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EP0164581A1 - Dispositif d'entraînement de porte d'ascenseur comportant un dispositif de verrouillage - Google Patents

Dispositif d'entraînement de porte d'ascenseur comportant un dispositif de verrouillage Download PDF

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Publication number
EP0164581A1
EP0164581A1 EP85105733A EP85105733A EP0164581A1 EP 0164581 A1 EP0164581 A1 EP 0164581A1 EP 85105733 A EP85105733 A EP 85105733A EP 85105733 A EP85105733 A EP 85105733A EP 0164581 A1 EP0164581 A1 EP 0164581A1
Authority
EP
European Patent Office
Prior art keywords
door
pawl
cabin
drive device
drive
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
EP85105733A
Other languages
German (de)
English (en)
Other versions
EP0164581B1 (fr
Inventor
Max Haas
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.)
Inventio AG
Original Assignee
Inventio AG
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 Inventio AG filed Critical Inventio AG
Priority to AT85105733T priority Critical patent/ATE28847T1/de
Publication of EP0164581A1 publication Critical patent/EP0164581A1/fr
Application granted granted Critical
Publication of EP0164581B1 publication Critical patent/EP0164581B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/12—Arrangements for effecting simultaneous opening or closing of cage and landing doors

Definitions

  • the present invention relates to a door drive device with a locking mechanism for lifts, in which in the area of the floors a car door which can be positively connected to a shaft door by a coupling mechanism can be moved by a drive, the coupling mechanism comprising a driver parallelogram mounted on the car door and two each fastened to each shaft door There is a pin, the drive is in a dead center position when the cabin door is closed and the drive means of the door drive device is driven by a motor arranged on the cabin via a reduction gear.
  • such a door drive device in which for the coupling of the cabin door with a shaft door a driver parallelogram arranged on the cabin door cooperates with two roller journals attached to the shaft door.
  • an electric motor holds an actuating device in a dead center position in which the cabin door is kept closed and cannot be opened by passengers.
  • the entraining takes on an a compressed position to urchfahrt in the D drive through a floor with play between the roller pin the shaft door to.
  • the driver parallelogram is pushed apart by the actuating device against the force of a spring until it rests on the roller pin.
  • the cabin door and the landing door are opened together by the further movement of the actuating device.
  • the actuating device is automatically guided out of the dead center position by the force of the spring arranged on the driver parallelogram and, on the other hand, a locking lever arranged on the driver parallelogram and moved with the parallelogram cooperates with a stop attached to the elevator car.
  • the cabin and landing doors can be opened by hand be, while outside this area, with the maximum spread parallel parallelogram the locking lever is against the stop and the cabin door can not be opened.
  • a disadvantage of the locking mechanism of this door drive device is that under certain circumstances it would be theoretically possible to open the cabin door if it had to remain closed. If, for example, there is an elevator car outside the floor area in the event of a power failure, the car door can be opened for a short period of time after the actuating device has been moved out of the dead center position by the spring acting on the driver parallelogram and before the driver parallelogram is moved by the same spring into the maximally spread-out end position is pulled, at which the locking lever is against the stop.
  • the driver parallelogram consists of two parallel coupling rails and two articulated double levers mounted on the cabin door.
  • the coupling rails are spread out by a spring engaging them and pressed together by means of a lever of the push crank drive presses.
  • the driver parallelogram works together with two pins arranged on the shaft door, one being fixed and the other being mounted on a pivotable angle lever and being movable to a limited extent.
  • the compressed coupling rails move between the two pins.
  • the door operating device put into operation releases the driver parallelogram.
  • the spread driver parallelogram unlocks the shaft door lock in a first phase, against the force of another spring, in order to positively engage the two pins in a second phase.
  • the cabin and shaft doors are opened together by the door operating device. From the patent description it is not clear whether the cabin door is locked in the closed position in the event of a power failure by means of a separate locking device by a dead center position of the drive linkage or not at all. If the lever arrangement with the cabin door closed is not in a dead center position in the event of a power failure and there is also no separate locking mechanism or a locking mechanism that unlocks in the event of a power failure, the cabin door can be moved in the area and also outside the area of the shaft door.
  • the lever arrangement is in a dead center position when the car door is closed and there is a power failure, or the car door has a separate lock, which is in the event of a power failure not unlocked, the cabin door cannot be moved from the cabin in the event of a power failure.
  • the invention is based on the object of proposing a door drive device with a locking mechanism which allows the cabin and shaft door to be opened jointly when the cabin is in the area of a floor access and clearly prevents passengers from opening the cabin door when the cabin is outside Floor.
  • 31 denotes an elevator car, the entrance 32 of which is closed by a one-piece car door 33.
  • an electric motor 34 and a belt transmission 35 are mounted on the elevator car 31 on a support plate (not shown).
  • the electric motor 34 and the belt transmission 35 are connected to one another with a drive belt 36.
  • a drive roller 37 of the belt transmission 35 drives a drive belt 38 which is guided over two deflection wheels 45 and is connected to the cabin door 33 via a driving bracket 39 and a pivot point 40.
  • two tensioning rollers 42 and 43 which are pivotally mounted about the axis of the belt transmission 35 and are connected to one another by a tension spring 41 are used.
  • a driver parallelogram 11 is pivotably mounted on the cabin door 33 with two pivot points 4 in a certain range.
  • a support 19 is arranged on the driver parallelogram 11.
  • an angle lever 5 is articulated, which has a control roller 9 and is connected to a pawl 7 via a bracket 20.
  • the pawl 7 is rotatably supported at a pivot point 8 on a bracket 28 attached to the cabin door 33.
  • the pawl 7 is in contact with a stop 23 arranged on the cabin 31.
  • a shaft door 44 is arranged opposite the car door 33. On the shaft door 44 there are two driver pins 12 which cooperate with the driver parallelogram 11 of the cabin door 33 and a fixed cam 10 for actuating the control roller 9 attached.
  • the cabin door 33 is suspended from rollers 46 which run on a rail 47.
  • a control roller 48 actuated by the movement of the driver parallelogram works together with a double lever 49 in order to guide the driver bracket 39 of the door drive from the dead center position when the cabin is at a standstill.
  • Fig. 3 1 denotes a schematically shown maximally compressed position of the driver parallelogram 11, in which the pawl 7 remains in a horizontal, locked position.
  • 2 is a position when coupling the driver parallelogram 11 with the coupling parts of the shaft door 44, namely before the control roller 9 runs onto the control cam 10 arranged on the shaft door, with 2 'a release position after the control roller 9 runs onto the control curve 10 and 3 shows a maximum spread apart position of the driver parallelogram 11, for example in the event of a power failure, when the elevator car is located outside the floor area.
  • FIGS. 4 and 5 denotes the points of rotation of the double levers 15, which are fixed to the cabin door, for driving parallelogram 11.
  • the connection points between the coupling rails 13 and 14 and the double levers 15 are given the numbers 17 and 18.
  • the control roller 48 is mounted on the upper double lever 15. One end of a tension spring 16 hinged to the cabin door at the other end is fastened to the driver parallelogram 11. On one coupling rail 13, the support 19 is fastened with the fulcrum 6 for the angle lever 5.
  • the control roller 9 is rotatably mounted on the angle lever 5 at one end and the tab 20 is connected to a hinge point 21 at the other end.
  • the tab 20 is connected to the pawl 7 with a second hinge point 22, which in turn is rotatably fastened to the bracket 28 arranged on the cabin door at the pivot point 8.
  • a damping stop 25 for the pawl 7 is also fastened to the console 28.
  • Another damping stop 26 is provided on the pawl 7.
  • a stop 23 for holding the pawl 7 and a monitoring contact 27 are provided, which is opened or closed by a bridge 29 fastened to the pawl 7.
  • 5 is the control roller 9th on one of the control cam 10 arranged on the shaft doors.
  • FIG. 6, 4 again denotes the pivot points of the double levers 15, which are fixed to the cabin door, for the driver parallelogram 11.
  • the driver parallelogram 11 consists of the two coupling rails 13, 14, the two double levers 15 and the tension spring 16.
  • the connection points of the double levers 15 with the coupling rails 13 and 14 are designated 17 and 18.
  • the control roller 48 is mounted on the upper double lever 15.
  • the support 19, which carries the angle lever 5, is fastened to the coupling rail 13.
  • the control roller 9 is arranged on the angle lever 5 and the tab 20 is arranged with the articulation point 21.
  • the tab 20 is connected to the pawl 7 at the second hinge point 22.
  • the pawl 7 is rotatably attached to the bracket 28 arranged on the cabin door with the fulcrum 8.
  • the console 28 also carries a damping stop 25. Another damping stop 26 is provided on the pawl 7. On a further console 24 arranged on the cabin, a stop 23 for holding the pawl 7 and a monitoring contact 23 are provided, which is opened or closed by a bridge 29 attached to the pawl 7.
  • FIG. 3 are the three possible fixed positions of the driver parallelogram 11 and the associated Latching device shown schematically.
  • the position shown in FIG. 1 is taken up by the device while the elevator car is moving, in which the parallelogram 11 of the driver is held in a compressed position by the door drive device turned into a dead center position.
  • This position also corresponds to the device shown in FIG. 4.
  • the cabin door In this position, the cabin door also remains closed and locked and cannot be opened by passengers.
  • the compressed parallelogram 11 travels through without contact between the pins 12 of the landing door.
  • FIG. 2 corresponds to the release arrangement also shown in FIG. 5 when the elevator car is located in the area of a floor.
  • the door drive device is driven approx. 25 cm before the flush position of the car floor and floor and is brought out of the dead center position.
  • the driver parallelogram 11 engages between the two pins 12 attached to the shaft door.
  • the control roller 9 runs on the fixed control cam 10 also arranged on the shaft door and the angle lever 5 lifts the pawl 7 on one side by its rotary movement and on the other side tilts it from the locked holding position into the release position.
  • the monitoring contact 27 is opened.
  • the Kabi The door can open when the door drive device continues to move and also takes the shaft door with it due to the parallelogram 11 which grips between the pins 12.
  • the same position 2 is assumed if the elevator car is in the area of one floor in the event of a power failure.
  • the door drive device is guided by the tension spring 16 of the driver parallelogram 11 from position 1 to position 2, the control roller 9 coming to rest on the control cam 10 during this movement sequence and the pawl also being guided out of the lock by the further movement of the driver parallelogram.
  • the control roller 48 of the driver parallelogram 11 presses the double lever 49 up on one side, as a result of which the other side is pressed down together with the driver bracket 39 and the door drive is guided out of the dead center position. It is now possible for the passenger to open the coupled cabin and shaft doors by hand.
  • the position shown in FIG. 3 corresponds to the position of the driver parallelogram 11 that is spread apart to the maximum and is also shown in FIG.
  • the door drive device is in turn guided by the tension spring 16 of the driver parallelogram 11 from position 1 to position 3. Since the control roller 9 outside the floor area can not run onto the control curve 10, the pawl 7 remains locked and the monitoring contact 27 closed; the cabin door cannot be opened.
  • a locked position of the pawl 7 is assigned to all positions of the driver parallelogram 11 when the control roller 9 does not run onto the control cam 10. Only in the area of the floors, where the control cam 10 arranged on the shaft doors unlocks the pawl 7 via the control roller 9 and opens the monitoring contact 27, is it possible to open the cabin door together with the associated shaft door, be it automatically by the door drive device in Normally or by the passengers by hand in the event of a breakdown caused by a power failure.
  • the angle lever 5 and the tab 20 have the task of keeping the pawl 7 locked outside the areas of the control cams 10 at each spread position of the driver parallelogram 11.
  • the control roller 9, which is rotatably mounted on the angle lever 5, must never assume a position which would allow the control curve 10 to undermine and must not touch the control curve 10 when passing through the floors.
  • a pivotable stop can be mounted, which is held by the lever linkage 5, 20 in a movement path which is within the effective range of a counter-stop attached to the elevator car and which is pivoted away from this lever path when the control roller 9 runs onto the control cam 10 from the lever linkage .
  • a two-part telescopic door or a two-part centrally opening sliding door can, for example, also be equipped with the door drive device shown.

Landscapes

  • Elevator Door Apparatuses (AREA)
  • Lock And Its Accessories (AREA)
  • Special Wing (AREA)
EP85105733A 1984-05-28 1985-05-10 Dispositif d'entraînement de porte d'ascenseur comportant un dispositif de verrouillage Expired EP0164581B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85105733T ATE28847T1 (de) 1984-05-28 1985-05-10 Tuerantriebsvorrichtung mit verriegelungsmechanismus fuer aufzuege.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2595/84A CH663406A5 (de) 1984-05-28 1984-05-28 Tuerantriebsvorrichtung mit verriegelungsmechanismus fuer aufzuege.
CH2595/84 1984-05-28

Publications (2)

Publication Number Publication Date
EP0164581A1 true EP0164581A1 (fr) 1985-12-18
EP0164581B1 EP0164581B1 (fr) 1987-08-12

Family

ID=4237303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105733A Expired EP0164581B1 (fr) 1984-05-28 1985-05-10 Dispositif d'entraînement de porte d'ascenseur comportant un dispositif de verrouillage

Country Status (6)

Country Link
EP (1) EP0164581B1 (fr)
AT (1) ATE28847T1 (fr)
CH (1) CH663406A5 (fr)
DE (1) DE3560443D1 (fr)
ES (1) ES8607876A1 (fr)
FI (1) FI77208C (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206331A (en) * 1987-05-26 1989-01-05 Otis Elevator Plc Elevator car door locking mechanism
GB2207122A (en) * 1987-07-18 1989-01-25 Mitsubishi Electric Corp Door lock for an elevator car
EP0332841A1 (fr) * 1988-03-18 1989-09-20 Inventio Ag Dispositif entraînement de porte avec mécanisme de verrouillage pour élévateurs
US4926974A (en) * 1989-02-13 1990-05-22 Inventio Ag Elevator car with improved car door clutch
EP0410774A2 (fr) * 1989-07-27 1991-01-30 Otis Elevator Company Mécanisme d'entraînement des portes de cages d'un système d'ascenseur
EP0482264A1 (fr) * 1989-07-27 1992-04-29 Otis Elevator Company Méchanisme pour bloquer et débloquer de boulons de verrouillage pour portes automatiques d'ascenseurs
EP0484169A2 (fr) * 1990-10-31 1992-05-06 Otis Elevator Company Système de verrouillage d'une porte
US5246089A (en) * 1991-05-14 1993-09-21 Inventio Ag Door drive apparatus with locking mechanism for elevators
US5377785A (en) * 1993-07-12 1995-01-03 Inventio Ag Door closing system
EP0709334A1 (fr) * 1994-10-31 1996-05-01 Kone Oy Appareil de verrouillage de la porte d'une cabine d'ascenseur et procédé pour bloquer et débloquer une porte de cabine
US5575357A (en) * 1994-04-25 1996-11-19 Inventio Ag Entraining apparatus for elevator doors
EP0744373A2 (fr) * 1995-05-22 1996-11-27 Franz Xaver Meiller Fahrzeug- und Maschinenfabrik-GmbH & Co KG Dispositif d'actionnement pour porte d'ascenseur
WO1997010168A1 (fr) * 1995-09-13 1997-03-20 Kone Oy Dispositif pour l'ouverture et la fermeture de portes automatiques d'ascenseur et dispositif d'accouplement de porte
EP0839753A1 (fr) * 1996-10-29 1998-05-06 Inventio Ag Dispositif pour l'ouverture et la fermeture de porte de cabin et de la porte du palier d'un ascenseur
US6021871A (en) * 1996-10-29 2000-02-08 Inventio Ag Apparatus for opening and closing a car door and a shaft door of an elevator installation
AT412339B (de) * 2002-04-22 2005-01-25 Wittur Gmbh Vorrichtung zur betätigung und verriegelung von aufzugstüren mit mitnehmerkufen
CN100534888C (zh) * 2004-02-11 2009-09-02 维托公开股份有限公司 用于对电梯门进行控制和闩锁的装置
CN105035921A (zh) * 2015-08-24 2015-11-11 杭州临安众方机电有限公司 一种电梯集成轿门锁的门刀
EP3699131A1 (fr) * 2018-08-20 2020-08-26 Otis Elevator Company Verrouillage de porte de véhicule
US11247872B2 (en) 2018-10-17 2022-02-15 Otis Elevator Company Elevator car door interlock

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2119650B1 (es) * 1995-08-04 1999-05-16 Technoresearch Promotion Sa Dispositivo de apertura y cierre automatico de las hojas de puerta de cabina y de rellano de elevadores.
CN109422183B (zh) * 2017-08-31 2022-02-11 富士达株式会社 电梯的轿厢用门装置
WO2024094398A1 (fr) 2022-11-04 2024-05-10 Inventio Ag Composant actionnable pour activer ou désactiver une unité modulaire d'un système de transport de passagers et moyen de verrouillage pour une porte d'ascenseur et dispositif de sécurité pour une cabine d'ascenseur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458402A (en) * 1944-02-29 1949-01-04 Maintenance Company Inc Automatic operator for elevator doors and hall doors
CH481836A (de) * 1969-02-04 1969-11-30 Gebauer & Cie Türbetätigungs- und -Verriegelungsvorrichtung an einer Aufzugsanlage
US3605952A (en) * 1969-09-30 1971-09-20 Otis Elevator Co Door coupling apparatus for elevator systems
CH523199A (de) * 1970-12-30 1972-05-31 Inventio Ag Türantriebsvorrichtung mit Verriegelungsmechanismus für Aufzüge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458402A (en) * 1944-02-29 1949-01-04 Maintenance Company Inc Automatic operator for elevator doors and hall doors
CH481836A (de) * 1969-02-04 1969-11-30 Gebauer & Cie Türbetätigungs- und -Verriegelungsvorrichtung an einer Aufzugsanlage
US3605952A (en) * 1969-09-30 1971-09-20 Otis Elevator Co Door coupling apparatus for elevator systems
CH523199A (de) * 1970-12-30 1972-05-31 Inventio Ag Türantriebsvorrichtung mit Verriegelungsmechanismus für Aufzüge

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206331B (en) * 1987-05-26 1991-10-02 Otis Elevator Plc Elevator car door locking mechanism
GB2206331A (en) * 1987-05-26 1989-01-05 Otis Elevator Plc Elevator car door locking mechanism
GB2207122A (en) * 1987-07-18 1989-01-25 Mitsubishi Electric Corp Door lock for an elevator car
GB2207122B (en) * 1987-07-18 1991-10-09 Mitsubishi Electric Corp Door lock for an elevator car
EP0332841A1 (fr) * 1988-03-18 1989-09-20 Inventio Ag Dispositif entraînement de porte avec mécanisme de verrouillage pour élévateurs
US4947964A (en) * 1988-03-18 1990-08-14 Inventio Ag Door drive apparatus with locking mechanism for elevators
AU613162B2 (en) * 1988-03-18 1991-07-25 Inventio Ag Door drive device with locking mechanism for lifts
US4926974A (en) * 1989-02-13 1990-05-22 Inventio Ag Elevator car with improved car door clutch
EP0410774A2 (fr) * 1989-07-27 1991-01-30 Otis Elevator Company Mécanisme d'entraînement des portes de cages d'un système d'ascenseur
EP0482264A1 (fr) * 1989-07-27 1992-04-29 Otis Elevator Company Méchanisme pour bloquer et débloquer de boulons de verrouillage pour portes automatiques d'ascenseurs
EP0410774A3 (en) * 1989-07-27 1992-06-03 Otis Elevator Company Elevator system hoistway door operating mechanism
EP0484169A2 (fr) * 1990-10-31 1992-05-06 Otis Elevator Company Système de verrouillage d'une porte
EP0484169A3 (en) * 1990-10-31 1993-04-21 Otis Elevator Company Door locking system
US5246089A (en) * 1991-05-14 1993-09-21 Inventio Ag Door drive apparatus with locking mechanism for elevators
US5377785A (en) * 1993-07-12 1995-01-03 Inventio Ag Door closing system
US5575357A (en) * 1994-04-25 1996-11-19 Inventio Ag Entraining apparatus for elevator doors
US5690189A (en) * 1994-10-31 1997-11-25 Kone Oy Apparatus and method for locking and unlocking the door of an elevator car
AU688966B2 (en) * 1994-10-31 1998-03-19 Kone Oy Apparatus for locking the door of an elevator car and procedure for locking and unlocking a car door
EP0709334A1 (fr) * 1994-10-31 1996-05-01 Kone Oy Appareil de verrouillage de la porte d'une cabine d'ascenseur et procédé pour bloquer et débloquer une porte de cabine
EP0744373A2 (fr) * 1995-05-22 1996-11-27 Franz Xaver Meiller Fahrzeug- und Maschinenfabrik-GmbH & Co KG Dispositif d'actionnement pour porte d'ascenseur
EP0744373A3 (fr) * 1995-05-22 1997-01-22 Franz Xaver Meiller Fahrzeug- und Maschinenfabrik-GmbH & Co KG Dispositif d'actionnement pour porte d'ascenseur
AU717228B2 (en) * 1995-09-13 2000-03-23 Kone Corporation Arrangement in the opening and closing of automatic elevator doors, and a door coupler
WO1997010168A1 (fr) * 1995-09-13 1997-03-20 Kone Oy Dispositif pour l'ouverture et la fermeture de portes automatiques d'ascenseur et dispositif d'accouplement de porte
CN1076005C (zh) * 1995-09-13 2001-12-12 科恩股份公司 自动电梯门的开闭装置和门联接器
US5988320A (en) * 1995-09-13 1999-11-23 Kone Corporation Arrangement in the opening and closing of automatic elevator door, and a door coupler
US6021871A (en) * 1996-10-29 2000-02-08 Inventio Ag Apparatus for opening and closing a car door and a shaft door of an elevator installation
EP0839753A1 (fr) * 1996-10-29 1998-05-06 Inventio Ag Dispositif pour l'ouverture et la fermeture de porte de cabin et de la porte du palier d'un ascenseur
AT412339B (de) * 2002-04-22 2005-01-25 Wittur Gmbh Vorrichtung zur betätigung und verriegelung von aufzugstüren mit mitnehmerkufen
US7252179B2 (en) 2002-04-22 2007-08-07 Wittur Ag Elevator-door latching and opening device
CN100534888C (zh) * 2004-02-11 2009-09-02 维托公开股份有限公司 用于对电梯门进行控制和闩锁的装置
CN105035921A (zh) * 2015-08-24 2015-11-11 杭州临安众方机电有限公司 一种电梯集成轿门锁的门刀
CN105035921B (zh) * 2015-08-24 2017-03-29 苏州和阳金属科技有限公司 一种电梯集成轿门锁的门刀
EP3699131A1 (fr) * 2018-08-20 2020-08-26 Otis Elevator Company Verrouillage de porte de véhicule
US11254542B2 (en) 2018-08-20 2022-02-22 Otis Elevator Company Car door interlock
US11247872B2 (en) 2018-10-17 2022-02-15 Otis Elevator Company Elevator car door interlock

Also Published As

Publication number Publication date
ES543532A0 (es) 1986-06-01
DE3560443D1 (en) 1987-09-17
FI851949A0 (fi) 1985-05-16
ATE28847T1 (de) 1987-08-15
EP0164581B1 (fr) 1987-08-12
ES8607876A1 (es) 1986-06-01
FI77208C (fi) 1989-02-10
FI77208B (fi) 1988-10-31
FI851949L (fi) 1985-11-29
CH663406A5 (de) 1987-12-15

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