EP0837828A1 - Method and arrangement in connection with an accumulator of a cable or the like - Google Patents

Method and arrangement in connection with an accumulator of a cable or the like

Info

Publication number
EP0837828A1
EP0837828A1 EP96910987A EP96910987A EP0837828A1 EP 0837828 A1 EP0837828 A1 EP 0837828A1 EP 96910987 A EP96910987 A EP 96910987A EP 96910987 A EP96910987 A EP 96910987A EP 0837828 A1 EP0837828 A1 EP 0837828A1
Authority
EP
European Patent Office
Prior art keywords
movable wheel
cable
force
accumulator
actuator
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
EP96910987A
Other languages
German (de)
French (fr)
Other versions
EP0837828B1 (en
Inventor
Marko MÄKINEN
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.)
Mindset Holding SA
Original Assignee
Nokia Maillefer Holdings SA
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 Nokia Maillefer Holdings SA filed Critical Nokia Maillefer Holdings SA
Publication of EP0837828A1 publication Critical patent/EP0837828A1/en
Application granted granted Critical
Publication of EP0837828B1 publication Critical patent/EP0837828B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/18Driven rotary elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/36Floating elements compensating for irregularities in supply or take-up of material

Definitions

  • the invention relates to a method in connection with an accumulator of a cable or the like, the accumulator being used to adjust the tension of the cable or the like during spooling, whereupon the cable or the like is made to pass around a movable wheel, preferably a movable wheel with a balancing spring, and the movable wheel provides the desired tension in the cable or the like.
  • the invention further relates to an arrangement in connection with an accumulator of a cable or the like.
  • This kind of accumulators are known at present especially in the cable industry, where the accumulator is used as a device that adjusts the cable tension to the desired level for example during spooling.
  • the accumulator comprises a movable wheel, which provides the cable with the desired force or tension.
  • the force is produced in the cable either by the mass of the movable wheel or by a separate actuator, which acts on the movable wheel .
  • the actuator may be for example a hydraulic or pneumatic cylinder, electric motor, solenoid or some other corresponding apparatus. In apparatuses utilizing the mass, tension can be adjusted simply by changing the position of the weight attached to the movable wheel .
  • the movable wheel may also comprise an associated balance system provided by means of a spring.
  • the balancing spring is used since the mass of the movable wheel causes a certain tension in the cable with its gravity, and since the tension caused by this mass may be greater than the desired minimum tension of the cable; it is thus necessary to reduce the mass of the movable wheel for example with a spring.
  • the purpose of the invention is to provide a method and arrangement by means of which the prior art drawbacks can be eliminated. This is achieved with the invention.
  • the method according to the invention is characterized by first measuring the acceleration and speed of the movable wheel, then determining the additional force resulting from the inertial mass of the movable wheel at the acceleration measured, and then adding the aforementioned additional force to the force applied by an actuator of the movable wheel on the movable wheel or subtracting the aforementioned additional force from the force applied by the actuator of the movable wheel on the movable wheel .
  • the arrangement according to the invention is in turn characterized in that the arrangement comprises first means arranged to measure the acceleration and speed of the movable wheel, second means arranged to determine the additional force resulting from the inertial mass of the movable wheel at the acceleration measured, and third means arranged to add the aforementioned additional force to the force applied by an actuator of the movable wheel on the movable wheel or to subtract the aforementioned additional force from the force applied by the actuator of the movable wheel on the movable wheel .
  • An alternative embodiment of the method according to the invention is characterized by first measuring the position of the movable wheel, then determining the spring force dependent on the spring constant of the spring balancing the movable wheel and on the position of the movable wheel, and adding the aforementioned additional force to the force applied by an actuator of the movable wheel on the movable wheel or subtracting the aforementioned additional force from the force applied by the actuator of the movable wheel on the movable wheel .
  • An alternative embodiment of the arrangement according to the invention is in turn characterized in that the arrangement comprises first means arranged to measure the position of the movable wheel, second means arranged to determine the spring force dependent on the spring constant of the spring balancing the movable wheel and on the position of the movable wheel, and third means arranged to add the aforementioned additional force to the force applied by an actuator of the movable wheel on the movable wheel or to subtract the aforementioned additional force from the force applied by the actuator of the movable wheel on the movable wheel.
  • the primary advantage of the invention is that the additional force caused by the inertial mass of the accumulator can be compensated for when the accumulator is in the accelerating state.
  • the tension caused by the accumulator in the cable or the like is also constant regardless of the acceleration of the accumulator.
  • Another advantage is that the variable force depending on the position and caused by the balancing spring of the accumulator can be compensated for. Therefore the tension produced by the accumulator in the cable or the like is constant regardless of the position of the accumulator and the balancing force of the spring.
  • a further advantage of the invention is its simplicity with respect to the advantages it provides, which makes the invention inexpensive to implement.
  • Reference numeral 1 in the figure generally denotes an accumulator of a spooler.
  • Reference numeral 2 denotes a movable wheel around which a cable or the like 3 is applied.
  • the movable wheel 2 provides the cable or the like 3 with a desired tension.
  • the force producing the tension T in the cable or the like is provided with an actuator 4, which may be for example a pneumatic cylinder.
  • the actuator 4 is arranged in the example of the figure to act on the movable wheel 2 in such a way that the wheel moves according to the arrows marked in the figure.
  • the level of the tension produced by the actuator 4 in the cable can be adjusted by regulating the actuator by means of a valve element 5.
  • the force producing the tension can also be provided by means of the mass of the movable wheel 2.
  • Reference numeral 6 denotes a spring balancing the load of the movable wheel.
  • the structure and the operation of the accumulator constitute fully conventional technology to a person skilled in the art, wherefore they will not be described in greater detail in this connection. It is only stated that the cable or the like 3 is guided onto the movable wheel 2 by means of suitably positioned guide wheels, as shown in the figure. According to an essential feature of the invention, the additional force, which may result from the inertial forces of the movable wheel 2 or from the position of the movable wheel 2 and the spring constant of the spring 6, is measured. The aforementioned additional force is taken into account when determining the force that is provided in the cable or the like 3 by means of the actuator 4.
  • the aforementioned essential feature can be implemented by first measuring the acceleration and speed of the movable wheel 2 and by then determining the additional force resulting from the inertial mass of the movable wheel 2 at the acceleration measured.
  • the additional force is added to the force that the actuator 4 of the movable wheel 2 applies on the movable wheel or it is subtracted from the force the actuator 4 of the movable wheel 2 applies thereon, depending on whether the additional force is positive or negative in the situation.
  • the essential feature of the invention can also be implemented by first measuring the position of the movable wheel 2, then determining the spring force dependent on the spring constant of the spring 6 balancing the movable wheel 2 and on the position of the movable wheel 2.
  • the aforementioned additional force is added to the force that the actuator 4 of the movable wheel 2 applies on the movable wheel or it is subtracted from the force the actuator 4 of the movable wheel 2 applies on the movable wheel, depending on whether the additional force is positive or negative in the situation.
  • the acceleration and speed of the movable wheel 2 can be measured by means of first means 7.
  • the first means 7 can also measure the position of the movable wheel 2.
  • the arrangement also comprises second means 8 that are arranged to determine the additional force resulting from the inertial mass of the movable wheel 2 at the acceleration measured above.
  • the second means 8 can also determine the additional force, i.e.
  • the arrangement also comprises third means 9 that are arranged either to add the aforementioned additional force to the force applied by the actuator 4 of the movable wheel 2 on the movable wheel or to subtract it from the force of the actuator 4, as described above.
  • the means 8 and 9 can be positioned in a control unit 10, as in the example of the figure.
  • the means 8 and 9 can be implemented for example by means of suitable processors and programming.
  • the invention provides a uniform tension of exactly the desired level within the entire operating range of the accumulator.
  • the actuator may be for example a hydraulic cylinder, an electric actuator etc.
  • the accumulator may ' consist of a lever construction as in the example of the figure, or of a linear accumulator wherein the movable wheel moves rectilinearly in the vertical direction.
  • the invention is not restricted to cables, either, but it can be used for example in connection with ropes, cable wires, wires and other similar products. Even though the invention is described above by means of an embodiment related to a cable spooler, it should be noted that the invention is not restricted in any way to spoolers, but it can also be applied in other connections.

Landscapes

  • Tension Adjustment In Filamentary Materials (AREA)
  • Electric Cable Installation (AREA)
  • Communication Cables (AREA)
  • Bridges Or Land Bridges (AREA)
  • Ropes Or Cables (AREA)
  • Paper (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

The invention relates to a method and arrangement in connection with an accumulator of a cable or the like, the accumulator being used to adjust the tension of the cable (3) during spooling, so that the cable (3) is made to pass around a movable wheel (2), which provides the cable (3) with the desired tension. In order to produce even tension, for example the acceleration and speed of the movable wheel (2) are measured first, the additional force resulting from the inertial mass of the movable wheel (2) at the acceleration measured is determined next, and the aforementioned additional force is added to the force applied by an actuator (4) of the movable wheel (2) on the movable wheel, or the aforementioned additional force is subtracted from the force applied by the actuator (4) of the movable wheel (2) on the movable wheel. During the measurement, the effect of the spring constant of the balancing spring (6) of the movable wheel and the effect of the position of the movable wheel (2) on the force produced by the spring can also be taken into account.

Description

Method and arrangement in connection with an accumulator of a cable or the like
The invention relates to a method in connection with an accumulator of a cable or the like, the accumulator being used to adjust the tension of the cable or the like during spooling, whereupon the cable or the like is made to pass around a movable wheel, preferably a movable wheel with a balancing spring, and the movable wheel provides the desired tension in the cable or the like. The invention further relates to an arrangement in connection with an accumulator of a cable or the like.
This kind of accumulators are known at present especially in the cable industry, where the accumulator is used as a device that adjusts the cable tension to the desired level for example during spooling.
Known accumulators operate in such a way that the accumulator comprises a movable wheel, which provides the cable with the desired force or tension. The force is produced in the cable either by the mass of the movable wheel or by a separate actuator, which acts on the movable wheel . The actuator may be for example a hydraulic or pneumatic cylinder, electric motor, solenoid or some other corresponding apparatus. In apparatuses utilizing the mass, tension can be adjusted simply by changing the position of the weight attached to the movable wheel .
The movable wheel may also comprise an associated balance system provided by means of a spring. The balancing spring is used since the mass of the movable wheel causes a certain tension in the cable with its gravity, and since the tension caused by this mass may be greater than the desired minimum tension of the cable; it is thus necessary to reduce the mass of the movable wheel for example with a spring.
Previously known apparatuses have for example such a disadvantage, however, that the inertial masses of the movable wheel produce rather considerable additional tension peaks in the cable. This means that when the position of the movable wheel changes at a certain speed and acceleration, the total force which is caused by the inertial mass and which produces tension peaks in the cable also changes. Another drawback is that the spring force of the balancing spring changes as a function of the position of the movable wheel, so that the tension produced by the movable wheel in the cable varies together with the variation of the position of the movable wheel. Due to the above-described matters, it is difficult to maintain the tension exactly at the desired level with the previously known apparatuses.
The purpose of the invention is to provide a method and arrangement by means of which the prior art drawbacks can be eliminated. This is achieved with the invention. The method according to the invention is characterized by first measuring the acceleration and speed of the movable wheel, then determining the additional force resulting from the inertial mass of the movable wheel at the acceleration measured, and then adding the aforementioned additional force to the force applied by an actuator of the movable wheel on the movable wheel or subtracting the aforementioned additional force from the force applied by the actuator of the movable wheel on the movable wheel . The arrangement according to the invention is in turn characterized in that the arrangement comprises first means arranged to measure the acceleration and speed of the movable wheel, second means arranged to determine the additional force resulting from the inertial mass of the movable wheel at the acceleration measured, and third means arranged to add the aforementioned additional force to the force applied by an actuator of the movable wheel on the movable wheel or to subtract the aforementioned additional force from the force applied by the actuator of the movable wheel on the movable wheel . An alternative embodiment of the method according to the invention is characterized by first measuring the position of the movable wheel, then determining the spring force dependent on the spring constant of the spring balancing the movable wheel and on the position of the movable wheel, and adding the aforementioned additional force to the force applied by an actuator of the movable wheel on the movable wheel or subtracting the aforementioned additional force from the force applied by the actuator of the movable wheel on the movable wheel . An alternative embodiment of the arrangement according to the invention is in turn characterized in that the arrangement comprises first means arranged to measure the position of the movable wheel, second means arranged to determine the spring force dependent on the spring constant of the spring balancing the movable wheel and on the position of the movable wheel, and third means arranged to add the aforementioned additional force to the force applied by an actuator of the movable wheel on the movable wheel or to subtract the aforementioned additional force from the force applied by the actuator of the movable wheel on the movable wheel.
The primary advantage of the invention is that the additional force caused by the inertial mass of the accumulator can be compensated for when the accumulator is in the accelerating state. Thus the tension caused by the accumulator in the cable or the like is also constant regardless of the acceleration of the accumulator. Another advantage is that the variable force depending on the position and caused by the balancing spring of the accumulator can be compensated for. Therefore the tension produced by the accumulator in the cable or the like is constant regardless of the position of the accumulator and the balancing force of the spring. A further advantage of the invention is its simplicity with respect to the advantages it provides, which makes the invention inexpensive to implement.
The invention will be described below in greater detail by means of a preferred embodiment shown in the accompanying drawing, in which the only figure illustrates the characterizing features of the arrangement according to the invention.
Reference numeral 1 in the figure generally denotes an accumulator of a spooler. Reference numeral 2 denotes a movable wheel around which a cable or the like 3 is applied. The movable wheel 2 provides the cable or the like 3 with a desired tension. In the example of the figure, the force producing the tension T in the cable or the like is provided with an actuator 4, which may be for example a pneumatic cylinder. The actuator 4 is arranged in the example of the figure to act on the movable wheel 2 in such a way that the wheel moves according to the arrows marked in the figure. The level of the tension produced by the actuator 4 in the cable can be adjusted by regulating the actuator by means of a valve element 5. The force producing the tension can also be provided by means of the mass of the movable wheel 2. Reference numeral 6 denotes a spring balancing the load of the movable wheel.
The structure and the operation of the accumulator constitute fully conventional technology to a person skilled in the art, wherefore they will not be described in greater detail in this connection. It is only stated that the cable or the like 3 is guided onto the movable wheel 2 by means of suitably positioned guide wheels, as shown in the figure. According to an essential feature of the invention, the additional force, which may result from the inertial forces of the movable wheel 2 or from the position of the movable wheel 2 and the spring constant of the spring 6, is measured. The aforementioned additional force is taken into account when determining the force that is provided in the cable or the like 3 by means of the actuator 4.
The aforementioned essential feature can be implemented by first measuring the acceleration and speed of the movable wheel 2 and by then determining the additional force resulting from the inertial mass of the movable wheel 2 at the acceleration measured. The additional force is added to the force that the actuator 4 of the movable wheel 2 applies on the movable wheel or it is subtracted from the force the actuator 4 of the movable wheel 2 applies thereon, depending on whether the additional force is positive or negative in the situation.
The essential feature of the invention can also be implemented by first measuring the position of the movable wheel 2, then determining the spring force dependent on the spring constant of the spring 6 balancing the movable wheel 2 and on the position of the movable wheel 2. The aforementioned additional force is added to the force that the actuator 4 of the movable wheel 2 applies on the movable wheel or it is subtracted from the force the actuator 4 of the movable wheel 2 applies on the movable wheel, depending on whether the additional force is positive or negative in the situation. It is clear that when the actuator 4 is compensated, it is naturally possible to use both the additional force based on taking into account the inertial forces and the additional force based on the spring constant of the balancing spring and on the position of the movable wheel, if the accumulator has such a construction that it comprises for example a balancing spring for the movable wheel, among others . The acceleration and speed of the movable wheel 2 can be measured by means of first means 7. The first means 7 can also measure the position of the movable wheel 2. The arrangement also comprises second means 8 that are arranged to determine the additional force resulting from the inertial mass of the movable wheel 2 at the acceleration measured above. The second means 8 can also determine the additional force, i.e. spring force, dependent on the spring constant of the spring 6 balancing the movable wheel 2 and on the position of the movable wheel 2. The arrangement also comprises third means 9 that are arranged either to add the aforementioned additional force to the force applied by the actuator 4 of the movable wheel 2 on the movable wheel or to subtract it from the force of the actuator 4, as described above. The means 8 and 9 can be positioned in a control unit 10, as in the example of the figure. The means 8 and 9 can be implemented for example by means of suitable processors and programming.
The invention provides a uniform tension of exactly the desired level within the entire operating range of the accumulator.
The above-described embodiment is not intended to limit the invention in any way, but the invention can be modified freely within the scope of the claims. It is thus clear that the arrangement according to the invention or the details thereof do not necessarily have to correspond exactly to those shown in the figure, but other kinds of arrangements are also possible. Instead of a pneumatic cylinder, the actuator may be for example a hydraulic cylinder, an electric actuator etc. The accumulator may'consist of a lever construction as in the example of the figure, or of a linear accumulator wherein the movable wheel moves rectilinearly in the vertical direction. The invention is not restricted to cables, either, but it can be used for example in connection with ropes, cable wires, wires and other similar products. Even though the invention is described above by means of an embodiment related to a cable spooler, it should be noted that the invention is not restricted in any way to spoolers, but it can also be applied in other connections.

Claims

Claims
1. A method in connection with an accumulator of a cable or the like, the accumulator being used to adjust the tension of the cable or the like (3) during spooling, whereupon the cable or the like (3) is made to pass around a movable wheel (2) , which produces the desired tension in the cable or the like (3) , c h a r a c t e r i z e d by first measuring the acceleration and speed of the movable wheel (2) , then determining the additional force resulting from the inertial mass of the movable wheel (2) at the acceleration measured, and then adding the aforementioned additional force to the force applied by an actuator (4) of the movable wheel (2) on the movable wheel or subtracting the aforementioned additional force from the force applied by the actuator of the movable wheel (2) on the movable wheel.
2. An arrangement in connection with an accumulator of a cable or the like, the accumulator being used to adjust the tension of the cable or the like (3) during spooling, so that the cable or the like
(3) is made to pass around a movable wheel (2) , which is arranged to provide the cable or the like (3) with the desired tension, c h a r a c t e r i z e d in that the arrangement comprises first means (7) arranged to measure the acceleration and speed of the movable wheel
(2) , second means (8) arranged to determine the additional force resulting from the inertial mass of the movable wheel (2) at the acceleration measured, and third means (9) arranged to add the aforementioned additional force to the force applied by an actuator (4) of the movable wheel (2) on the movable wheel or to subtract the aforementioned additional force from the force applied by the actuator (4) of the movable wheel
(2) on the movable wheel.
3. A method in connection with an accumulator of a cable or the like, the accumulator being used to adjust the tension of the cable or the like (3) during spooling, so that the cable or the like (3) is made to pass around a movable wheel (2) with a balancing spring (6) and the movable wheel (2) provides the cable or the like (3) with the desired tension, c h a r a c t e r- i z e d by first measuring the position of the movable wheel (2) , then determining the spring force dependent on the spring constant of the spring (6) balancing the movable wheel (2) and on the position of the movable wheel, and adding the aforementioned additional force to the force applied by an actuator (4) of the movable wheel (2) on the movable wheel or subtracting the aforementioned additional force from the force applied by the actuator (4) of the movable wheel (2) on the movable wheel .
4. An arrangement in connection with an accumulator of a cable or the like, the accumulator being used to adjust the tension of the cable or the like (3) during spooling, so that the cable or the like
(3) is made to pass around a movable wheel (2) with a balancing spring (6) and the movable wheel (2) is arranged to provide the cable or the like (3) with the desired tension, c h a r a c t e r i z e d in that the arrangement comprises first means (7) arranged to measure the position of the movable wheel (2) , second means (8) arranged to determine the spring force dependent on the spring constant of the spring (6) balancing the movable wheel (2) and on the position of the movable wheel (2) , and third means (9) arranged to add the aforementioned additional force to the force applied by an actuator (4) of the movable wheel (2) on the movable wheel or to subtract the aforementioned additional force from the force applied by the actuator (4) of the movable wheel (2) on the movable wheel.
EP96910987A 1995-07-06 1996-04-23 Method and arrangement in connection with an accumulator of a cable or the like Expired - Lifetime EP0837828B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI953342A FI97795C (en) 1995-07-06 1995-07-06 Method and apparatus for accumulating a cable or the like
FI953342 1995-07-06
PCT/FI1996/000220 WO1997002203A1 (en) 1995-07-06 1996-04-23 Method and arrangement in connection with an accumulator of a cable or the like

Publications (2)

Publication Number Publication Date
EP0837828A1 true EP0837828A1 (en) 1998-04-29
EP0837828B1 EP0837828B1 (en) 2001-10-17

Family

ID=8543751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96910987A Expired - Lifetime EP0837828B1 (en) 1995-07-06 1996-04-23 Method and arrangement in connection with an accumulator of a cable or the like

Country Status (9)

Country Link
EP (1) EP0837828B1 (en)
JP (1) JPH11508527A (en)
KR (1) KR100436387B1 (en)
CN (1) CN1190378A (en)
AT (1) ATE207033T1 (en)
AU (1) AU5401296A (en)
DE (1) DE69616061T2 (en)
FI (1) FI97795C (en)
WO (1) WO1997002203A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021148922A1 (en) * 2020-01-20 2021-07-29 Lohia Corp Limited A winding apparatus and a method for winding continuously arriving yarn or slit film tapes

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI112464B (en) * 1998-04-17 2003-12-15 T Drill Oy Dispensing device with adjustable force for roll-packed materials
EP1975106B1 (en) * 2007-03-26 2012-07-18 Lunatone Industrielle Elektronik GmbH Yarn tension
EP3615464A1 (en) * 2017-04-24 2020-03-04 Bartell Machinery Systems L.L.C Modular festoon system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090504A1 (en) * 1982-03-04 1983-10-05 DAVID PARR & ASSOCIATES LIMITED Spooling machines
GB8421448D0 (en) * 1984-08-23 1984-09-26 Taliana Sa Coiling pile weatherstrip

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9702203A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021148922A1 (en) * 2020-01-20 2021-07-29 Lohia Corp Limited A winding apparatus and a method for winding continuously arriving yarn or slit film tapes

Also Published As

Publication number Publication date
WO1997002203A1 (en) 1997-01-23
DE69616061T2 (en) 2002-03-14
KR100436387B1 (en) 2004-10-14
KR19990028218A (en) 1999-04-15
JPH11508527A (en) 1999-07-27
CN1190378A (en) 1998-08-12
FI953342A0 (en) 1995-07-06
FI97795C (en) 1997-02-25
FI97795B (en) 1996-11-15
ATE207033T1 (en) 2001-11-15
AU5401296A (en) 1997-02-05
EP0837828B1 (en) 2001-10-17
DE69616061D1 (en) 2001-11-22

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