EP0620084A1 - Dispositif de serrage pour la fixation de pièces de travail - Google Patents

Dispositif de serrage pour la fixation de pièces de travail Download PDF

Info

Publication number
EP0620084A1
EP0620084A1 EP94103740A EP94103740A EP0620084A1 EP 0620084 A1 EP0620084 A1 EP 0620084A1 EP 94103740 A EP94103740 A EP 94103740A EP 94103740 A EP94103740 A EP 94103740A EP 0620084 A1 EP0620084 A1 EP 0620084A1
Authority
EP
European Patent Office
Prior art keywords
clamping
wedge
piston
clamping device
holding element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94103740A
Other languages
German (de)
English (en)
Other versions
EP0620084B1 (fr
Inventor
David Fischer
Rudolf Kohlert
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0620084A1 publication Critical patent/EP0620084A1/fr
Application granted granted Critical
Publication of EP0620084B1 publication Critical patent/EP0620084B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/08—Arrangements for positively actuating jaws using cams
    • B25B5/087—Arrangements for positively actuating jaws using cams actuated by a hydraulic or pneumatic piston

Definitions

  • the invention relates to a hydraulically or pneumatically operated clamping force holding element for tendons or clamping devices for clamping workpieces on machine tables, devices or pallets.
  • the clamping device As long as the clamping force is maintained, the clamping device is adequately secured. However, if the clamping force fails, e.g. because the hydraulic flow or air pressure fails, the clamping force is usually no longer sufficient to secure the workpiece in such a way that it remains immovable in relation to the machining forces.
  • the clamping units which are used in particular on pallets and devices, must be kept as small as possible. They are required to hold each workpiece securely and to ensure the clamping pressure on the workpiece in the event of hydraulic or pneumatic failure.
  • the holding force is dependent on the frictional force of the two wedge surfaces lying on one another.
  • a flat angle requires a relatively large construction with a long stopping distance.
  • a steep angle allows short distances and thus a short design, but has the disadvantage of the lower holding force and the lower self-locking.
  • the invention is therefore based on the object of connecting a clamping device to a clamping force holding element in such a way that a small structural unit is retained
  • Clamping pressure on the other hand, is fully effective in every situation, regardless of the clamping device flow, which provides self-locking.
  • the holding element should only be subjected to pressure and not to train.
  • this is achieved by additionally inserting a wedge into the wedge surfaces of the elements sliding on one another, to which both elements are adapted, so that salvation enters a keyway, which increases the surface pressure and creates a frictional force between the wedge surfaces sliding on one another, which is many times larger.
  • the advantage of the invention is that the size of the support area on the tensioning piston is independent of the total stroke length of the tensioning piston.
  • the stroke of the actuating piston is also not influenced by different tensioning piston strokes.
  • the actuating piston is released by different piston diameters, so that the restoring force is many times greater than the actuating force.
  • the connection between the plunger and the piston rod creates an effective self-locking in all situations.
  • the tensioning device consists of a housing 1, which accommodates all elements and parts.
  • a clamping head 2 with its clamping piston 3 is mounted in the housing 1.
  • the clamping head carries the clamping elements of known type necessary for clamping workpieces.
  • a clamping force holding element 14 is connected to the housing 1 transversely to the direction of action of the clamping head 2.
  • the housing 1 and the housing of the clamping force element 14 can also be part.
  • a plunger 4 is arranged, which is firmly connected to the tensioning piston 3.
  • the lower end of this plunger 4 is provided with a wedge surface 5. Over the length of the wedge surface 5, the plunger 4 is provided with wedge bevels 11 on both sides towards the center line.
  • the clamping force holding element 14 consists of two actuating pistons 6 and 7 which are arranged inside the housing to the left and right of the effective range of the clamping head 2.
  • a piston rod 8 is provided between the actuating pistons 6 and 7.
  • subsection 15 i.e. Below the tappet 4, the piston rod 8 has a wedge surface 9 on its side facing the tappet 4. The inclination of the wedge surface 9 and the wedge surface 5 are adapted to one another.
  • the piston rod 8 also has a bore 12 which is so large that the plunger 4 passes through the bore 12. This bore 12 thus receives the plunger 4 in the relaxed state of the device.
  • a keyway 10 is therefore additionally introduced into the wedge surface 9 of the piston rod 8.
  • This keyway 10 runs the length of the key surface 9 and cuts a piece into the piston rod 8, as shown in FIG. 2.
  • the plunger 4 is provided with wedge bevels 11 on both sides in its lower part parallel to the key surface 5. These wedge bevels 11 are in turn adapted exactly to the bevels of the keyway 10, so that the surfaces slide on one another. This also creates a friction surface that significantly increases the friction force.
  • the frictional force depends on the surface pressure and thus on the normal force F2 and F3 between the bevels 11 and the corresponding bevels of the keyway 10th
  • the inclination of the surfaces to one another has an influence on the construction of the device.
  • the double wedge system ensures a short stroke of the actuating piston with a large support area on the tensioning piston.
  • E.g. an inclination of 20 ° for the wedge surfaces 5 and 9 and a wedge angle of 30 ° for the wedge bevels 11 in the keyway 10 so with a stroke of 15mm on the actuating piston, a support area of 5.4mm on the tensioning piston is achieved, i.e. almost a third.
  • the flow of force in the direction of clamping can be further increased in the clamping force holding element 14 in that a spring 13 also acts in the clamping direction. This means that the restoring force must also overcome the spring force. This spring also offers additional security against vibrations if vibrations occur.
  • Actuating piston 6 is adapted in its effective cross section to the flow of force that is necessary to allow the piston rod 8 to slide safely under the tappet 4.
  • Actuating piston 7, on the other hand, is approximately three times larger in its effective cross section for the introduction of force, which also means that the restoring force is three times larger.
  • the effective surface for the frictional forces consists of a wedge surface with an inserted keyway and a corresponding counter surface.
  • a spline can also be used be provided between the piston rod and the plunger, so that the formation of a plurality of interlocking teeth results in an increase in area, which leads to less wear during the service life, The linear expansion of the clamping force holding element can be further reduced.
  • the clamping force holding element 14 is designed differently. the piston rod 8 and its actuating piston 6 become part of the housing 1. This goes from Fig. 6 u. 7 out. Fig. 6 shows the shortened embodiment in the relaxed state and Fig. 7 in the tensioned state.
  • the clamping force holding element 14 consists of a cylindrical sliding mandrel 19 which is fixedly connected to the housing and on which the wedge piston 16 can be slid.
  • a cylinder bore 17 is provided in the wedge piston 16. The length of this cylinder bore is approximately 95% of the total length of the wedge piston.
  • This cylinder bore can be arranged both centrally and off-center, that is to say eccentrically.
  • the eccentric arrangement has the advantage that a larger wall thickness from the wedge slope to the cylinder bore is retained when the pressure is exerted on the wedge slope 18.
  • the wedge piston is then additionally protected against rotation.
  • the clamping force holding element 14 is further shortened further by eliminating the actuating piston 7 and the bore 12 and for this purpose the wedge piston 16 is intended for pressurizing directly on its end face 27.
  • the wedge piston is in direct contact with the pressure medium and that when the pressure is released, all wedge surfaces are under the pressure of the medium.
  • the wedge piston 16 in order to prevent an additional, one-sided pressing in the cylinder bore 17 by the pressure medium, must be equipped with pressure relief grooves, not shown, on its circumference.
  • the effective cross-sectional area of the plunger 4 is significantly smaller than the ring cross-sectional area caused by Clamping head 2 and clamping piston 3 are formed, since the pressure from the tappet cross section and from the ring cross section of the clamping head 2 and clamping piston 3 are opposed to one another during relaxation.
  • 6 shows the state of the relaxed element. If the pressure line 24 is pressurized, a pressure is built up in the chamber 26, which acts on the end face 28 in the cylinder bore 17 of the wedge piston 16 and drives it to the right from the position shown in FIG. 6, the clamping head 2 simultaneously is moved upwards. As soon as the clamping process is completed, the plunger 4 is fixed by the wedge piston 16, as shown in FIG. 7.
  • the pressure line 23 is pressurized and a pressure is built up in the pressure chamber 25, which acts on the end face 27 of the wedge piston 16 and moves it back, a pressure reduction in the pressure chamber 26 simultaneously taking place via valves.
  • the tappet 4 slides down again and the unit is in the relaxed state.
  • Fig. 8 shows the wedge piston in its shortened version. The difference to Fig. 3 is significant.
  • FIG. 9 shows another example in which the surfaces sliding on one another are splined between the wedge piston 16 and the plunger 4.
  • the surfaces of the wedge piston 16 and the plunger 4 lie in a pressure chamber, which means that oil can be used as the pressure medium.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Clamps And Clips (AREA)
EP94103740A 1993-04-10 1994-03-11 Dispositif de serrage pour la fixation de pièces de travail Expired - Lifetime EP0620084B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4311857A DE4311857A1 (de) 1993-04-10 1993-04-10 Spannvorrichtung zum Spannen von Werkstücken
DE4311857 1993-04-10

Publications (2)

Publication Number Publication Date
EP0620084A1 true EP0620084A1 (fr) 1994-10-19
EP0620084B1 EP0620084B1 (fr) 1997-10-01

Family

ID=6485244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103740A Expired - Lifetime EP0620084B1 (fr) 1993-04-10 1994-03-11 Dispositif de serrage pour la fixation de pièces de travail

Country Status (2)

Country Link
EP (1) EP0620084B1 (fr)
DE (2) DE4311857A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU596116B2 (en) * 1985-09-13 1990-04-26 Advanced Interconnection Technology, Inc. Process for the manufacture of substrates to interconnect electronic components and articles made by said process
EP1046468A2 (fr) * 1999-04-24 2000-10-25 A. Römheld GmbH & Co KG Dispositif de serrage pour la fixation de pièces de travail
EP1180603A2 (fr) * 2000-08-09 2002-02-20 A. Römheld GmbH & Co KG Elément support
EP1473110A1 (fr) * 2003-04-30 2004-11-03 Ludwig Ehrhardt GmbH Dispositif de serrage de pièces sur des tables de machine-outil, sur des dispositifs ou sur des palettes
CN102865269A (zh) * 2011-07-04 2013-01-09 鸿富锦精密工业（深圳）有限公司 气缸
CN105108541A (zh) * 2015-09-24 2015-12-02 重庆民发汽车配件有限责任公司 一种汽车排气歧管进气接头安装孔钻孔工装
CN106181500A (zh) * 2016-08-29 2016-12-07 福建兵工装备有限公司 气动夹具
AT520914A5 (de) * 2014-02-04 2019-08-15 Staeubli Tec Systems Gmbh Hydraulisches Spannelement
CN113618573A (zh) * 2021-08-18 2021-11-09 重庆臻宝实业有限公司 一种陶瓷棒自动打磨装置

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531890A1 (de) * 1995-08-30 1997-03-06 David Fischer Flachspannelement
DE19542425C1 (de) * 1995-11-14 1996-12-19 Lucas Ind Plc Verfahren zum Vorbereiten eines Werkstücks, insbesondere Bremssattels, zur Weiterbearbeitung, sowie Spannvorrichtung zum Durchführen des Verfahrens
DE202004004204U1 (de) * 2004-03-12 2005-07-21 Schunk Gmbh & Co. Kg Fabrik Für Spann- Und Greifwerkzeuge Blechspanneinrichtung
DE102004060270B4 (de) * 2004-12-15 2014-12-11 Bayerische Motoren Werke Aktiengesellschaft Transportmodul mit Verschieberiegel
WO2008120284A1 (fr) * 2007-02-27 2008-10-09 Oks Co., Ltd. Collier de serrage
ATE537936T1 (de) * 2009-02-20 2012-01-15 Hofstetter Vorrichtungs & Maschb Gmbh Spannvorrichtung sowie verfahren zum betreiben der spannvorrichtung
CN102501099A (zh) * 2011-11-29 2012-06-20 无锡威孚精密机械制造有限责任公司 液压阀阀体加工夹具的滑块压紧部件
CN103394944A (zh) * 2013-07-30 2013-11-20 江苏新贝斯特中传科技有限公司 一种自锁油缸
CN104907861A (zh) * 2014-03-11 2015-09-16 苏州春兴精工股份有限公司 一种气动夹具锁紧装置
CN103866745B (zh) * 2014-03-28 2016-03-16 常州东方机电成套有限公司 一种用于大型水闸门的自锁式楔形顶紧装置
CN105171482A (zh) * 2015-09-25 2015-12-23 中国南方航空工业(集团)有限公司 叶片加工用压紧装置
DE202016000391U1 (de) 2016-01-21 2016-02-29 Christof Steubing Abstützvorrichtung
CN105563188A (zh) * 2016-02-29 2016-05-11 无锡烨隆精密机械有限公司 一种用于机加工的锲型高强度支撑结构
CN105666379A (zh) * 2016-03-31 2016-06-15 苏州元泰自动化科技有限公司 浮动支撑锁紧装置
DE202016002983U1 (de) 2016-05-06 2016-06-15 Christof Steubing Abstützvorrichtung
WO2024110883A1 (fr) * 2022-11-24 2024-05-30 Hydroblock S.R.L. Dispositif de serrage de pièces sur des machines-outils
CN116061022B (zh) * 2023-02-16 2023-09-15 青岛北海车轮有限公司 一种轮辋轮缘自动修磨设备与方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184488A (en) * 1985-12-16 1987-06-24 Denzal Wayne Van Winkle Locking an hydraulic actuator
GB2185532A (en) * 1986-01-21 1987-07-22 Hydrajaws Limited Locking fluid power operated devices
WO1988006684A1 (fr) * 1987-02-26 1988-09-07 H. Bieri Ag Maschinenfabrik Ensemble piston verrouillable a verin de serrage
JPH01154833A (ja) * 1987-12-14 1989-06-16 Aioi Seiki Kk ロック機構付きクランプ装置
EP0493230A1 (fr) * 1990-12-28 1992-07-01 Kabushiki Kaisha Kosmek Dispositif de serrage

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1552707A1 (de) * 1966-03-02 1970-07-02 Volk Geb Knaebler Spannelement,bei welchem die Spannkraft durch ein Druckmittel erzeugt wird
DE1552711C3 (de) * 1966-04-26 1973-09-20 Volk Geb. Knaebler, Erika, 7982 Baienfurt Durch Druckmittel betätigtes Spannelement
SU552169A1 (ru) * 1975-09-30 1977-03-30 Минское Специальное Конструкторское Бюро Автоматизированных Линий Устройство дл фиксации и зажима деталей
US4201284A (en) * 1978-11-02 1980-05-06 Brems John Henry Pallet registry system
SU814647A1 (ru) * 1979-06-15 1981-03-23 Барановичское Специальное Конструк-Topckoe Бюро Автоматических Линий Подводима опора
SU1122467A1 (ru) * 1983-04-08 1984-11-07 Ростовский-На-Дону Проектно-Конструкторский Технологический Институт Самоустанавливающа с опора
DE3332670A1 (de) * 1983-09-10 1985-03-28 Cross Europa-Werk Gmbh, 7317 Wendlingen Transfermaschine
DE3531766C1 (de) * 1985-09-06 1989-07-20 Honsberg Gmbh Geb Spannvorrichtung fuer Werkstuecke
DE3732206A1 (de) * 1987-09-24 1989-04-13 Buechler B Set Ag Verfahren zum herstellen eines bezueglich eines zweiten gegenstandes hochgenau festlegbaren ersten gegenstandes
DE3838995A1 (de) * 1987-11-24 1989-06-08 Bernd Dipl Ing Hoerner Hydraulisches zugspannelement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184488A (en) * 1985-12-16 1987-06-24 Denzal Wayne Van Winkle Locking an hydraulic actuator
GB2185532A (en) * 1986-01-21 1987-07-22 Hydrajaws Limited Locking fluid power operated devices
WO1988006684A1 (fr) * 1987-02-26 1988-09-07 H. Bieri Ag Maschinenfabrik Ensemble piston verrouillable a verin de serrage
JPH01154833A (ja) * 1987-12-14 1989-06-16 Aioi Seiki Kk ロック機構付きクランプ装置
EP0493230A1 (fr) * 1990-12-28 1992-07-01 Kabushiki Kaisha Kosmek Dispositif de serrage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 418 (M - 871) 18 September 1989 (1989-09-18) *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU596116B2 (en) * 1985-09-13 1990-04-26 Advanced Interconnection Technology, Inc. Process for the manufacture of substrates to interconnect electronic components and articles made by said process
EP1046468A2 (fr) * 1999-04-24 2000-10-25 A. Römheld GmbH & Co KG Dispositif de serrage pour la fixation de pièces de travail
DE19918770A1 (de) * 1999-04-24 2000-10-26 Roemheld A Gmbh & Co Kg Spannvorrichtung zum Spannen von Werkstücken
EP1046468A3 (fr) * 1999-04-24 2001-02-14 A. Römheld GmbH & Co KG Dispositif de serrage pour la fixation de pièces de travail
US6308943B1 (en) 1999-04-24 2001-10-30 A. Roemheld Gmbh & Co Kg Device for clamping workpiece to a surface
EP1180603A3 (fr) * 2000-08-09 2003-11-05 A. Römheld GmbH & Co KG Elément support
EP1180603A2 (fr) * 2000-08-09 2002-02-20 A. Römheld GmbH & Co KG Elément support
EP1473110A1 (fr) * 2003-04-30 2004-11-03 Ludwig Ehrhardt GmbH Dispositif de serrage de pièces sur des tables de machine-outil, sur des dispositifs ou sur des palettes
CN102865269A (zh) * 2011-07-04 2013-01-09 鸿富锦精密工业（深圳）有限公司 气缸
CN102865269B (zh) * 2011-07-04 2015-03-25 鸿富锦精密工业（深圳）有限公司 气缸
AT520914A5 (de) * 2014-02-04 2019-08-15 Staeubli Tec Systems Gmbh Hydraulisches Spannelement
CN105108541A (zh) * 2015-09-24 2015-12-02 重庆民发汽车配件有限责任公司 一种汽车排气歧管进气接头安装孔钻孔工装
CN106181500A (zh) * 2016-08-29 2016-12-07 福建兵工装备有限公司 气动夹具
CN113618573A (zh) * 2021-08-18 2021-11-09 重庆臻宝实业有限公司 一种陶瓷棒自动打磨装置

Also Published As

Publication number Publication date
DE4311857A1 (de) 1994-10-13
EP0620084B1 (fr) 1997-10-01
DE59404187D1 (de) 1997-11-06

Similar Documents

Publication Publication Date Title
EP0620084B1 (fr) Dispositif de serrage pour la fixation de pièces de travail
DE102008049753B4 (de) Spannvorrichtung zum Spannen von Werkstücken
DE69703685T2 (de) Verriegelungsvorrichtung für eine kolbenstange eines linearantriebes und damit ausgerüsteter linearantrieb
EP0735944A1 (fr) Dispositif de fermeture d'un moule pour machine a mouler par injection
DE1602547B2 (de) Einrichtung zur intermittierenden zufuhr von bandfoermigem material zu stanzpressen o.dgl.
EP0276355B1 (fr) Filtre-presse avec un nombre de plaques de filtration à membrane
EP1046468B1 (fr) Dispositif de serrage pour la fixation de pièces de travail
EP2629936B1 (fr) Système de serrage à point zéro
DE2556227C3 (de) Spannfutter
DE3436075C1 (de) Vorrichtung zur Ioesbaren Verbindung von Greiferschienenteilen der Greiferschienen in einer Transfer-Presse
EP3569354A1 (fr) Dispositif de fixation de pièces à usiner et installation d'usinage
WO2002062557A1 (fr) Dispositif d'entrainement lineaire pour l'ouverture et la fermeture d'outils de moulage et pour l'application d'une force de fermeture sur ces outils
DE29824688U1 (de) Radialpresse
WO1999014014A1 (fr) Dispositif d'entrainement pour plusieurs organes d'une machine
CH700207B1 (de) Vorrichtung zum Fixieren von Werkzeugen in Werkzeugmaschinen.
DE3233940C1 (de) Schnellspannvorrichtung
CH663826A5 (de) Druckfluid beaufschlagbare, verriegelbare spannzylinder-kolbeneinheit.
EP0574682B1 (fr) Accouplement à friction d'un arbre avec un élément de machine
DE4308738A1 (de) Spann- und Löseeinrichtung für Schaftwerkzeuge
DE3048229C2 (de) Rückschlagventil für Grubenausbaustempel
EP0642860A1 (fr) Dispositif pour l'actionnement d'une tête de serrage
DE3803397C2 (fr)
DE3734987C1 (de) Schneidrotor mit auswechselbaren Messerleisten zum Zerkleinern von festen Materialien
DE3817109A1 (de) Kupplungsvorrichtung
DE2323132C2 (de) Steuerbare Stillstandsdichtung

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): CH DE FR GB LI

17P Request for examination filed

Effective date: 19950217

17Q First examination report despatched

Effective date: 19960403

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): CH DE FR GB LI

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59404187

Country of ref document: DE

Date of ref document: 19971106

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

Effective date: 19971121

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

Ref country code: LI

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

Effective date: 19980331

Ref country code: CH

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

Effective date: 19980331

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
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

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

Ref country code: GB

Payment date: 20080318

Year of fee payment: 15

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

Effective date: 20090311

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: 20090311

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

Ref country code: DE

Payment date: 20130331

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20130425

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59404187

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59404187

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: 20140312