Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
EP0579037B2 - Multiplicateur de pression hydropneumatique - Google Patents
[go: Go Back, main page]

EP0579037B2 - Multiplicateur de pression hydropneumatique - Google Patents

Multiplicateur de pression hydropneumatique Download PDF

Info

Publication number
EP0579037B2
EP0579037B2 EP93110428A EP93110428A EP0579037B2 EP 0579037 B2 EP0579037 B2 EP 0579037B2 EP 93110428 A EP93110428 A EP 93110428A EP 93110428 A EP93110428 A EP 93110428A EP 0579037 B2 EP0579037 B2 EP 0579037B2
Authority
EP
European Patent Office
Prior art keywords
piston
operating
pressure
chamber
storage
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
Application number
EP93110428A
Other languages
German (de)
English (en)
Other versions
EP0579037A1 (fr
EP0579037B1 (fr
Inventor
Viktor Dipl.-Ing. Malina
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.)
Tox Pressotechnik GmbH and Co KG
Original Assignee
Tox Pressotechnik GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6463352&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0579037(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tox Pressotechnik GmbH and Co KG filed Critical Tox Pressotechnik GmbH and Co KG
Publication of EP0579037A1 publication Critical patent/EP0579037A1/fr
Application granted granted Critical
Publication of EP0579037B1 publication Critical patent/EP0579037B1/fr
Publication of EP0579037B2 publication Critical patent/EP0579037B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/072—Combined pneumatic-hydraulic systems
    • F15B11/0725—Combined pneumatic-hydraulic systems with the driving energy being derived from a pneumatic system, a subsequent hydraulic system displacing or controlling the output element
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/032—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters
    • F15B11/0325—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters the fluid-pressure converter increasing the working force after an approach stroke
    • 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
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/216—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pneumatic-to-hydraulic converters

Definitions

  • the invention is based on a hydropneumatic Pressure translator according to the type of the main claim.
  • On Main problem with such hydropneumatic pressure intensifiers consists in the sealing between the storage room and the control room, because the hydraulic pressures in the storage space and the pneumatic ones Press continuously in the control room during a work cycle change, and not necessarily change synchronously, whereby on the one hand there is a risk that oil from the storage space in the Control room arrives and this causes leakage losses that the Working capacity of the hydropneumatic pressure intensifier can affect, or there is a risk that air from the Control room enters the storage room where it is absorbed by the oil with the disadvantage that it gets into the work area and there the high pressure phase of the pressure stroke to an intensified Compressibility tends with all of the resulting disadvantages for the working ability of the unit.
  • pressure translators (DE-OS 2810 894) are both to the wall of the working cylinder, as well as to the outer surface of the Plunger two radial seals provided with the purpose one to achieve optimal air-oil separation. Is problematic here in particular, that the inclination of the air from the control room in the Storage space does not come about in the low pressure phase is present, but rather in the high pressure phase, whereby also small amounts of air as wall laminates during the axial movement of the Storage piston are "pumped past" the radial seals.
  • the hydropneumatic pressure intensifier according to the invention with the characteristic features of the main claim points to compared to the advantage that in the ventilation ring grooves
  • the lowest pressure prevails, for example atmospheric pressure, so that the radial seal towards the control room passing air volumes can be derived.
  • A is used for ventilation Bore in the working cylinder, which is independent of the working stroke of the Accumulator piston with the lateral surface ring groove always in overlap stands. Both in the starting position and in the end position - possibly with only small remaining amounts in the storage space - is for a complete relief is provided, the vent hole can lead directly to the atmosphere.
  • a radial bore can in be carried out simply as a cross hole, beginning and end of this radial bore in each case in the annular groove lateral surfaces ends and therefore no frictional contact with the working cylinder or the plunger.
  • a Auxiliary piston connected to the working piston for rapid traverse alternately can be acted upon pneumatically on both sides.
  • Pressure intensifier is a working piston 2 axially in a housing 1 slidably and radially sealed and limited with it a hydraulic oil-filled working space 3.
  • a piston rod 4 projecting outside the housing arranged.
  • the working piston 2 has a collar Auxiliary piston 5, which is radially sealed to a casing tube 6 and thereby separates two pneumatic spaces 7 and 8 from each other for the rapid traverse of working piston 2 alternating with pneumatic Pressure are supplied.
  • a storage space 9 for hydraulic oil Above the work area 3 and hydraulically connected to it is a storage space 9 for hydraulic oil, the storage pressure by a storage piston and pneumatic pressure in one Control room 12 is generated.
  • the storage piston 11 is in one Storage space 9 and the control room 12, delimiting Jacket tube 13 guided radially sealing and axially displaceable, in Art a free piston.
  • the casing tube 13 is on the one hand by a Housing part 14 of the housing 1 and on the other hand by a Partition 15 closed, being on housing part 14 and partition 15 corresponding twists for pushing on the casing tube 13 are present, with additional static seals 16.
  • the partition 15 is used for the side facing away from the control chamber 12 Limitation of a pneumatic space 17, which is by a casing tube 18th is surrounded and in which the drive piston 19 of a plunger 21st is stored, which counter to the hydraulic pressure in the Work space 3 is movable.
  • the plunger 21 penetrates the partition 15 in a radially sealed manner and the storage piston 11 and dips with its free end in the Storage space 9.
  • the drive piston 19 with plunger 21 is driven by compressed air, which in a drive room 22 above of the drive piston 21 is passed, whereby the High pressure operation is initiated.
  • the plunger dives 21, after a certain stroke in one of Storage space 9 connecting bore 23 leading to work space 3, this connection with the participation of a radial seal 24 is interrupted.
  • This pressure corresponds to that Transmission ratio of the working surfaces of drive pistons 19 to Plunger piston 21, starting from the drive piston 19 pressurized pneumatic pressure.
  • the resulting high hydraulic pressure acts directly on the working piston 2 and causes the desired high force on the piston rod 4.
  • the various pneumatic rooms are through to the outside of the Hydropneumatic pressure intensifier leading connection channels equipped, namely the pneumatic room 7 through the channel 25, the Pneumatic room 8 through the channel 26, the control room 12 through the Channel 27, the pneumatic room 17 through the channel 28 and the Drive space 22 through the channel 29.
  • the working stroke is in the pneumatic control line 31 Pressure reduced and passed into a pneumatic control line 32, which connects the connecting channels 25, 27 and 29 to each other, wherein the connection channel 29 is a pressure-controlled valve 33 is connected upstream.
  • the supplied pneumatic pressure is the first the connecting channels 25 and 27 and thus the pneumatic space 7 and supplied to the control chamber 12, after which the auxiliary piston 5 with Piston 2 is pushed down in rapid and the Accumulator piston 11 corresponding to that from the storage space 9 in the Working space 3 overflowing hydraulic quantity is replenished.
  • the hydraulic volume in work space 3 and storage space 9 is overall constant, except for leakage amounts that occur every now and then need to be refilled.
  • Control line 32 and the pressure-controlled valve 33 gives the Inflow to the connecting duct 29 and thus to the drive chamber 22 free, so that the drive piston 19 with plunger 21 down is moved with the effect described above.
  • the accumulator piston 11 is between the one filled with oil Storage space 9 and, according to the control mentioned above, with air different pressure-filled control chamber 12, wherein especially to prevent oil from the storage space 9 in the control room 12 and vice versa air into the storage room 9 arrives.
  • an absolute air-oil separation is used for this on the storage piston 11, in which it is on the one hand both to the casing tube 13 as well as plunger 21 with annular grooves 34 and 35 Has radial seals 36 and 37.
  • the radial seals 37 for Plunger 21 is once as a round cord seal and once as Cuff seal shown shown shown.
  • annular groove 38 which is arranged in a Casing tube 13 arranged vent hole 39 to the outside the unit is vented.
  • the vent hole 39 is related on the annular groove 38, or the maximum possible stroke of the Storage piston 11 arranged so that they are always in overlap with the annular groove 38 remains.
  • annular groove 42 is provided by a continuous Radial bore 43 with the always vented annular groove 38 on the Shell surface of the storage piston 11 is connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Fluid-Damping Devices (AREA)

Claims (6)

  1. Multiplicateur de pression hydropneumatique
    avec un espace de travail (3) disposé dans un boítier d'agrégat pour des pressions variables, c'est-à-dire une pression de stockage faible et une pression de travail élevée,
    avec un piston de travail (2) délimitant l'espace de travail (3) côté avant et pouvant être actionné par la pression de travail dans le boítier d'agrégat (1) pour sa course de travail, qui est guidé par une tige de piston (4) vers l'extérieur,
    avec un espace de stockage (9) pouvant être relié de façon hydraulique à l'espace de travail (3) et disposé dans une gaine étanche (13), à partir duquel de l'huile hydraulique s'écoule sous la pression de stockage dans l'espace de travail (3) pendant un déplacement rapide de la course de travail et reflue lors de la course de retour,
    avec un piston plongeur (21) pouvant être actionné de façon pneumatique ou hydraulique comme générateur de haute pression et plonge dans l'espace de travail (3) après l'entrée du piston de travail (2),
    avec un piston de stockage (11) délimitant l'espace de stockage (9), pouvant être déplacé dans une gaine étanche et traversé par le piston plongeur (21),
    avec respectivement deux joints (36, 37) présents dans le sens de levage à distance sur le piston de stockage et agissant aussi bien pour le piston plongeur (21) que pour la gaine étanche (13), c'est-à-dire des joints radiaux (36) disposés dans deux rainures annulaires (34) sur la surface périphérique du piston de stockage (11) et agissant en direction de la gaine étanche (13) ou des joints radiaux (36) disposés dans deux rainures annulaires (35) dans la paroi de l'alésage interne (41) traversée par le piston plongeur (21) et agissant en direction du piston plongeur (21),
    avec un espace de commande (12) présent sur le côté, opposé à l'espace de stockage (9), du piston de stockage (11) et pouvant être sollicité avec de l'air de pression différente et
    avec une paroi de séparation (15) délimitant l'espace de commande (12), reliée de façon fixe à la gaine étanche (13) et traversée par le piston plongeur (21),
    avec une rainure annulaire extérieure (38) disposée sur la surface périphérique du piston de stockage (11) dans le sens de levage entre les joints (36) et ouverte en direction de la gaine de protection (13) et
    avec une rainure annulaire intérieure (42) disposée dans la paroi de l'alésage interne (41) du piston de stockage (11), également disposée entre les joints (37),
    caractérisé
    en ce qu'un alésage de ventilation (39) toujours en chevauchement avec la rainure annulaire extérieure (38) est disposé dans la gaine étanche (13) pour la décharge de pression de la bague annulaire extérieure (38) et
    en ce que l'alésage de ventilation (39) débouche dans l'atmosphère.
  2. Multiplicateur de pression hydropneumatique selon la revendication 1, caractérisé en ce que la rainure annulaire extérieure (38) est reliée à la rainure annulaire intérieure (42) par un alésage radial (43) dans le piston de stockage (11).
  3. Multiplicateur de pression hydropneumatique selon l'une quelconque des revendications 1 ou 2, caractérisé en ce qu'il est prévu des rainures annulaires d'étanchéité (34, 35) séparées sur les deux côtés de la rainure annulaire extérieure (38) et de la rainure annulaire intérieure (42) pour le logement de joints radiaux (36, 37).
  4. Multiplicateur de pression hydropneumatique selon l'une quelconque des revendications précédentes, caractérisé en ce que des canaux de raccordement (27, 28) débouchant de façon radiale vers l'extérieur pour l'air comprimé sont présents dans la paroi de séparation (15).
  5. Multiplicateur hydropneumatique de pression selon l'une quelconque des revendications précédentes, caractérisé en ce que l'espace (27) présent sur le côté, opposé à l'espace de commande (12), de la paroi de séparation (15) est commandé par pression d'air, pour le mouvement de retour d'un piston d'entraínement relié au piston plongeur (21).
  6. Multiplicateur hydropneumatique de pression selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un piston auxiliaire (5) est relié au piston de travail (2), qui peut être sollicité pour un déplacement rapide des deux côtés en alternance et de façon pneumatique.
EP93110428A 1992-07-02 1993-06-30 Multiplicateur de pression hydropneumatique Expired - Lifetime EP0579037B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4223411 1992-07-02
DE4223411A DE4223411A1 (de) 1992-07-02 1992-07-02 Hydropneumatischer Druckübersetzer

Publications (3)

Publication Number Publication Date
EP0579037A1 EP0579037A1 (fr) 1994-01-19
EP0579037B1 EP0579037B1 (fr) 1997-09-24
EP0579037B2 true EP0579037B2 (fr) 2003-01-22

Family

ID=6463352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93110428A Expired - Lifetime EP0579037B2 (fr) 1992-07-02 1993-06-30 Multiplicateur de pression hydropneumatique

Country Status (5)

Country Link
US (1) US5377488A (fr)
EP (1) EP0579037B2 (fr)
JP (1) JPH06159303A (fr)
AT (1) ATE158642T1 (fr)
DE (2) DE4223411A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010438B3 (de) * 2004-03-01 2005-06-30 Farger & Joosten Maschinenbau Gmbh Hydropneumatischer Druckübersetzer mit Axial- und Radialdichtungen

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2102762A1 (fr) * 1993-11-09 1995-05-10 Viljo K. Valavaara Rouleau presseur a deux etages
DE4445011A1 (de) * 1994-12-16 1996-06-20 Tox Pressotechnik Gmbh Hydraulischer Druckübersetzer
US5526644A (en) * 1995-06-07 1996-06-18 Brieschke; Todd M. Oil intensifier cylinder
US5943862A (en) * 1996-03-19 1999-08-31 Tox Pressotechnik Gmbh Hydropneumatic machine tool with cushioning
DE19720252A1 (de) * 1997-05-15 1998-11-19 Kraemer & Grebe Kg Hydropneumatischer Druckübersetzer als Stanzenantrieb in Verpackungsmaschinen
US5865029A (en) * 1997-07-11 1999-02-02 Aries Engineering Company, Inc. Air/oil intensifier having multiple sensors
DE19859891A1 (de) * 1998-12-23 2000-06-29 Tox Pressotechnik Gmbh Hydropneumatischer Druckübersetzer
KR100380121B1 (ko) * 2000-03-15 2003-04-14 주재석 유압식 증압실린더
EP1269026B1 (fr) 2000-03-27 2003-11-12 Tox Pressotechnik GmbH & Co. Kg Dispositif hydraulique demultiplicateur de pression
DE10255230A1 (de) * 2002-11-26 2004-06-09 Uhde High Pressure Technologies Gmbh Hochdruckvorrichtung und -verfahren zum hydraulisch-pneumatischen Krafthub für Reinraumanwendungen
MX2009000844A (es) * 2006-07-31 2009-02-04 Norgren Gmbh Accionador neumatico.
US8301307B2 (en) * 2007-04-13 2012-10-30 Norgren Gmbh Pneumatic actuator system and method
DE102007036844B4 (de) * 2007-08-06 2021-05-06 Tox Pressotechnik Gmbh & Co. Kg Verfahren zum Betrieb einer hydropneumatischen Vorrichtung zur Druckübersetzung
KR100917070B1 (ko) * 2007-09-03 2009-09-15 윤택수 부스터가 구비된 증압장치
DE102007044907A1 (de) * 2007-09-19 2009-04-02 Tox Pressotechnik Gmbh & Co. Kg Verfahren zum Betrieb einer hydropneumatischen Vorrichtung sowie Hydraulikflüssigkeitspumpe für die Wartung einer hydropneumatischen Vorrichtung
DE102012008902A1 (de) * 2012-05-08 2013-11-14 Tox Pressotechnik Gmbh & Co. Kg Hydropneumatische Vorrichtung zur Druckübersetzung und Nietvorrichtung
US9651067B2 (en) 2012-07-31 2017-05-16 Caterpillar Inc. Hydraulic system with a dynamic seal
US9394928B2 (en) 2012-07-31 2016-07-19 Caterpillar Inc. Dynamic seal wear mitigation system
CN102913509A (zh) * 2012-11-23 2013-02-06 湖北汽车工业学院 电液增压缸及安装有电液增压缸的压机设备
CN104279194A (zh) * 2013-07-09 2015-01-14 北京精密机电控制设备研究所 一种燃气挤压式油箱
CN107288942B (zh) * 2016-03-31 2019-01-08 中核新能核工业工程有限责任公司 以压缩空气为动力的小流量uf6气体增压装置
JP6999439B2 (ja) * 2017-03-15 2022-01-18 セイコーインスツル株式会社 シリンダ装置、プレス装置、ワーククランプ装置、シリンダ装置動作方法、ワークのクランプ方法、及びワークのプレス方法
US10941790B2 (en) * 2017-03-15 2021-03-09 Seiko Instruments Inc. Cylinder device, press machine, workpiece clamping apparatus, cylinder device actuating method, method for clamping workpiece, and method for pressing workpiece
US10982690B2 (en) * 2017-03-15 2021-04-20 Seiko Instruments Inc. Cylinder device, press machine, workpiece clamping apparatus, cylinder device actuating method, method for clamping workpiece, and method for pressing workpiece

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029138A1 (de) † 1989-09-18 1991-03-28 Savair Inc Oel-/luft-verstaerkerzylinder
US5107681A (en) † 1990-08-10 1992-04-28 Savair Inc. Oleopneumatic intensifier cylinder

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765625A (en) * 1952-06-12 1956-10-09 Charles H Hart Air-hydraulic booster
FR1504765A (fr) * 1966-10-26 1967-12-08 Faiveley Sa Vérin oléopneumatique à structure étagée
DE1777423C2 (de) * 1967-06-08 1975-12-04 Josef 6200 Wiesbaden-Bierstadt Nemetz Hydropneumatischer Spannzylinder
DE2230492A1 (de) * 1972-06-22 1974-01-10 Stommel & Voos Stahlstempelfab Pneumatisch-hydraulischer druckumsetzer
DE2304752A1 (de) * 1973-02-01 1974-08-15 Schaal Kg Werkzeug U Vorrichtu Vorrichtung zur pneumatisch - hydraulischen uebertragung von kraeften
CH616992A5 (en) * 1977-03-24 1980-04-30 Schenker Emil Storen Und Masch Pneumatic-hydraulic piston/cylinder unit, in particular for the actuation of tools
DE2818337C2 (de) * 1978-04-26 1980-07-17 Haug, Paul, 7307 Aichwald Druckübersetzter hydropneumatischer
DE3125081A1 (de) * 1981-06-26 1983-01-13 Kolben-Seeger GmbH & Co KG, 6236 Eschborn Hydropneumatischer druckzylinder
DE3828699A1 (de) * 1988-08-24 1990-03-01 Eugen Rapp Verfahren zur oelauffuellung eines hydro-pneumatischen druckuebersetzers und einrichtung zur durchfuehrung des verfahrens
US5265423A (en) * 1992-12-04 1993-11-30 Power Products Ltd. Air-oil pressure intensifier with isolation system for prohibiting leakage between and intermixing of the air and oil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029138A1 (de) † 1989-09-18 1991-03-28 Savair Inc Oel-/luft-verstaerkerzylinder
US5107681A (en) † 1990-08-10 1992-04-28 Savair Inc. Oleopneumatic intensifier cylinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010438B3 (de) * 2004-03-01 2005-06-30 Farger & Joosten Maschinenbau Gmbh Hydropneumatischer Druckübersetzer mit Axial- und Radialdichtungen

Also Published As

Publication number Publication date
ATE158642T1 (de) 1997-10-15
EP0579037A1 (fr) 1994-01-19
DE4223411A1 (de) 1994-01-05
DE59307411D1 (de) 1997-10-30
JPH06159303A (ja) 1994-06-07
US5377488A (en) 1995-01-03
EP0579037B1 (fr) 1997-09-24

Similar Documents

Publication Publication Date Title
EP0579037B2 (fr) Multiplicateur de pression hydropneumatique
DE2401341A1 (de) Verfahren und vorrichtung zum verstaerken von fluiddruck
DE102007036844A1 (de) Hydropneumatische Vorrichtung zur Druckübersetzung sowie Verfahren zum Betrieb einer hydropneumatischen Vorrichtung zur Druckübersetzung
WO1996018825A1 (fr) Dispositif multiplicateur de pression hydraulique
DE2020317A1 (de) Pumpvorrichtung
DE3241802A1 (de) Tandemhauptzylinder
EP2215368A2 (fr) Amplificateur électro-hydraulique
DE102007054533C5 (de) CNC-Stanzmaschine
DE4312589C2 (de) Hydraulisches System für eine Umformpresse
DE2648608A1 (de) Schaltvorrichtung fuer einen ein- oder mehrstufigen hydraulischen zylinder
DE3623736C2 (de) Hydraulische Bremsanlage für Kraftfahrzeuge
DE102007054774B3 (de) Elektrohydraulischer Verstärker
DE2220454C3 (de) Heißgaskolbenmaschine mit einem Kompressor
DE4435848A1 (de) Servomotor
DE4108207C2 (de) Mehrstufiger Fluid-Zylinder
DE3329832A1 (de) Einfachwirkender arbeitszylinder
DE3542926A1 (de) Pumpe
DE4345340C2 (de) Hydraulisches System für eine Umformpresse
DE8323775U1 (de) Einfachwirkender Arbeitszylinder
DE3438892C2 (fr)
DE10051042C2 (de) Antriebszylinder für Stanzen, Prägemaschinen, Pressen und dergleichen
DE102007030400A1 (de) Hydraulischer Druckübersetzer
DE2419220A1 (de) Schmiedepresse
DE3036530A1 (de) Zylinder-kolben-aggregat, insbesondere fuer stirling-maschinen
DE2848591A1 (de) Zylinderanordnung mit pneumohydraulischer druckuebersetzung und eilgang

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: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19940707

17Q First examination report despatched

Effective date: 19941214

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970924

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970924

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19970924

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970924

REF Corresponds to:

Ref document number: 158642

Country of ref document: AT

Date of ref document: 19971015

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59307411

Country of ref document: DE

Date of ref document: 19971030

ITF It: translation for a ep patent filed
ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19971224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Effective date: 19971226

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19971204

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: 76637

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980605

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980630

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980630

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980630

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980630

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref document number: 76637

Country of ref document: IE

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: FARGER & JOOSTEN GMBH

Effective date: 19980624

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

BERE Be: lapsed

Owner name: TOX-PRESSOTECHNIK G.M.B.H.

Effective date: 19980630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981231

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20030122

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030606

Year of fee payment: 11

ET3 Fr: translation filed ** decision concerning opposition
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040630

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090326

Year of fee payment: 17

Ref country code: FR

Payment date: 20090421

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120525

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Country of ref document: DE

Ref document number: 59307411

Representative=s name: ,

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59307411

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130702