EP0620084B1 - Dispositif de serrage pour la fixation de pièces de travail - Google Patents
Dispositif de serrage pour la fixation de pièces de travail Download PDFInfo
- Publication number
- EP0620084B1 EP0620084B1 EP94103740A EP94103740A EP0620084B1 EP 0620084 B1 EP0620084 B1 EP 0620084B1 EP 94103740 A EP94103740 A EP 94103740A EP 94103740 A EP94103740 A EP 94103740A EP 0620084 B1 EP0620084 B1 EP 0620084B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- clamping
- tapered
- clamping device
- wedge
- 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
-
- 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.
- a clamping force holding element with an actuating piston lying approximately perpendicular to the clamping piston is described in the literature GB-2,184,488 (see preamble of claim 1).
- the two pistons, which are approximately perpendicular to one another, have bevels on their piston rods which are arranged to slide on one another. In order to achieve good self-locking, the angle of these slopes is kept flat. This requires a long design for the actuating piston. Furthermore, the friction surface on the slopes is very small.
- 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.
- a tensioning device with the features of claim 1.
- a wedge is introduced into the wedge surfaces of the elements sliding on one another, to which both elements are adapted, so that a salvage 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 greater .
- 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 is dependent on the surface pressure and thus on the normal force F 2 and F 3 between the bevel 11 and the corresponding bevel of the keyway 10.
- 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, with the clamping head 2 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)
Claims (8)
- Dispositif de serrage pour la fixation des pièces à usiner sur une table de machine-outil ou sur des palettes, à un élément d'entretien de la capacité de serrage, à actionnement hydraulique ou pneumatique, dans lequel la capacité de serrage est engendrée via des élément d'entretien qui sont prévus des surfaces en biais qui glissent l'une sur l'autre, et dans lequel le piston de serrage (3) du dispositif de serrage et les pistons de réglage (6, 7) dudit élément d'entretien de la capacité de serrage sont disposés à un arrangement orthogonal environ l'un relativement à l'autre, caractérisé en ce que la tige de piston (8) dudit piston de réglage a une configuration cunéiforme le long d'une partie (15), et en ce qu'une rainure à clavette (10) est usinée dans ladite partie cunéiforme (15) de ladite tige de piston (8), et en ce que le poussoir (4) dudit piston de serrage (3) est muni des chanfreins en biais (11) des deux côtés dans la zone de sa surface biais (5) sur toute la longueur de ladite surface en biais (5), lesquels chanfreins en bas sont conformés, de façon appropriée, aux surfaces latérales de ladite rainure à clavette (10).
- Dispositif de serrage selon la revendication 1, caractérisé en ce que ladite tige de piston (8) est configurée sous forme d'un engrenage à clavettes sur ladite partie (15), et en ce que ledit poussoir (4) est également muni d'un engrenage à clavettes, et en ce que lesdits engrenages à clavettes sur ladite tige de piston et sur ledit poussoir glissent l'un dans l'autre à fermeture géométrique.
- Dispositif de serrage selon les revendications 1 et 2, caractérisé en ce qu'on peut établir l'effet d'arrêt automatique de ladite tige de piston (8) et dudit poussoir (4) par l'inclinaison desdites surfaces en biais (5 and 9) ensemble avec ledit chanfrein en biais (11).
- Dispositif de serrage selon la revendication 1, caractérisé en ce qu'un mandrin glissant cylindrique (19) est rigidement relié au carter (1), sur lequel mandrin est disposé un piston cunéiforme (16), qui est muni d'un alésage (17) de manière glissante, et en ce qu'à l'intérieur dudit mandrin glissant (19) une conduite de pression (24) est disposée qui s'ouvre dans une chambre sous pression (26) à l'extrémité dudit alésage (17).
- Dispositif de serrage selon les revendications 1 à 4, caractérisé en ce qu'on peut mettre la face (27) dudit piston cunéiforme (16) sous pression par ladite conduite de pression (23).
- Dispositif de serrage selon les revendications 1 à 4, caractérisé en ce que ledit piston cunéiforme (16) est muni d'une garniture de piston périphérique (21) dans la zone de la section transversale non réduite.
- Dispositif de serrage selon les revendications 1 à 4, caractérisé en ce que ledit alésage (17) est disposé de façon excentrique dans ledit piston cunéiforme (16).
- Dispositif de serrage selon les revendications 1 à 4 , caractérisé en ce que l'aire effective dudit poussoir (4) est faite aux dimensions essentiellement plus petites que les dimensions de l'aire annulaire formée par la tête à serrage (2) et ledit piston de serrage (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4311857 | 1993-04-10 | ||
DE4311857A DE4311857A1 (de) | 1993-04-10 | 1993-04-10 | Spannvorrichtung zum Spannen von Werkstücken |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0620084A1 EP0620084A1 (fr) | 1994-10-19 |
EP0620084B1 true 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) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6292495A (ja) * | 1985-09-13 | 1987-04-27 | アドバンスト インターコネクション テクノロジー インコーポレイテッド | 電子部品を相互接続するための基板の製造法およびそれによつて製造される物品 |
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 |
DE19918770A1 (de) * | 1999-04-24 | 2000-10-26 | Roemheld A Gmbh & Co Kg | Spannvorrichtung zum Spannen von Werkstücken |
DE10038760A1 (de) * | 2000-08-09 | 2002-02-21 | Roemheld A Gmbh & Co Kg | Stützelement |
DE10319815A1 (de) * | 2003-04-30 | 2004-11-18 | A. Römheld GmbH & Co KG | Spannelement zum Spannen von Werkstücken auf Maschinentischen, Vorrichtungen oder Paletten |
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 |
CN102865269B (zh) * | 2011-07-04 | 2015-03-25 | 鸿富锦精密工业(深圳)有限公司 | 气缸 |
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 |
DE112014006332A5 (de) * | 2014-02-04 | 2016-10-20 | Stäubli-Tec Systems GmbH | Hydraulisches Spannelement |
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 |
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 |
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 |
CN106181500B (zh) * | 2016-08-29 | 2018-03-30 | 福建兵工装备有限公司 | 气动夹具 |
CN113618573B (zh) * | 2021-08-18 | 2022-07-05 | 重庆臻宝实业有限公司 | 一种陶瓷棒自动打磨装置 |
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 |
Family Cites Families (15)
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 |
US4690033A (en) * | 1985-12-16 | 1987-09-01 | Winkle Denzal W Van | Self actuating locking and unlocking arrangement and method for reciprocating piston type actuators |
GB2185532A (en) * | 1986-01-21 | 1987-07-22 | Hydrajaws Limited | Locking fluid power operated devices |
CH663826A5 (de) * | 1987-02-26 | 1988-01-15 | Bieri Ag Liebefeld H | Druckfluid beaufschlagbare, verriegelbare spannzylinder-kolbeneinheit. |
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 |
JPH01154833A (ja) * | 1987-12-14 | 1989-06-16 | Aioi Seiki Kk | ロック機構付きクランプ装置 |
JP2913118B2 (ja) * | 1990-12-28 | 1999-06-28 | 株式会社コスメック | クランプロック装置付き流体圧クランプ |
-
1993
- 1993-04-10 DE DE4311857A patent/DE4311857A1/de not_active Withdrawn
-
1994
- 1994-03-11 DE DE59404187T patent/DE59404187D1/de not_active Expired - Lifetime
- 1994-03-11 EP EP94103740A patent/EP0620084B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE4311857A1 (de) | 1994-10-13 |
DE59404187D1 (de) | 1997-11-06 |
EP0620084A1 (fr) | 1994-10-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0620084B1 (fr) | Dispositif de serrage pour la fixation de pièces de travail | |
DE3723494C2 (de) | Spannvorrichtung | |
DE102008049753B4 (de) | Spannvorrichtung zum Spannen von Werkstücken | |
DE69703685T2 (de) | Verriegelungsvorrichtung für eine kolbenstange eines linearantriebes und damit ausgerüsteter linearantrieb | |
WO1995017292A1 (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 | |
EP2629936B1 (fr) | Système de serrage à point zéro | |
DE2911820A1 (de) | Schnittschlagdaempfungseinrichtung fuer stanzpressen, insbesondere hydraulische stanzpressen | |
DE3436075C1 (de) | Vorrichtung zur Ioesbaren Verbindung von Greiferschienenteilen der Greiferschienen in einer Transfer-Presse | |
DE2556227C3 (de) | Spannfutter | |
EP3569354B1 (fr) | Dispositif de fixation de pièces à usiner et installation d'usinage | |
DE3725714C1 (fr) | ||
DE2621727A1 (de) | Presse mit veraenderbarem abstand eines stoessels von einem tisch und entlastbarem druckkissen | |
EP0854771B1 (fr) | Machoire de serrage profilee pour dispositif de serrage | |
DE29824688U1 (de) | Radialpresse | |
DE19717467A1 (de) | Spannstock | |
EP1473110B1 (fr) | Dispositif de serrage de pièces sur des tables de machine-outil, sur des dispositifs ou sur des palettes | |
WO1999014014A1 (fr) | Dispositif d'entrainement pour plusieurs organes d'une machine | |
DE3803397C2 (fr) | ||
CH700207B1 (de) | Vorrichtung zum Fixieren von Werkzeugen in Werkzeugmaschinen. | |
CH663826A5 (de) | Druckfluid beaufschlagbare, verriegelbare spannzylinder-kolbeneinheit. | |
DE3233940C1 (de) | Schnellspannvorrichtung | |
DE3048229C2 (de) | Rückschlagventil für Grubenausbaustempel | |
DE3902918C1 (en) | Clamping device for tightly clamping tools |
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 |