EP1259667B1 - Kontrollverfahren für eine webvorrichtung und webvorrichtung zur durchführung dieses verfahrens - Google Patents

Kontrollverfahren für eine webvorrichtung und webvorrichtung zur durchführung dieses verfahrens Download PDF

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Publication number
EP1259667B1
EP1259667B1 EP01910230A EP01910230A EP1259667B1 EP 1259667 B1 EP1259667 B1 EP 1259667B1 EP 01910230 A EP01910230 A EP 01910230A EP 01910230 A EP01910230 A EP 01910230A EP 1259667 B1 EP1259667 B1 EP 1259667B1
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EP
European Patent Office
Prior art keywords
yarn
time
shed
ideal
medium
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Expired - Lifetime
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EP01910230A
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English (en)
French (fr)
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EP1259667A1 (de
Inventor
Paul Gunneman
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Te Strake Textile BV
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Te Strake Textile BV
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3026—Air supply systems
    • D03D47/3053—Arrangements or lay out of air supply systems
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3026—Air supply systems
    • D03D47/3033—Controlling the air supply
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/12—Driving, starting, or stopping arrangements; Automatic stop motions for adjusting speed

Definitions

  • the present invention relates to a method for controlling a loom, comprising a weaving machine including a shed, through which a yarn is conveyed by means of at least one main weft yarn injector, to which a pressurized medium is supplied, wherein at least the time of arrival of the yarn at the end of the shed is detected, which time is then compared with a desired time, after which, in case of a difference between the detected time and the desired time, the medium supply to the main injector is adjusted so as to change the yarn velocity in the shed to such an extent that the detected time of arrival will correspond to the desired time.
  • the yarn is conveyed from the supply drum through the shed by means of a main injector.
  • Various natural phenomena such as variations in the transmission of the pulse from the medium to the yarn in the main injector and variations in the friction that the yarn encounters upon its flight through the shed, may cause the transport time of the yarn through the shed to vary considerably, resulting in variations in the time at which the yarn end reaches the end of the shed. as well as in variations in the velocity at which the yarn reaches the end of the shed.
  • Such variations in the arrival time have an adverse effect on the weaving process and on the quality of the product being woven, and consequently they need to be eliminated as much as possible.
  • US patent no. 4,446,893 discloses a loom which comprises a detector disposed at the end of the shed, which detects the arrival times of the yarn, averages said arrival times over a number of weft insertion cycles, and compares the average arrival time thus obtained with a desired arrival time. In case of a difference between the detected average arrival time and the desired arrival time, the pressure of the medium supplied to the main injector is adjusted to the effect that the starting velocity for the yarn in a next weft insertion will be such that the associated arrival time will correspond to the desired arrival time. With this prior art loom, adjustments are not made until a number of weft insertions have taken place.
  • the loom disclosed in the aforesaid US patent no. 4,722.370 includes not only a detector for detecting the arrival time at the end of the shed, but also a detector which detects the velocity, or the time of arrival, at a position located at the beginning of the shed. With this latter detector the yarn velocity is measured during an initial phase of the weft insertion already, and if said velocity is different from the desired velocity, the supply of medium to the main injector is adjusted to such an extent that the velocity is adjusted during the weft insertion already, in such a manner that the yarn end will arrive at the desired point in time.
  • the yarn end will indeed reach the end of the shed at a desired point in time, but the velocity at which the yarn end reaches the end of the shed may be entirely different, or even be much higher than desirable.
  • the velocity of the yarn upon arrival at the end of the shed. and even some time before that, must be as low as is possible under the prevailing conditions. Furthermore. said velocity upon arrival must be as reproducible as possible, that is, exhibit little variation.
  • a low and reproducible velocity upon arrival is advantageous, not only in order to prevent tension peaks, but also in connection with the braking process to which the yarn is subjected at the end of the weft insertion.
  • the object of the invention is to provide a method for controlling a loom, wherein the yarn arrives at the end of the shed at a desired. reproducible point in time and at a low velocity.
  • the method according to the invention is characterized in that the ideal time of arrival of the yarn end at the end of the shed is determined on the basis of the number of revolutions of the loom.
  • the ideal time of arrival of the yarn end at the end of the shed is thus determined first. Said time will practically correspond to the point in time at which the loom closes the shed. At that point in time, the weft yarn must have arrived at the end of the shed. If the weft yarn arrives late, it will not extend through the entire shed yet. resulting in a weaving flaw. In itself. early arrival is not a very serious problem, but it implies that the yarn velocity upon arrival was too high. As already said before, the ideal arrival time must practically coincide with the moment the shed closes, but in view of the inevitable, small variation in arrival times that takes place over several weft insertions, the ideal arrival time will be at a point slightly before the shed closes.
  • the ideal medium pulse transmitted to the yarn via the main injector during the initial phase of the weft insertion is determined in such a manner that the desired ideal arrival time in combination with an ideal low velocity is achieved with said ideal medium pulse.
  • said ideal medium pulse can be calculated theoretically per se, said ideal medium pulse is according to another embodiment of the method according to the invention determined in an iterative process.
  • the above-described process for determining the ideal medium pul se can also be carried out in such a manner that initially a low medium pulse is used, after which, through adjustment of the height and/or the duration of the pulse, a situation is reached wherein the yarn end reaches the end of the shed at the correct time again, whilst the variation remains small.
  • the arrival times measured at the aforesaid positions are compared with the previously determined ideal arrival times for said positions with each next weft insertion during the weaving process, after which, upon detection of a difference between the measured times and the ideal times, the medium pulse transmitted to the yarn in the main injector is changed in such a manner that the detected difference is eliminated.
  • the detected difference can be such that the detected times are later than the ideal times. This means, therefore, that the velocity of the yarn is too low. In order to correct this, the velocity of the yarn end must be increased. This can only be done by transmitting an additional medium pulse to the yarn end at the position where the yarn end is located, using an additional injector. This makes the construction more complicated, therefore.
  • another advantageous embodiment is characterized in that the medium pulse transmitted to the medium in the main injector during an initial phase of the weft insertion is selected so that said pulse is larger than the ideal medium pulse, after which, if a difference between the measured yarn velocity and the ideal yarn velocity is detected, the medium pulse transmitted to the yarn is reduced by reducing the time during which the medium is supplied to the injector and/or by reducing the pressure at which the medium is being supplied.
  • the medium pulse that is initially transmitted to the yarn has a value higher than that which is associated with the ideal medium pulse. As a consequence of this, the initial velocity of the yarn will be higher than the ideal velocity. As a result, the yarn end will reach specific positions in the shed sooner than prescribed by the ideal position-time diagram.
  • the points in time at which the yarn end reaches specific positions in the shed can be detected. for example. by means of sensors which are disposed in the shed. Furthermore it is possible to detect specific measured yarn lengths that pass already before the yarn enters the injector, and to derive therefrom the current position of the yarn end in the shed.
  • the loom comprises a yarn-preparing device with a supply drum, on which a number of windings can be wound and from which said windings can be unwound again in order to be supplied to the loom
  • a winding meter which detects the windings being unwound
  • determines on the basis thereof the point in time at which each winding leaves the drum after which the position of the yarn end in the shed
  • Figure 1 schematically shows a loom according to the invention.
  • Figure 2 shows an example of a position-time diagram in accordance with which a yarn is conveyed through the shed of a loom.
  • numeral 1 schematically indicates the shed of a loom.
  • Numeral 2 indicates a main injector, to one side of which a weft yarn 3 is supplied, whilst a pressurized medium can be supplied to another side of said main injector via line 4.
  • Weft yarn 3 is unwound from a drum 5 of a yarn-preparing device. onto which a number of windings 6 can be wound.
  • a winding meter 7 is furthermore present on drum 5, which winding meter detects the windings as they leave drum 5.
  • a brake device 8 (schematically indicated) is provided for braking the yarn when the yarn reaches the final part of the shed.
  • Winding meter 7 is connected, via a signal line 9, to an electronic device 10, to which the winding meter 7 feeds a signal representative of the time at which the windings 6 leave the drum.
  • Supply line 4 for the supply of a medium to the main injector 2 is connected, via suitable lines, to valves 11 and 12, and possibly to a number of further valves 13, 14, etc.
  • Valves 11 - 14 are in turn connected to reduction valves 11' - 14', which connect to a main supply line 15 for supplying a pressurized medium.
  • At least one of the valves 11 - 14 will be open during operation of the device, at least during an initial phase of the weft insertion. and supply a pressurized medium to main injector 4, as a result of which yarn 3 will be pulled off the drum 5 and be conveyed through the shed 1.
  • winding meter 7 which transmits a signal 9 representative of the time each winding leaves the drum to the electronic device 10.
  • Each winding that is unwound represents a specific yarn length, so that the position in the shed of the leading end of the yarn is known each time a winding is being unwound. This is represented on the horizontal axis of the position-time diagram of Figure 2. wherein it has been assumed that in this case eight windings are required for bridging the shed over its entire length.
  • a medium under high pressure is fed into main pressure line 15 by means not shown.
  • Said medium is supplied to valves 11 and 12 via reduction valves 11' and 12', wherein a specific pressure P1 is adjusted in valve 11 and a lower pressure P2 is adjusted in valve 12.
  • P1 a specific pressure
  • P2 a lower pressure
  • the ideal point in time at which the yarn end is to arrive at the end of the shed 1 is first determined in a preparatory phase. Ideally, said point in time coincides with the point in time at which the shed closes. Said point in time is indicated by numeral 8 in Figure 2. Then a medium pulse is supplied to injector 2 by means of valves 11 - 14, as a result of which a weft yarn is supplied to the shed and detection of the time at which the yarn end has reached the end of the shed takes place.
  • the medium pulse will be varied by means of valves 11 - 14, until a situation is reached wherein the yarn reaches the end of the shed at time 8. In this situation the yarn will move through the shed at exactly that velocity, so that the yarn will move through the entire shed during the time that is available between the start and the end of the weft insertion. In that situation, the ideal position-time diagram, the full line in Figure 2, can be determined. In this manner also the ideal times at which the yarn must have reached positions 1 - 8 (represented on the horizontal axis of Figure 2) can be determined. During the weaving process, the times at which the yarn end has reached said positions 1 - 8 during a weft insertion are can be compared with the ideal times as represented by the points on the ideal (full) line.
  • the times at which the yarn end has reached the various positions are obtained from winding meter 7.
  • Said winding meter counts the successive windings and also detects the time at which each winding is unwound.
  • Each winding that leaves the drum represents a specific yarn length, so that the exact location of the front yarn end in the shed is exactly known, for example at position 1 after the first winding, at position 2 after the second winding, etc. Since also the time at which each winding is unwound is recorded. said unwinding times also correspond to arrival time at position 1. 2 etc.
  • These data are supplied. via signal line 9, to electronic device 10, which registers said data and which compares the current times of arrival at locations 1, 2 etc. to the ideal times of arrival that follow from the ideal position-time diagram of Figure 2.
  • a medium pulse is supplied to injector 2 via valve 11, which pulse is larger than the medium pulse that is required for supplying a yarn at the ideal velocity.
  • the starting velocity of the yarn will be too high, as a consequence of which the yarn will follow line 8" in Figure 2, at least during the initial phase.
  • the medium pulse to injector 2 is reduced, either by closing valve 11 sooner or by reducing the pressure of the medium being supplied, for example by closing valve 11 and opening valve 12 at a lower pressure. In this way the yarn velocity is reduced and said velocity will no longer follow line 8'', but line 8, which is the ideal line.
  • a comparison between the current arrival times and the ideal times can be made at several positions or at all positions. and in case of a difference the supply of medium to the injector can be adjusted directly. In this manner it is ensured that the yarn will arrive at the end of the shed in accordance with the ideal position time diagram and at the correct time at all times. Not only will the time of arrival be the same at all times, but also the velocity upon arrival will be ideally low, taking into account small differences, of course, which can always occur due to natural causes.
  • a winding meter for detecting the arrival times of the yarn at specific positions in the shed
  • one or more sensors disposed before the main injector which detect specific measured yarn lengths that pass. from which information the times of arrival of the yarn end at specific positions in the shed can be derived in the same manner as is done by means of a winding meter.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (8)

  1. Kontrollverfahren für eine Webvorrichtung, welche eine Webmaschine mit einem Fach (1) umfasst, durch welches ein Garn (3) mittels mindestens eines Haupteinschußgarninjektors (2) übertragen wird, welchem ein unter Druck stehendes Medium zugeführt wird, wobei mindestens die Ankunftszeit des Garns (3) an dem Ende des Faches (1) erfaßt wird, wobei die Zeit dann mit einer angestrebten Zeit verglichen wird, wobei danach für den Fall eines Unterschieds zwischen der erfaßten Zeit und der angestrebten Zeit das dem Hauptinjektor (2) zugeführte Medium derart eingestellt wird, daß die Garngeschwindigkeit in dem Fach (1) in einem Umfang derart verändert wird, daß die erfaßte Ankunftszeit der angestrebten Zeit entspricht, dadurch gekennzeichnet, dass die ideale Ankunftszeit des Garnendes an dem Ende des Faches (1) auf der Basis der Anzahl von Umdrehungen des Webautomats bestimmt wird, wobei danach am Anfang des W'432ebverfahrens der ideale Mediumpuls, welcher auf das Garn (3) mittels des Hauptinjektors (2) während der Anfangsphase der Garneinführung übertragen wird, in einer Weise bestimmt wird, daß das Garnende das Ende des Faches mit einer bestimmten idealen Geschwindigkeit zu dem idealen Zeitpunkt erreicht;
    wobei eine Erfassung der idealen Ankunftszeiten, welche einer Anzahl von Positionen in dem Fach (1) zugeordnet sind, an den Positionen stattfindet, von welchen ein ideales Positionszeitdiagramm für das Garn, welches durch das Fach (1) übertragen wird, abgeleitet wird;
    wobei danach die Ankunftszeit des Garnendes an den verschiedenen Positionen bei jedem Garneinschuss während des Webverfahrens erfasst wird, wobei die Zeit dann mit den idealen Ankunftszeiten, welche den vorher bestimmten Positionen zugeordnet sind, verglichen wird;
    wobei danach, wenn ein Unterschied zwischen den gemessenen Zeiten und den idealen Zeiten erfasst wird, der Mediumpuls, welcher auf das Garn (3) in dem Hauptinjektor (2) übertragen wird, derart angepaßt wird, daß die gemessenen Unterschiede vollständig oder teilweise beseitigt werden.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der ideale Mediumpuls in einem iterativen Verfahren bestimmt wird, wobei durch einen Beginn mit einem abhängig van einer Stärke des Garns (3) höchstmöglichen Mediumpuls versucht wird, eine Pulsdauer zu bestimmen, mit welcher das Garn im Mittel zu dem idealen Zeitpunkt ankommt, wobei danach die Veränderung bei den Ankunftszeiten erfasst wird und, wenn eine Veränderung größer als erstrebenswert ist, die Pulshöhe verringert und die Pulsdauer verlängert wird, bis das Garn im Mittel wieder zu dem idealen Zeitpunkt ankommt, wobei danach die Veränderung der Ankunftszeiten wiederum bestimmt wird, wobei das Verfahren fortläuft, bis eine Kombination einer Pulshöhe und einer Pulsdauer gefunden wird, bei welcher das Garn zu der idealen Zeit ruit einem angestrebten kleinen Abweichungsausmaß ankommt.
  3. Verfahren nach Anspruch 1 ader 2, dadurch gekennzeichnet, daß der Mediumpuls, welcher während einer Anfangsphase der Einschußeinführung zu dem Medium in dem Hauptinjektor (2) übertragen wird, derart ausgewählt wird, daß der Puls größer als der ideale Mediumpuls ist, wobei danach, wenn ein Unterschied zwischen der gemessenen Garngeschwindigkeit und der idealen Garngeschwindigkeit erfaßt wird, der auf das Garn (3) übertragene Mediumpuls verringert wird, indem die Dauer, während welcher das Medium dem Injektor (2) zugeführt wird, und/oder indem der Druck, mit welchem das Medium zugeführt wird, verringert wird.
  4. Verfahren nach Anspruch 1, 2 ader 3, dadurch gekennzeichnet, daß eine Erfassung der Zeiten, zu welchen das Garnende bestimmte Positionen in dem Fach erreicht hat, erfolgt, indem bestimmte gemessene Garnlängen erfasst werden, welche, bever das Garn (3) in den Injektor eintritt, passieren und um davon Zeitpunkte abzuleiten, an welchen das Garnende aufeinander folgende Positionen in dem Fach (1) erreicht hat.
  5. Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass ein Erfassen der Zeiten, zu welchen das Garnende bestimmte Positionen in dem Fach (1) erreicht hat, mittels eines Wicklungsmessers (7) erfolgt, welcher die Anzahl der abgewickelten Wicklungen zählt und welcher den Zeitpunkt bestimmt, zu welchem die Wicklung die Trommel verlässt, wovon eine Information über die Zeitpunkte, zu denen das Garnende aufeinander folgende Positionen in dem Fach erreicht hat, abgeleitet wird.
  6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Zeiten, zu welchen das Garnende bestimmte Positionen in dem Fach (1) erreicht hat, über eine Anzahl van Einschusseinführungen gemittelt werden und die gemittelten erfassten Zeiten für jede Position mit der idealen Zeit verglichen werden, wobei danach die Zuführung des Mediums zu dem Injektor auf der Basis dieses Unterschieds zwischen den erfassten Zeiten und den idealen Zeiten eingestellt wird.
  7. Webvorrichtung, welche zum Ausführen des Verfahrens gemäß einem der vorhergehenden Ansprüche geeignet ist, umfassend eine Webmaschine mit einem Fach (1), durch welches das Garn (3) mittels mindestens eines Haupteinschußfadeninjektors (2) übertragen wird, welchem ein unter Druck stehendes Medium zugeführt wird, wobei Mittel, um mindestens die Ankunfts zeit des Garns an dem Ende des Faches (1) zu erfassen, und Mittel, um die Zeit mit einer angestrebten Zeit zu vergleichen, vorhanden sind, und wobei im Fall eines Unterschieds zwischen den zwei Zeiten ein Signal zu der Einheit abgegeben wird, welche das Medium dem Injektor zuführt,
    dadurch gekennzeichnet, dass die Mittel, um die Ankunftszeit des Garns an bestimmten Positionen in dem Fach zu erfassen, van mindestens einem vor dem Hauptinjektor angeordneten Sensor (7) gebildet werden, welcher bestimmte gemessene Garnlängen, welche passieren, erfasst und zählt, und welcher ein Signal an eine elektronische Vorrichtung (10) ausgibt, welche die Garnlängen zählt, welche passiert haben, und die Zeit erfasst, zu welcher dies stattfand, wobei die elektronische Vorrichtung (10) Mittel aufweist, um die Zeit eines Durchgangs der letzten Garnlänge mit einer idealen Zeit davon zu vergleichen, wobei die Mittel ein Signal an die Einheit ausgeben, welche das Medium dem Injektor (2) zuführt, wenn ein Unterschied zwischen den zwei Zeiten auftritt, woraufhin als Folge die Zuführung des Mediums eingestellt wird.
  8. Webvorrichtung nach Anspruch 7, umfassend eine Garnanfertigungsvorrichtung mit einer Zuführtrommel (5), auf welcher eine Anzahl von Wicklungen aufgewickelt werden können, wobei die Wicklungen von der Trommel abgewickelt werden können, um zu dem Fach (1) des Webautomaten übertragen zu werden, dadurch gekennzeichnet, dass die Mittel, um die Ankunftszeit des Garns (3) an bestimmten Positionen in dem Fach (1) zu ertassen, von einem Wicklungsmesser gebildet werden, welcher die Wicklungen erfasst, welche die Trommel verlassen, und welcher ein Signal an eine elektronische Vorrichtung (10) ausgibt, welche die abgewickelten Wicklungen zählt und die Zeit erfasst, zu welcher jede Wicklung die Trommel (5) verlässt, wobei die elektronische Vorrichtung (10) Mittel aufweist, um die Zeit, zu welcher die letzte Wicklung die Trommel verlässt, mit einer idealen Zeit davon zu vergleichen, wobei die Mittel für den Fall eines Unterschieds zwischen den zwei Zeiten ein Signal an die Einheit abgegeben, welche das Medium dem Injektor (2) zuführt, wobei als Folge davon die Zuführung des Mediums eingestellt wird.
EP01910230A 2000-03-02 2001-02-09 Kontrollverfahren für eine webvorrichtung und webvorrichtung zur durchführung dieses verfahrens Expired - Lifetime EP1259667B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1014537A NL1014537C2 (nl) 2000-03-02 2000-03-02 Werkwijze voor het regelen van een weefinrichting, alsmede een weefinrichting voor het uitvoeren van deze werkwijze.
NL1014537 2000-03-02
PCT/NL2001/000111 WO2001064986A1 (en) 2000-03-02 2001-02-09 Method for controlling a weaving device and weaving device for performing said method

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EP1259667A1 EP1259667A1 (de) 2002-11-27
EP1259667B1 true EP1259667B1 (de) 2004-11-17

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EP (1) EP1259667B1 (de)
JP (1) JP2003525360A (de)
CN (1) CN1261631C (de)
AU (1) AU2001237808A1 (de)
DE (1) DE60107210T2 (de)
NL (1) NL1014537C2 (de)
WO (1) WO2001064986A1 (de)

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ITMI20070918A1 (it) * 2007-05-07 2007-08-06 Promatech Spa Metodo automatico di controllo della velocita' di lavorazione di un telaio di tessitura al fine di ottimizzare la produttivita'.
JP5423597B2 (ja) * 2010-06-28 2014-02-19 株式会社豊田自動織機 ジェットルームにおける緯入れ状態判別装置及び緯入れ制御装置
CN103147212B (zh) * 2013-03-13 2014-06-04 浙江理工大学 一种喷气织机引纬速度自动控制系统及其调节方法
CN103866476A (zh) * 2014-02-24 2014-06-18 江苏宋和宋智能科技有限公司 一种独立供气装置及使用方法
CN107881750B (zh) * 2017-11-14 2023-03-14 广东溢达纺织有限公司 领袖长度监测方法及装置

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NL7908357A (nl) * 1979-11-15 1981-06-16 Rueti Te Strake Bv Werkwijze voor het met behulp van een stromend medium transporteren van een inslagdraad door het weefvak bij een weefmachine, alsmede weefmachine, ingericht voor het toepassen van deze werkwijze.
NL8203808A (nl) * 1982-09-30 1984-04-16 Rueti Te Strake Bv Werkwijze voor het met behulp van een stromend medium transporteren van een inslagdraad door het weefvak bij een spoelloze weefmachine, alsmede weefmachine, ingericht voor het toepassen van deze werkwijze.
JPH0819604B2 (ja) * 1986-01-13 1996-02-28 津田駒工業株式会社 流体噴射式織機のよこ入れ自己診断装置

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WO2001064986A1 (en) 2001-09-07
CN1261631C (zh) 2006-06-28
EP1259667A1 (de) 2002-11-27
DE60107210D1 (de) 2004-12-23
DE60107210T2 (de) 2005-12-01
JP2003525360A (ja) 2003-08-26
NL1014537C2 (nl) 2001-09-04
CN1406294A (zh) 2003-03-26
AU2001237808A1 (en) 2001-09-12

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