WO2003029538A2 - Dispositif de fausse torsion par friction et procede de fonctionnement d'un dispositif de fausse torsion par friction - Google Patents

Dispositif de fausse torsion par friction et procede de fonctionnement d'un dispositif de fausse torsion par friction Download PDF

Info

Publication number
WO2003029538A2
WO2003029538A2 PCT/EP2002/010566 EP0210566W WO03029538A2 WO 2003029538 A2 WO2003029538 A2 WO 2003029538A2 EP 0210566 W EP0210566 W EP 0210566W WO 03029538 A2 WO03029538 A2 WO 03029538A2
Authority
WO
WIPO (PCT)
Prior art keywords
speed
false twist
friction
signal
friction false
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.)
Ceased
Application number
PCT/EP2002/010566
Other languages
German (de)
English (en)
Other versions
WO2003029538A3 (fr
Inventor
Reinhard Lieber
Michael Klug
Thomas Wortmann
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.)
Oerlikon Textile GmbH and Co KG
Oerlikon Barmag AG
Original Assignee
Barmag AG
Saurer GmbH and Co KG
Barmag Barmer Maschinenfabrik 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 Barmag AG, Saurer GmbH and Co KG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Priority to EP02800101A priority Critical patent/EP1430171A2/fr
Publication of WO2003029538A2 publication Critical patent/WO2003029538A2/fr
Publication of WO2003029538A3 publication Critical patent/WO2003029538A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/24—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles
    • D01H1/244—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles each spindle driven by an electric motor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/06—Spindles
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc

Definitions

  • the invention relates to a friction false twist device according to the preamble of claim 1 and a method for operating the friction false twist device.
  • a friction false twist device includes friction false twist units, as are known, for example, from EP 0 744 480, and their power supply.
  • the well-known friction false twist unit for false twist texturing of synthetic threads contains a friction agent with stacks of overlapping disks rotating in the same direction, which are arranged on shafts arranged in parallel in the corner points of an equilateral triangle and on which a twist due to the gussets formed between the disks by rotation Thread is exercised.
  • the three rotatably mounted stacks of friction disks are coupled to one another via a belt or the like in such a way that the stacks of friction disks rotate in the same direction and at the same speed.
  • the drive takes place via an electric motor drive assigned to the friction means and connected to the friction disk stacks.
  • an asynchronous motor is used for this purpose, which is operated together with the motors of other friction false twist units on a common controllable power supply, usually a converter.
  • each motor must have its own protective device that protects the electrical system against both short-term overcurrents and long-term overloading.
  • a fusible link and a bimetallic fuse are used for each false friction swirl unit. In terms of a safer false twist texturing process and a documented, uniformly good quality of the thread, the exclusive protection of the unit against damage is not sufficient.
  • the friction false twist assemblies contained in the friction false twist device have a speed sensor connected to the drive or to the friction means, so that a continuous evaluation of the signal of the speed sensor is possible.
  • the advantage of the invention is that both suddenly occurring and continuously emerging disturbances can be easily detected.
  • the invention takes advantage of the fact that the electric motors that are possible for a friction false twist unit have a falling speed-torque characteristic. If a friction false twist unit is now loaded with an additional braking torque due to a malfunction, this is noticeable by a decrease in the speed, which can easily be detected by a speed sensor.
  • the signal of the speed sensor is passed on to the outside for the purpose of external further processing, without it being evaluated within the friction false twist unit in terms of regulation, control or monitoring.
  • the speed sensor in conjunction with an asynchronous motor, since there is a defined relationship between the load torque and the slip, the slip being easily derived from the field frequency and the measured speed can be determined.
  • direct current motors or synchronous motors are also suitable for driving the friction means. Driven, overlapping friction disk stacks or friction belts or combinations of friction disks and friction belts can be used as the friction means.
  • a speed sensor for example, a sensor operating on the tachogenerator principle or similar is conceivable, which emits an analog measurement signal that is essentially proportional to the speed.
  • the speed sensor emits a fixed number of pulses per revolution of the drive or, for example, the friction disk stack. These pulse sequences can be read in and processed further very simply and precisely by digital signal processing devices.
  • the evaluation is particularly simple when the speed sensor generates the same number of pulses per motor revolution as the motor has pole pairs.
  • a characteristic value proportional to the slip can be formed by simply forming a difference between the sensor pulse frequency and the converter frequency.
  • the monitoring of the rotational speed in the friction false twist units is realized particularly simply and economically if the signals of the speed sensors of a plurality of friction false twist units are evaluated jointly by an evaluation device.
  • the speed sensors are particularly advantageously connected to the evaluation device via a local fieldbus system when carrying out the electrical installation.
  • the speed sensor can also advantageously be used directly with the friction disk stack or with assign shafts connected to the friction disk stacks.
  • the rotational speed or a value derived from the rotational speed, such as the slip is continuously monitored. Continuous monitoring does not mean that this has to be done continuously. Rather, it makes economic sense to query and monitor these cyclically one after the other when monitoring a large number of signals from the speed sensors.
  • the method detects that a characteristic value formed from the rotational speed, such as the slip, exceeds a limit value by a predetermined amount of deviation, the method assumes a malfunction due to stiffness or blockage and switches off the frictional false twist unit concerned. This corresponds to the motor protection by a fuse.
  • a further development of the method additionally monitors for tighter limit values taking into account the duration and the amount of the exceedance.
  • the drive can be effectively protected against overheating with less stiffness.
  • a sensible monitoring strategy is based on the fact that the motor overtemperature results from the power loss minus a cooling capacity multiplied by the duration of the overload. If the characteristic value lies above a threshold value, the difference between the characteristic value and the threshold value can be calculated as an integral by integrating or adding up the excess amount over time, and an error can be identified by comparing the integral thus obtained with a limit value.
  • the historical development of the speed characteristic value is used for monitoring.
  • a slip that increases steadily in a short time can indicate, for example, a thread winder forming around a friction disc stack.
  • An increasing slip over a longer period of time can be caused, for example, by bearing damage in the friction false twist unit.
  • the method responds accordingly by generating an error signal.
  • the method uses different reactions depending on the type of error signal.
  • the drive of the friction false twist unit concerned must be stopped immediately. This applies if the slip exceeds a high threshold value for a short time or a low threshold value over a longer period.
  • the unit In the case of a thread winder forming around a friction disc stack, the unit must also be stopped.
  • the error signals or characteristic values formed from the error signals are stored and taken into account in a quality assessment of the yarn. For example, a yarn in which one of the above-mentioned errors occurred during further processing is downgraded to the quality level. This also applies to errors in which the friction false twist unit has not been switched off.
  • the speed values of all the friction counter-rotation units that are collectively driven in the friction false-twist device by a converter are averaged and fed to the converter in the sense of a regulation.
  • Fig. 4 shows the time course of the speed parameter in another fault.
  • FIG. 1 shows a friction false twist unit of the friction false twist device according to the invention.
  • the friction swirl unit 1 has a friction medium consisting of a plurality of friction disc stacks 2.2 and a plurality of shafts 2.1 connected to the friction disc stack.
  • the thread not shown here, is passed through the gusset formed between the disks 3 mounted on the friction disk stacks 2.2 and twisted through the peripheral surfaces of the disks 3 rotating in the same direction and at the same speed.
  • the axes of the friction disc stacks 2.2 span a prism with an equilateral triangle as the base.
  • the friction disk stacks 2.2 are rotatably mounted on the shafts 2.1 in the bearing block 4.
  • the shafts 2.1 driving the friction disk stacks 2.2 protrude and are connected to one another by a belt drive 5 in such a way that the friction disk stacks 2.2 rotate in the same direction and at the same speed.
  • one of the shafts 2.1 is connected to a further belt drive 6, which connects the shaft to an electric motor 7. The interaction of the two belt drives 5 and 6 causes the electric motor 7 to drive all of the friction disk stacks 2.2.
  • the invention is not limited to a connection of the shafts 2.1 by means of belt drives.
  • Other transmission techniques are known to the person skilled in the art and can likewise be used in the sense of the invention.
  • Other friction means such as friction belt drives can also be used. '
  • the voltage supply line 8 connects the electric motor 7 to a controllable voltage source, not shown here, preferably to a converter.
  • asynchronous motor is preferably considered as a motor, but other electric motors, for example direct current motors or synchronous motors, are also conceivable.
  • a speed sensor 10 is installed on the shaft of the electric motor 7. Also conceivable and in the sense of the invention is an installation of the speed sensor 10 in the area of the friction medium, for example the friction disk stack 2.2, as shown in FIG. 1 as an alternative with a broken line.
  • the speed sensor could also be installed on one of the shafts 2.1 or by coupling it into its own pulley on one of the belt drives 5 or 6.
  • the speed sensor 10 supplies either a signal proportional to the speed or a pulse train which is proportional to the speed. This is advantageous if an asynchronous motor is used. This is particularly the case when the speed-frequency ratio of the sensor matches that of the motor.
  • the signal that is present on the signal line 11 is either an analog voltage or current signal that is proportional to the speed or one that is proportional to the speed. proportional frequency.
  • the speed sensor 10 contains a conversion module for a local area network. In this case, the signal line 11 is the connection to the next network connection.
  • FIG. 2 schematically shows a friction false twist device according to the invention with several friction false twist units 1.
  • a controllable voltage supply in this example a converter 13, generates a supply voltage which determines the speed of the friction false twist units and is output via the voltage supply network 12.
  • Each of the friction false twist units 1 is connected with its voltage supply line 8 to the voltage supply network 12.
  • the signal line 11 of the friction false twist units are either connected in a star shape to a speed signal evaluation 16. In the case of a large number of friction false twist units 1, a high amount of wiring is to be expected. In this case, it is advantageous if a network connection is used for the signal lines 11, so that the signal lines 11 only have to be coupled into the signal line network 15 at a branch 14.
  • the signal line network 15 passes the speed signals to a speed signal evaluation 16.
  • the individual speed signals are evaluated either by continuously monitoring all speed signals simultaneously or by cyclically querying and evaluating the individual speed values.
  • the measured speed can be converted into a slip value.
  • the result of the speed signal evaluation 16 can, for example, result in one of the friction false twist units 1 being switched off.
  • the fault shutdown monitoring 17 outputs a signal on the shutdown signal network 19.
  • signal line network 15 for the speed signal it can also be either a star-shaped connection or a local network.
  • the switch-off signal line 21 is fed to a switch-off device 18, which the respective friction false twist unit 1 switches off in the event of a fault.
  • the signal line network 15 for the speed signals and the shutdown signal network 19 in the case of a realization as a local network, it makes sense to physically provide both networks on a common network.
  • the result of the speed signal evaluation 16 can also lead, for example, to a message for the operator being output on a fault detector 22.
  • the fault detector 22 can be arranged both centrally and decentrally. Thanks to an integrated display, the malfunction indicator can also provide special operating instructions, such as an indication of contamination of one of the friction false twist units 1.
  • the averaging of all speed signals is also integrated in the speed signal evaluation 16. It is self-evident for the person skilled in the art that speed signals recognized as having a fault are not used for averaging.
  • the speed average value determined in this way is fed to the converter 13, in which case it is assumed that it is a converter with an integrated controller.
  • the current output by the converter 13 via the voltage supply network is adapted in such a way that the speed average value corresponds to a predetermined setpoint.
  • the idling speed should be used here instead of the rotating field frequency.
  • the course of the slip signal 24.1 increases due to a defect.
  • the Limit value 25 is stored in the speed signal evaluation 16 in FIG. 2 and represents the load limit of a drive for short-term overloads.
  • a signal is triggered which is forwarded to the fault shutdown monitoring 17 in FIG. 2, where the shutdown signal network is used 19, a switch-off signal is sent to the switch-off device 18 which is associated with the friction-triggering swirl unit 1 which triggers the fault and which switches off the friction-counter-swirl unit in question.
  • a fault message can be displayed on the fault detector 22 in FIG. 2.
  • the course of the slip signal 24.2 exceeds a threshold value 26, which is set as a limit value for permanent overloads.
  • the amount by which the slip signal exceeds the threshold of the limit value violation 26 is integrated into the integrated limit value violation 27.
  • the integral is shown in FIG. 3 as a surface under the slip signal 24.2.
  • the friction false twist unit 1 in question is switched off, as explained above.
  • the monitoring described here makes use of the knowledge that there is a constant relationship between slip, torque and power loss. The conversion of the power loss causes the drive to heat up so that the shutdown prevents overheating.
  • Figure 4 shows two further monitoring points. Two curves of the slip signal 24.3 and 24.4 are shown in the upper area. The lower area shows the time derivative of the slip signals 29 and 31. The slip signal 24.3 has a slow rise, the derivative 29 of which falls within a limit area 30. This limit area 30 is selected such that slowly increasing slip signals, such as those that occur in the event of bearing damage, can be detected. In this case, the malfunction with the possible cause is reported to the operator via the malfunction indicator 22 shown in FIG.
  • the slip signal 24.4 has a rapid rise, the derivative 31 of which falls into a higher limit area 32.
  • This limit area 32 is selected such that for example, thread winder forming around the friction false twist unit 1 can be detected. In this situation, the friction false twist unit 1 in question must be switched off in the manner described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

L'invention concerne un dispositif de fausse torsion par friction permettant de texturer par fausse torsion des fils synthétiques ainsi qu'un procédé de fonctionnement dudit dispositif de fausse torsion par friction. Ce dispositif de fausse torsion par friction comprend au moins une unité de fausse torsion par friction équipée d'un entraînement par moteur électrique séparé, alimenté par un système d'alimentation en énergie électrique réglable commun, lequel entraînement sert à entraîner un moyen de friction. Selon la présente invention, la vitesse de rotation du moteur électrique ou du moyen de friction est captée par un capteur de vitesse. Le signal de mesure de ce capteur de vitesse, intégré dans l'unité de fausse torsion par friction, est acheminé vers l'extérieur jusqu'à un dispositif d'évaluation externe. La vitesse de rotation de chaque unité de fausse torsion par friction peut ainsi être évaluée et, en cas de trop forte baisse de régime, seule l'unité de fausse torsion par friction concernée peut être arrêtée ou un message d'avertissement peut être transmis à l'opérateur. La surveillance des vitesses de rotation permet d'éviter des surcharges auxdites unités de fausse torsion par friction et de détecter des défauts, tels que des enroulements de fil ou des dégradations liées au stockage. En calculant la moyenne des valeurs de vitesse, la moyenne déterminée peut être entrée comme grandeur réglée dans des régulateurs de vitesse intégrés dans le système d'alimentation en énergie électrique réglable.
PCT/EP2002/010566 2001-09-27 2002-09-20 Dispositif de fausse torsion par friction et procede de fonctionnement d'un dispositif de fausse torsion par friction Ceased WO2003029538A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02800101A EP1430171A2 (fr) 2001-09-27 2002-09-20 Dispositif de fausse torsion par friction et procede de fonctionnement d'un dispositif de fausse torsion par friction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10147845.3 2001-09-27
DE10147845 2001-09-27

Publications (2)

Publication Number Publication Date
WO2003029538A2 true WO2003029538A2 (fr) 2003-04-10
WO2003029538A3 WO2003029538A3 (fr) 2003-11-27

Family

ID=7700610

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/010566 Ceased WO2003029538A2 (fr) 2001-09-27 2002-09-20 Dispositif de fausse torsion par friction et procede de fonctionnement d'un dispositif de fausse torsion par friction

Country Status (4)

Country Link
EP (1) EP1430171A2 (fr)
CN (1) CN1617959A (fr)
TW (1) TWM283852U (fr)
WO (1) WO2003029538A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1614781A1 (fr) * 2004-07-06 2006-01-11 Schärer Schweiter Mettler AG machine de fausse torsion
EP1526196A3 (fr) * 2003-10-20 2006-07-19 Maschinenfabrik Rieter Ag Dispositif de chauffage d' un fil
US7406818B2 (en) 2004-11-10 2008-08-05 Columbia Insurance Company Yarn manufacturing apparatus and method
CN102373517A (zh) * 2010-08-16 2012-03-14 德特勒夫·格根斯 包括电机、供电装置、变压器和控制装置的摩擦假捻机组
CN104153059A (zh) * 2014-07-15 2014-11-19 东华大学 一种纱条假捻分析装置
CN110273206A (zh) * 2018-03-16 2019-09-24 日本Tmt机械株式会社 假捻加工机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011080416A1 (de) * 2011-08-04 2013-02-07 Schaeffler Technologies AG & Co. KG Friktions-Motorspindel und Verfahren zum Betrieb
CN106647593A (zh) * 2017-02-22 2017-05-10 苏州普力玛智能电子有限公司 一种假捻丝的质量监测方法及系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS578221B2 (fr) * 1973-08-10 1982-02-15
DE4028093A1 (de) * 1989-09-09 1991-04-04 Barmag Barmer Maschf Friktions-falschdraller
JPH0726430A (ja) * 1993-07-12 1995-01-27 Murata Mach Ltd 仮撚機の制御方法
EP0744480B1 (fr) * 1995-05-23 1999-09-15 B a r m a g AG Dispositif de fausse torsion
DE10026942A1 (de) * 2000-05-30 2001-12-06 Barmag Barmer Maschf Verfahren zur Steuerung einer Texturiermaschine sowie eine Texturiermaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1526196A3 (fr) * 2003-10-20 2006-07-19 Maschinenfabrik Rieter Ag Dispositif de chauffage d' un fil
EP1614781A1 (fr) * 2004-07-06 2006-01-11 Schärer Schweiter Mettler AG machine de fausse torsion
US7406818B2 (en) 2004-11-10 2008-08-05 Columbia Insurance Company Yarn manufacturing apparatus and method
CN102373517A (zh) * 2010-08-16 2012-03-14 德特勒夫·格根斯 包括电机、供电装置、变压器和控制装置的摩擦假捻机组
CN104153059A (zh) * 2014-07-15 2014-11-19 东华大学 一种纱条假捻分析装置
CN110273206A (zh) * 2018-03-16 2019-09-24 日本Tmt机械株式会社 假捻加工机

Also Published As

Publication number Publication date
EP1430171A2 (fr) 2004-06-23
TWM283852U (en) 2005-12-21
WO2003029538A3 (fr) 2003-11-27
CN1617959A (zh) 2005-05-18

Similar Documents

Publication Publication Date Title
DE112017005650B4 (de) Kraftübertragungsmechanismus-anomalie-diagnoseeinrichtung und kraftübertragungsmechanismus-anomalie-diagnoseverfahren
EP1280249B1 (fr) Dispositif de protection et de surveillance d'un générateur et utilisation d'un tel dispositif
DE2409882B2 (de) Vorrichtung zum erkennen des fehlerhaften arbeitens von spinnmaschinen
DE102008012957A1 (de) Verfahren zum Betreiben einer Windenergieanlage und Windenergieanlage
EP0660972B1 (fr) Procede et dispositif de surveillance electronique de surcharge sur des commandes a moteur electrique
EP1430171A2 (fr) Dispositif de fausse torsion par friction et procede de fonctionnement d'un dispositif de fausse torsion par friction
EP2804826A1 (fr) Surveillance de la vitesse de déplacement d'une bande de matière
EP3260584B1 (fr) Procédé destiné à optimiser la production d'une machine à filer à bout libre
DE3412060A1 (de) Einrichtung zum betreiben einer spinnerei- oder zwirnereimaschine
DE4330537B4 (de) Frequenzumrichter und Verfahren zu seinem Betrieb
DE102010019774B4 (de) Steuervorrichtung und Steuerverfahren für Walzanlage
DE3315247A1 (de) Spinnmaschine
EP3575457B1 (fr) Procédé de détermination des états de fonctionnement d'une machine textile ainsi que machine textile
EP0979793B1 (fr) Méthode pour arrêter un moteur électrique et circuit pour le freiner
EP1510498B1 (fr) Procédé de surveillance d' un palan à chaine et palan à chaine
DE4404243B4 (de) Verfahren und Einrichtung zum Betreiben einer Offenend-Rotorspinneinheit mit einzelmotorischem elektrischem Antrieb des Spinnrotors
EP0332568A1 (fr) Procédé de travail et circuit de commande pour surveiller le démarrage de moteurs électriques à haute tension avec démarrage asynchrone
EP0105077B1 (fr) Dispositif de protection pour moteurs asynchrones
EP3219986B1 (fr) Éolienne comprenant un module de contrôle de puissance
DE3906050C2 (fr)
DE19522933C1 (de) Antriebssystem für eine Spinnereimaschine, insbesondere Ringspinnmaschine
WO2018096028A1 (fr) Procédé de commande d'une éolienne
EP2273000B1 (fr) Poste de travail d'un métier à tisser à rotor à extrémité ouverte et procédé de fonctionnement du poste de travail
CH669406A5 (fr)
DE60204103T2 (de) Vorrichtung zur Detektion von Spiel zwischen Streckwerkrollen einer Spinnmaschine

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BY BZ CA CH CN CO CR CU CZ DE DM DZ EC EE ES FI GB GD GE GH HR HU ID IL IN IS JP KE KG KP KR LC LK LR LS LT LU LV MA MD MG MN MW MX MZ NO NZ OM PH PL PT RU SD SE SG SI SK SL TJ TM TN TR TZ UA UG US UZ VC VN YU ZA ZM

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ UG ZM ZW AM AZ BY KG KZ RU TJ TM AT BE BG CH CY CZ DK EE ES FI FR GB GR IE IT LU MC PT SE SK TR BF BJ CF CG CI GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 20028188748

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2002800101

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2002800101

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP