-hydraulic actuable control valves is provided.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Transportation (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Control Devices (AREA)
- Mechanically-Actuated Valves (AREA)
- Servomotors (AREA)
Description
Claims (9)
- Vorsteuergerät mit einem, vorzugsweise zumindest zwei mechanisch betätigbaren Steuerventilen (8, 10) die über einen Schwenkhebel betätigbar sind und mit einem Schaltelement zur elektrischen Ansteuerung von zumindest zwei weiteren, elektrisch/elektrohydraulisch betätigbaren Vorsteuerventilen (20, 22), dadurch gekennzeichnet, daß der Schwenkhebel zwei jeweils zumindest einem elektrisch betätigbaren Vorsteuerventil (20, 22) zugeordnete Handgriffe (2, 4) hat, von denen jeder ein Schaltelement (12) zur Betätigung eines der elektrisch betätigbaren Vorsteuerventile (20, 22) trägt.
- Vorsteuergerät nach Patentanspruch 1, dadurch gekennzeichnet, daß das Schaltelement ein Potentiometer zur proportionalen Ansteuerung der Vorsteuerventile (20, 22) hat.
- Vorsteuergerät nach Patentanspruch 2, dadurch gekennzeichnet, daß das Potentiometer über eine Schiebetaste des Handgriffs (2, 4) betätigbar ist.
- Vorsteuergerät nach einem der vorhergehenden Patentansprüche, gekennzeichnet durch vier mechanisch proportional betätigbare Steuerventile (8, 10), von denen eines oder zwei gemeinsam durch Verschwenkung der Handgriffe (2, 4) betätigbar sind.
- Vorsteuergerät nach einem der vorhergehenden Patentansprüche, dadurch gekennzeichnet, daß jeder Handgriff (2, 4) zumindest einen Schalter (16) zur Ansteuerung zumindest eines weiteren Ventils hat.
- Vorsteuergerät nach einem der vorhergehenden Patentansprüche, dadurch gekennzeichnet, daß die mechanisch betätigten Ventile Druckreduzierventile (8, 10) sind.
- Vorsteuergerät nach einem der vohergehenden Patentansprüche, dadurch gekennzeichnet, daß die beiden Handgriffe (2, 4) v-förmig zueinander angeordnet sind.
- Vorsteuergerät nach Patentanspruch 7, dadurch gekennzeichnet, daß eine Betätigungstaste (12) für das Potentiometer als Schieber ausgeführt ist, dessen Schiebeachse in der Mittelebene des jeweiligen Handgriffs (2, 4) ausgebildet ist und eine Symmetrieachse für zwei beabstandete Schalttasten (14, 16) bildet.
- Vorsteuergerät nach einem der vorhergehenden Patentansprüche, dadurch gekennzeichnet, daß das Vorsteuergerät einem mobilen Arbeitsgerät, beispielsweise einem Teleskopstapler zugeordnet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999149802 DE19949802A1 (de) | 1999-10-15 | 1999-10-15 | Vorsteuergerät |
DE19949802 | 1999-10-15 | ||
PCT/DE2000/003323 WO2001029428A2 (de) | 1999-10-15 | 2000-09-25 | Vorsteuergerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1220992A2 EP1220992A2 (de) | 2002-07-10 |
EP1220992B1 true EP1220992B1 (de) | 2004-01-14 |
Family
ID=7925797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00979379A Expired - Lifetime EP1220992B1 (de) | 1999-10-15 | 2000-09-25 | Vorsteuergerät |
Country Status (4)
Country | Link |
---|---|
US (1) | US6932113B1 (de) |
EP (1) | EP1220992B1 (de) |
DE (2) | DE19949802A1 (de) |
WO (1) | WO2001029428A2 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2854668B1 (fr) * | 2003-05-05 | 2006-07-07 | Rexroth Sa | Distributeur de fluide sous pression a guide double |
FI121973B (fi) * | 2005-05-17 | 2011-06-30 | Polarteknik Pmc Oy Ab | Venttiilirakenne |
DE102006012030A1 (de) * | 2006-03-14 | 2007-09-20 | Robert Bosch Gmbh | Hydraulische Ventilanordnung |
DE102006018706A1 (de) | 2006-04-21 | 2007-10-25 | Robert Bosch Gmbh | Hydraulische Steueranordnung |
DE102007029355A1 (de) | 2007-06-26 | 2009-01-02 | Robert Bosch Gmbh | Hydraulische Steueranordnung |
DE102007029358A1 (de) | 2007-06-26 | 2009-01-02 | Robert Bosch Gmbh | Verfahren und hydraulische Steueranordnung zur Druckmittelversorgung zumindest eines hydraulischen Verbrauchers |
DE102008018936A1 (de) * | 2008-04-15 | 2009-10-22 | Robert Bosch Gmbh | Steueranordnung zur Ansteuerung eines Wegeventils |
DE102010006196A1 (de) * | 2010-01-29 | 2011-08-04 | Robert Bosch GmbH, 70469 | Hydraulisches Vorsteuergerät |
RU2457999C2 (ru) * | 2010-08-27 | 2012-08-10 | Общество с ограниченной ответственностью "Научно-производственное предприятие "Резонанс" | Система безопасности строительной машины (варианты) |
US8380402B2 (en) | 2010-09-14 | 2013-02-19 | Bucyrus Intl. Inc. | Control systems and methods for heavy equipment |
US8979208B2 (en) * | 2013-01-08 | 2015-03-17 | Caterpillar Inc. | Transmission and hoist control arrangement |
KR101335954B1 (ko) * | 2013-01-18 | 2013-12-04 | (주)제일피엠씨 | 누유 방지 구조를 구비한 조이스틱 파일럿 밸브 |
DE102016118458A1 (de) | 2016-09-29 | 2018-03-29 | Jungheinrich Aktiengesellschaft | Verfahren zur Bedienung eines Flurförderzeugs mit einem Bedienelement |
CN106351906B (zh) * | 2016-11-15 | 2019-02-15 | 湖南凯恩利液压机械制造有限公司 | 一种溢流阀 |
CN106892051B (zh) * | 2017-03-16 | 2022-05-17 | 珠海蓝图控制器科技有限公司 | 一种自行车换挡器 |
CN108227825B (zh) * | 2018-01-25 | 2023-09-22 | 柳工常州机械有限公司 | 操作手柄助停装置 |
DE102019100056A1 (de) * | 2019-01-03 | 2020-07-09 | Manuel-René Gernaert | Steuerungsvorrichtung zum Steuern von realen oder virtuellen Flugobjekten |
WO2020208601A1 (en) * | 2019-04-11 | 2020-10-15 | Walvoil S.P.A. | A modular control apparatus for actuating hydraulic valve systems |
EP3985180A1 (de) * | 2020-10-19 | 2022-04-20 | CNH Industrial Italia S.p.A. | Verbesserter multifunktions-joystick für ein arbeitsfahrzeug |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE792147A (fr) * | 1971-12-03 | 1973-03-16 | Mulag Fahrzeug Woessner | Engin faucheur aspirateur |
US4445541A (en) * | 1981-07-06 | 1984-05-01 | Dana Corporation | Hydraulic remote control joystick |
EP0089447A3 (de) * | 1982-03-22 | 1983-12-14 | Ditta HIDROBEN Spa | Hydraulische Vorsteuervorrichtung für Fernsteuerungen |
DE3310626C2 (de) | 1983-03-24 | 1985-02-14 | O & K Orenstein & Koppel Ag, 1000 Berlin | Steuervorrichtung |
US4755100A (en) * | 1985-11-12 | 1988-07-05 | Clark Equipment Company | Operator control system |
US5620053A (en) * | 1994-01-28 | 1997-04-15 | Komatsu, Ltd. | Blade apparatus and its control method in bulldozer |
EP0947906B1 (de) | 1994-11-08 | 2001-10-04 | Jungheinrich Aktiengesellschaft | Handbetätigte Stellvorrichtung für einen Bedienungsstand bzw. -sitz |
US5638866A (en) * | 1996-03-01 | 1997-06-17 | Dana Corporation | Detent arrangement for holding hydraulic valve members stroked |
DE29604210U1 (de) * | 1996-03-07 | 1996-07-04 | IWA Fluid Technik GmbH, 21217 Seevetal | Vorsteuerventil für hydraulische und/oder elektrische Steuerungen |
DE19630798A1 (de) * | 1996-06-22 | 1998-01-02 | Rexroth Mannesmann Gmbh | Vorsteuerung für zwei hydraulisch betätigbare Wegeventile |
FR2765001B1 (fr) * | 1997-06-20 | 1999-08-27 | Mannesmann Rexroth Sa | Dispositif de telecommande manuel, notamment distributeur de fluide |
-
1999
- 1999-10-15 DE DE1999149802 patent/DE19949802A1/de not_active Withdrawn
-
2000
- 2000-09-25 EP EP00979379A patent/EP1220992B1/de not_active Expired - Lifetime
- 2000-09-25 US US10/110,466 patent/US6932113B1/en not_active Expired - Fee Related
- 2000-09-25 WO PCT/DE2000/003323 patent/WO2001029428A2/de active IP Right Grant
- 2000-09-25 DE DE50005038T patent/DE50005038D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2001029428A2 (de) | 2001-04-26 |
WO2001029428A3 (de) | 2001-09-07 |
DE50005038D1 (de) | 2004-02-19 |
DE19949802A1 (de) | 2001-04-19 |
US6932113B1 (en) | 2005-08-23 |
EP1220992A2 (de) | 2002-07-10 |
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