EP0415218A1 - Placement of a drive unit for an elevator - Google Patents

Placement of a drive unit for an elevator Download PDF

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Publication number
EP0415218A1
EP0415218A1 EP90115891A EP90115891A EP0415218A1 EP 0415218 A1 EP0415218 A1 EP 0415218A1 EP 90115891 A EP90115891 A EP 90115891A EP 90115891 A EP90115891 A EP 90115891A EP 0415218 A1 EP0415218 A1 EP 0415218A1
Authority
EP
European Patent Office
Prior art keywords
elevator
space
machine
car
elevator car
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
EP90115891A
Other languages
German (de)
French (fr)
Other versions
EP0415218B1 (en
Inventor
Pentti Alasentie
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.)
Kone Elevator GmbH
Original Assignee
Kone Elevator GmbH
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=8528902&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0415218(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kone Elevator GmbH filed Critical Kone Elevator GmbH
Priority to DE9018181U priority Critical patent/DE9018181U1/en
Publication of EP0415218A1 publication Critical patent/EP0415218A1/en
Application granted granted Critical
Publication of EP0415218B1 publication Critical patent/EP0415218B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/001—Arrangement of controller, e.g. location
    • B66B11/002—Arrangement of controller, e.g. location in the hoistway
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable

Definitions

  • the present invention relates to an elevator comprising an elevator car travelling in an elevator shaft, at least one vertical guide rail, a control unit for controlling the elevator, a machine for driving the elevator car and a means for transmitting the driving power from the machine to the elevator car, the driving machine and the control unit of the elevator being placed in a space provided beside the elevator shaft (1) below the lowest landing,
  • FI-patent publication 50864 describes a solution in which the rope suspension is so implemented that the driving machine can be placed lower down.
  • the lifting rope runs from the elevator car to the machine via a diverting pulley placed at the top end of a guide rail, said pulley being so mounted on the guide rail that the latter receives the load imposed on the pulley by the lifting rope.
  • the elevator car and its load are supported by one or more guide rails.
  • the object of the present invention is to achieve a space-­saving solution that is also easy to maintain.
  • the inven­tion is characterized in that the space where the driving machine and the control unit of the elevator are placed is covered at the top by an openable cover structure.
  • a preferred embodiment of the invention is character strictlyized in that the cover structure forms a safety fence when opened.
  • Another preferred embodiment of the invention is char­acterized in that the space together with its equipment is manufactured in factory and transported and installed as a complete unit.
  • the invention offers many advantages as compared to previ­ously known techniques.
  • One of them is that no separate ma­chine room is required.
  • the fact that the machine space is placed in conjunction with the bottom well off the elevator shaft reduces the costs as compared to the building of a separate machine room.
  • the machine space is of a size that allows it to be manufactured in factory and transported and installed as a complete unit. An ordinary machine room is too large to be produced in this way.
  • the machine space can be so placed that the noise of the machine will cause only minimal disturbance to the people living in the building.
  • the electricity supply cables required are shorter than in the case of a machine placed on top of the shaft. If a traction sheave machine is used, the angle of contact be­tween the rope and the traction sheave is over 180°.
  • Fig. 1 shows an elevator shaft 1 accommodating a car 2 and a counterweight 3.
  • the elevator car is driven by means of a lifting rope (or lifting ropes) 7 by a driving machine 4, which in this embodiment consists of a motor 5, a traction sheave 6 and a power transmission 23 placed between them (fig.2).
  • the driving machine is placed in a space 8 provided for it beside the elevator shaft 1 below the lowest landing.
  • the lifting rope runs from the traction sheave 6 to a diverting pulley 9 placed below the elevator car and then up over a diverting pulley 10 at the top of the elevator shaft, then down again round a diverting pulley 11 and further round another diverting pulley 12 (fig.
  • the machine space 8 is provided with a cover 25, which is turnably mounted with a hinge 24 in the top part of the space.
  • the cover is shown in a partly open position. If necessary, the cover may consist of more than one wicket, e.g. three wickets opening in different directions.
  • Figures 3 and 4 present another embodiment of the inven­tion, in which the elevator is driven by a drum machine.
  • the machine 4 is again placed in a space provided for it beside the elevator shaft below the lowest landing.
  • the machine consists of a motor 5 and a drum 17 rotated by it, the lifting rope(s) being attached to the drum.
  • the power transmission between the motor and the drum is not shown, but it can be imple­mented in any conventional way.
  • the rope runs from the drum 17 to a diverting pulley 18 below the elevator car 2 and then round another diverting pulley 19 at the top of the shaft, from where it returns down to a diverting pulley 11 mounted on the elevator car.
  • Fig. 3 does not show the cover structure, but it may be e.g. as presented in fig. 1. Note that diverting pulleys 18, 11 and 12 in fig. 4 are presented somewhat misleadingly, for, as shown in fig. 3, they are located below the elevator car, not above it as suggested by fig. 4. However, the aim has been to show the diverting pulleys in a complete form to give a clearer idea of the rope suspension arrangements.
  • Fig. 5 illustrates an embodiment in which the invention is applied to a hydraulic elevator.
  • the arrangement comprises a driving machine 4 consisting of a motor and a hydraulic unit known in themsleves.
  • the hydraulic unit is connected to the oil space of a hydraulic cylinder 21 by an oil pipe 20.
  • the piston 22 moving in the cylinder is directly attached to the elevator car 2.
  • a preferred embodiment is so implemented that the cover structure 25 forms a safety fence when opened.
  • the machine space 8 and the equipment belonging to it, such as the elevator machine 4 and its control unit, can be manufactured in factory and installed as a single package. In this case it is possible to mount the package in place e.g. by encasing it in concrete.
  • the machine space is placed on the front side of the elevator car, i.e. on that side where the elevator doors are located, where gener­ally there is more free space available than elsewhere.
  • the machine space can just as well be placed on any other side of the shaft if necessary.
  • a hydraulic elevator need not necessarily be of the direct-­acting type as illustrated by fig. 5, but indirect-acting hydraulic elevators are also possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Types And Forms Of Lifts (AREA)
  • Elevator Control (AREA)

Abstract

An elevator comprising an elevator car (2) travelling in an elevator shaft (1), at least one vertical guide rail , a control unit for controlling the eleva­tor, a driving machine (4) for moving the elevator car and a means (7) for transmitting the driving power from the machine to the elevator car. The inven­tion is so implemented that the driving machine (4) and the control unit of the elevator are placed in a space (8) pro­vided beside the elevator shaft (1) below the lowest landing, whereby said space (8) is covered at the top by an openable cover structure (25).

Description

  • The present invention relates to an elevator comprising an elevator car travelling in an elevator shaft, at least one vertical guide rail, a control unit for controlling the elevator, a machine for driving the elevator car and a means for transmitting the driving power from the machine to the elevator car, the driving machine and the control unit of the elevator being placed in a space provided beside the elevator shaft (1) below the lowest landing,
  • In previously known elevator constructions, the machine is generally placed above the elevator shaft. However, this is in many cases an impractical and expensive solution because it usually requires a separate machine room in the attic of the building. For this reason, efforts have been made to produce systems in which the driving machine is placed somewhere lower down.
  • FI-patent publication 50864 describes a solution in which the rope suspension is so implemented that the driving machine can be placed lower down. In this solution, the lifting rope runs from the elevator car to the machine via a diverting pulley placed at the top end of a guide rail, said pulley being so mounted on the guide rail that the latter receives the load imposed on the pulley by the lifting rope. In other words, the elevator car and its load are supported by one or more guide rails.
  • The object of the present invention is to achieve a space-­saving solution that is also easy to maintain. The inven­tion is characterized in that the space where the driving machine and the control unit of the elevator are placed is covered at the top by an openable cover structure.
  • A preferred embodiment of the invention is character­ized in that the cover structure forms a safety fence when opened.
  • Another preferred embodiment of the invention is char­acterized in that the space together with its equipment is manufactured in factory and transported and installed as a complete unit.
  • The invention offers many advantages as compared to previ­ously known techniques. One of them is that no separate ma­chine room is required. The fact that the machine space is placed in conjunction with the bottom well off the elevator shaft reduces the costs as compared to the building of a separate machine room. The machine space is of a size that allows it to be manufactured in factory and transported and installed as a complete unit. An ordinary machine room is too large to be produced in this way. The machine space can be so placed that the noise of the machine will cause only minimal disturbance to the people living in the building. The electricity supply cables required are shorter than in the case of a machine placed on top of the shaft. If a traction sheave machine is used, the angle of contact be­tween the rope and the traction sheave is over 180°. In traditional elevator suspension, this angle is under 180°. The required friction force is therefore achieved with a smaller undercut of the groove, which means that the ropes will last longer. The machine space of the elevator is more easily accessible for maintenance. It also makes it easier to enter the space under the car during installation.
  • In the following, the invention is described by the aid of examples of preferred embodiments, reference being made to the drawing attached, wherein:
    • Fig. 1 shows a lateral view of a solution representing an embodiment of the invention.
    • Fig. 2 shows a top view of the solution of fig. 1 in a larger scale.
    • Fig. 3 shows a lateral view of a solution representing an another embodiment of the invention.
    • Fig. 4 shows a top view of the solution of fig. 3 in a larger scale.
    • Fig. 5 shows yet another embodiment of the invention in lateral view.
  • Fig. 1 shows an elevator shaft 1 accommodating a car 2 and a counterweight 3. The elevator car is driven by means of a lifting rope (or lifting ropes) 7 by a driving machine 4, which in this embodiment consists of a motor 5, a traction sheave 6 and a power transmission 23 placed between them (fig.2). As provided by the invention, the driving machine is placed in a space 8 provided for it beside the elevator shaft 1 below the lowest landing. The lifting rope runs from the traction sheave 6 to a diverting pulley 9 placed below the elevator car and then up over a diverting pulley 10 at the top of the elevator shaft, then down again round a diverting pulley 11 and further round another diverting pulley 12 (fig. 2) placed at the same horizontal level but on the opposite side of the car, from where it runs up again and is anchored at the top of the shaft. Diverting pulleys 11 and 12 are mounted e.g. at the bottom of the elevator car, so that the car will move along with these pulleys. The opposite end of the lifting rope is also anchored at the shaft top, from where it runs down round a diverting pulley 13 attached to and moving the counter­weight 3, then up again round another diverting pulley 14, from where the rope runs down towards the bottom of the shaft, passes round a diverting pulley 15 and goes further to the traction sheave 6. The elevator shaft is naturally provided with at least one guide rail 16 (fig. 2) for the car. Fig. 2 shows several parallel lifting ropes, whereas in fig. 1, for the sake of clarity, only one rope is shown. As regards the invention, the number of ropes is in no way limited.
  • The machine space 8 is provided with a cover 25, which is turnably mounted with a hinge 24 in the top part of the space. In fig. 2, the cover is shown in a partly open position. If necessary, the cover may consist of more than one wicket, e.g. three wickets opening in different directions.
  • Figures 3 and 4 present another embodiment of the inven­tion, in which the elevator is driven by a drum machine. In this case, no counterweight is needed, so the rope suspen­sion is simpler. The machine 4 is again placed in a space provided for it beside the elevator shaft below the lowest landing. In this embodiment, the machine consists of a motor 5 and a drum 17 rotated by it, the lifting rope(s) being attached to the drum. The power transmission between the motor and the drum is not shown, but it can be imple­mented in any conventional way. The rope runs from the drum 17 to a diverting pulley 18 below the elevator car 2 and then round another diverting pulley 19 at the top of the shaft, from where it returns down to a diverting pulley 11 mounted on the elevator car. Again, the rope passes round another diverting pulley 12 (fig. 4) provided on the other side of the car and goes up to its anchorage at the top of the shaft. Fig. 3 does not show the cover structure, but it may be e.g. as presented in fig. 1. Note that diverting pulleys 18, 11 and 12 in fig. 4 are presented somewhat misleadingly, for, as shown in fig. 3, they are located below the elevator car, not above it as suggested by fig. 4. However, the aim has been to show the diverting pulleys in a complete form to give a clearer idea of the rope suspension arrangements.
  • Fig. 5 illustrates an embodiment in which the invention is applied to a hydraulic elevator. The arrangement comprises a driving machine 4 consisting of a motor and a hydraulic unit known in themsleves. The hydraulic unit is connected to the oil space of a hydraulic cylinder 21 by an oil pipe 20. The piston 22 moving in the cylinder is directly attached to the elevator car 2.
  • A preferred embodiment is so implemented that the cover structure 25 forms a safety fence when opened.
  • The machine space 8 and the equipment belonging to it, such as the elevator machine 4 and its control unit, can be manufactured in factory and installed as a single package. In this case it is possible to mount the package in place e.g. by encasing it in concrete.
  • In the embodiments described above, the machine space is placed on the front side of the elevator car, i.e. on that side where the elevator doors are located, where gener­ally there is more free space available than elsewhere. However, the machine space can just as well be placed on any other side of the shaft if necessary.
  • It is obvious to a person skilled in the art that different embodiments of the invention are not restricted to the ex­amples described above, but that they may instead be varied within the scope of the following claims. Thus, e.g. a hydraulic elevator need not necessarily be of the direct-­acting type as illustrated by fig. 5, but indirect-acting hydraulic elevators are also possible.

Claims (5)

1. An elevator comprising an elevator car (2) travelling in an elevator shaft (1), at least one vertical guide rail (16), a control unit for controlling the elevator, a driving machine (4) for moving the elevator car and a means (7; 20-22) for transmitting the driving power from the machine to the elevator car, the driving machine (4) and the control unit of the elevator being placed in a space (8) provided beside the elevator shaft (1) below the lowest landing, characterized in that said space (8) is covered at the top by an openable cover structure (25).
2. Elevator according to claim 1, character­ized in that said cover structure forms a safety fence when opened.
3. Elevator according to claim 1 or 2 , char­acterized in that the space (8) together with its equipment is manufactured in factory and transported and installed as a complete unit.
4. Elevator according to claim 3, character­ized in that the space (8) together with its equipment is mounted in place by encasing it in concrete.
5. Elevator according to any one of claims 1-4, char­acterized in that the machine space (8) is placed on the front side of the elevator car (2), i.e. on that side where the elevator doors are located.
EP19900115891 1989-08-29 1990-08-20 Placement of a drive unit for an elevator Revoked EP0415218B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9018181U DE9018181U1 (en) 1989-08-29 1990-08-20 Elevator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI894039A FI894039A (en) 1989-08-29 1989-08-29 PLACERING AV EN DRIFTSENHET FOER EN HIS.
FI894039 1989-08-29

Publications (2)

Publication Number Publication Date
EP0415218A1 true EP0415218A1 (en) 1991-03-06
EP0415218B1 EP0415218B1 (en) 1993-11-03

Family

ID=8528902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900115891 Revoked EP0415218B1 (en) 1989-08-29 1990-08-20 Placement of a drive unit for an elevator

Country Status (4)

Country Link
EP (1) EP0415218B1 (en)
DE (1) DE69004382T2 (en)
ES (1) ES2046627T3 (en)
FI (1) FI894039A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5351788A (en) * 1992-09-18 1994-10-04 Kone Elevator Gmbh Rope arrangement for an elevator car
EP0749930A3 (en) * 1995-06-22 1997-02-26 Kone Oy Traction sheave elevator
WO1997042119A1 (en) * 1996-05-09 1997-11-13 Inventio Ag Containing structure for lift machinery
DE29717555U1 (en) * 1997-06-19 1998-02-26 Wittur Aufzugteile GmbH & Co, 85259 Wiedenzhausen Elevator
AU693521B2 (en) * 1994-05-04 1998-07-02 Kone Oy Traction sheave elevator, hoisting unit and machine space
US5823298A (en) * 1995-06-22 1998-10-20 Kone Oy Traction sheave elevator
DE19827497A1 (en) * 1997-06-19 1999-02-25 Wittur Aufzugteile Gmbh & Co Lift shaft arrangement
WO1999043596A2 (en) * 1998-02-26 1999-09-02 Otis Elevator Company Elevator system having drive motor located adjacent to hoistway door
DE19814639A1 (en) * 1998-03-13 1999-09-23 Thyssen Aufzuege Berlin Gmbh Lift installation for attachment to existing building of slab construction
ES2144937A1 (en) * 1997-11-13 2000-06-16 Elevadores Jarre S L Improvements to elevator (lift) installations
US6148962A (en) * 1993-06-28 2000-11-21 Kone Oy Traction sheave elevator, hoisting unit and machine space
US6247559B1 (en) 1998-11-02 2001-06-19 Inventio Ag Elevator with machine room below
WO2003048020A1 (en) * 2001-12-04 2003-06-12 Hillston Finance Limited Machine-room-less traction sheave elevator
US7025177B1 (en) * 1999-07-19 2006-04-11 Lg Industrial Systems Co., Ltd. Elevator system without machine
EP1942072A3 (en) * 1993-06-28 2008-10-01 Kone Corporation Traction sheave elevator
CN103112770A (en) * 2013-02-07 2013-05-22 郑钢 Laterally-arranged machine house traction-type car elevator
WO2024012652A1 (en) * 2022-07-11 2024-01-18 Kone Corporation Elevator and method of maintenance of pit of elevator shaft

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1997060A (en) * 1931-01-28 1935-04-09 Televator Corp Conveyer
US2004060A (en) * 1934-05-24 1935-06-04 Warner Elevator Mfg Company Residence elevator
US2395735A (en) * 1943-08-26 1946-02-26 Grigsby Harold Wallace Lift
FR2543933A1 (en) * 1983-04-11 1984-10-12 Mitsubishi Electric Corp DEVICE FORMING ELEVATOR
GB2155904A (en) * 1984-03-16 1985-10-02 Mitsubishi Electric Corp Elevator hoist apparatus
EP0228513A1 (en) * 1985-11-29 1987-07-15 USTO Aufzüge und Schallschutzanlagen GmbH Lift installation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1997060A (en) * 1931-01-28 1935-04-09 Televator Corp Conveyer
US2004060A (en) * 1934-05-24 1935-06-04 Warner Elevator Mfg Company Residence elevator
US2395735A (en) * 1943-08-26 1946-02-26 Grigsby Harold Wallace Lift
FR2543933A1 (en) * 1983-04-11 1984-10-12 Mitsubishi Electric Corp DEVICE FORMING ELEVATOR
GB2155904A (en) * 1984-03-16 1985-10-02 Mitsubishi Electric Corp Elevator hoist apparatus
EP0228513A1 (en) * 1985-11-29 1987-07-15 USTO Aufzüge und Schallschutzanlagen GmbH Lift installation

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5351788A (en) * 1992-09-18 1994-10-04 Kone Elevator Gmbh Rope arrangement for an elevator car
US6148962A (en) * 1993-06-28 2000-11-21 Kone Oy Traction sheave elevator, hoisting unit and machine space
US6651780B1 (en) 1993-06-28 2003-11-25 Kone Oy Traction sheave elevator, hoisting unit and machine space
EP1942072A3 (en) * 1993-06-28 2008-10-01 Kone Corporation Traction sheave elevator
AU693521B2 (en) * 1994-05-04 1998-07-02 Kone Oy Traction sheave elevator, hoisting unit and machine space
EP1112955A1 (en) * 1995-06-22 2001-07-04 Kone Corporation Traction sheave elevator
US5906251A (en) * 1995-06-22 1999-05-25 Kone Oy Traction sheave elevator
EP0749930A3 (en) * 1995-06-22 1997-02-26 Kone Oy Traction sheave elevator
CN1093502C (en) * 1995-06-22 2002-10-30 科恩股份公司 Drag wheel lift
US5823298A (en) * 1995-06-22 1998-10-20 Kone Oy Traction sheave elevator
AU721225B2 (en) * 1996-05-09 2000-06-29 Gmv S.P.A. Containing structure for lift machinery
WO1997042119A1 (en) * 1996-05-09 1997-11-13 Inventio Ag Containing structure for lift machinery
DE19827497B4 (en) * 1997-06-19 2005-02-17 Wittur Ag elevator
DE29717555U1 (en) * 1997-06-19 1998-02-26 Wittur Aufzugteile GmbH & Co, 85259 Wiedenzhausen Elevator
DE19827497A1 (en) * 1997-06-19 1999-02-25 Wittur Aufzugteile Gmbh & Co Lift shaft arrangement
ES2144937A1 (en) * 1997-11-13 2000-06-16 Elevadores Jarre S L Improvements to elevator (lift) installations
WO1999043596A3 (en) * 1998-02-26 1999-11-11 Otis Elevator Co Elevator system having drive motor located adjacent to hoistway door
WO1999043596A2 (en) * 1998-02-26 1999-09-02 Otis Elevator Company Elevator system having drive motor located adjacent to hoistway door
DE19814639C2 (en) * 1998-03-13 2002-02-28 Thyssen Aufzuege Berlin Gmbh Elevator system and method for connecting it to the staircase of an existing, prefabricated building
DE19814639A1 (en) * 1998-03-13 1999-09-23 Thyssen Aufzuege Berlin Gmbh Lift installation for attachment to existing building of slab construction
US6247559B1 (en) 1998-11-02 2001-06-19 Inventio Ag Elevator with machine room below
US7025177B1 (en) * 1999-07-19 2006-04-11 Lg Industrial Systems Co., Ltd. Elevator system without machine
EA005334B1 (en) * 2001-12-04 2005-02-24 Хиллстон Файненс Лимитед Machine-room-less traction sheave elevator
CN100371232C (en) * 2001-12-04 2008-02-27 希尔斯通财政有限公司 Machine-room-less traction sheave elevator
US7364019B2 (en) 2001-12-04 2008-04-29 Hillston Finance Limited C/O Aleman, Cordero, Galindo & Lee Trust (Bvi) Limited Machine-room-less traction sheave elevator
WO2003048020A1 (en) * 2001-12-04 2003-06-12 Hillston Finance Limited Machine-room-less traction sheave elevator
CN103112770A (en) * 2013-02-07 2013-05-22 郑钢 Laterally-arranged machine house traction-type car elevator
CN103112770B (en) * 2013-02-07 2015-07-08 苏州莱茵电梯制造有限公司 Laterally-arranged machine house traction-type car elevator
WO2024012652A1 (en) * 2022-07-11 2024-01-18 Kone Corporation Elevator and method of maintenance of pit of elevator shaft

Also Published As

Publication number Publication date
EP0415218B1 (en) 1993-11-03
FI894039A0 (en) 1989-08-29
FI894039A (en) 1991-03-02
DE69004382T2 (en) 1994-02-24
ES2046627T3 (en) 1994-02-01
DE69004382D1 (en) 1993-12-09

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