EP0906461A1 - Pince de transfert pour une machine a tisser a rapieres - Google Patents

Pince de transfert pour une machine a tisser a rapieres

Info

Publication number
EP0906461A1
EP0906461A1 EP97928158A EP97928158A EP0906461A1 EP 0906461 A1 EP0906461 A1 EP 0906461A1 EP 97928158 A EP97928158 A EP 97928158A EP 97928158 A EP97928158 A EP 97928158A EP 0906461 A1 EP0906461 A1 EP 0906461A1
Authority
EP
European Patent Office
Prior art keywords
gripper
encoder
positioning
guide
thread
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
EP97928158A
Other languages
German (de)
English (en)
Other versions
EP0906461B1 (fr
Inventor
Henry Shaw
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.)
Picanol NV
Original Assignee
Picanol NV
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=25663044&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0906461(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from BE9600520A external-priority patent/BE1010334A3/nl
Priority claimed from BE9700210A external-priority patent/BE1011038A6/nl
Application filed by Picanol NV filed Critical Picanol NV
Publication of EP0906461A1 publication Critical patent/EP0906461A1/fr
Application granted granted Critical
Publication of EP0906461B1 publication Critical patent/EP0906461B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers
    • D03D47/233—Carrying grippers
    • 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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters

Definitions

  • the invention relates to a donor gripper for a Greifer ⁇ weaving machine, which is provided with means for receiving and positioning a weft thread, which is held ready on a deflection guide.
  • a weft thread is usually passed through the shed with the aid of a donor rapier and a slave rapier.
  • the donor gripper picks up a weft thread on the insertion side of the shed, which is kept ready by means of a thread feeder.
  • the weft thread is picked up, positioned within the donor rapier and clamped by means of a clamp.
  • the weft thread is taken over by a slave gripper, clamped by a clamp of the slave gripper and brought to the other side of the shed by the slave gripper.
  • the encoder gripper moves back to its starting position in front of the entry page of the shed.
  • the invention is based on the object of designing a donor gripper of the type mentioned at the outset in such a way that a ready-made weft thread is securely gripped, but the risk of gripping a warp thread is substantially reduced.
  • the encoder gripper forms a hollow chamber which extends in the longitudinal direction and is open at the front and rear and on the side facing the deflecting guide and embraces the deflecting guide.
  • the donor gripper according to the invention can grasp a ready-made weft thread which, due to the deflection guide, has a course which differs significantly from a possible running direction of a warp thread. On the other hand, the risk that the donor gripper catches an incorrectly running warp thread is relatively low. In addition, there are no restrictions with regard to the dimensions of a weft thread to be picked up.
  • the means for receiving a weft thread are arranged in different walls of the hollow chamber. It is thereby achieved that the tension of the weft thread is gradually increased when it is carried along by the donor gripper, so that the risk of weft thread breaks is limited.
  • the means for positioning are arranged in two different walls of the hollow chamber and are opposite one another at a distance. This ensures that the donor gripper holds a piece of the weft free in its hollow chamber, so that it can be taken over very well by a slave gripper or also by a slave hook.
  • the means for receiving and / or the means for positioning in the direction of movement of the gripper are offset relative to one another with respect to the position of the weft thread provided. The result of this is that the tension of the weft thread is gradually increased when it is carried along by the donor gripper, so that the risk of weft thread breaks is further limited.
  • the means for positioning which is assigned to the edge of the fabric of a fabric to be woven, is assigned as a means for receiving a tab which projects inwards into the donor gripper and forms a guide surface leading to the means for positioning .
  • the side of the donor gripper facing the fabric edge of a fabric to be weaved is more at risk with regard to an unwanted pick-up of a warp thread. Since the means for receiving, namely the tab protrudes into the donor gripper, possible contact of this tab with a warp thread is largely excluded.
  • a thread clamp is accommodated in the gripper, which is arranged with respect to the means for positioning on the side facing the goods edge.
  • the means for receiving - as seen in the direction of movement of the encoder gripper - are located on opposite sides of the deflection guide.
  • the master gripper is provided with a sliding surface which is assigned guide means in which a holder for the master gripper and / or for a gripper belt are guided. This makes it possible to guide and support the gripper directly within the shed.
  • FIG. 1 shows a perspective view of a section of a rapier weaving machine with a donor rapier according to the invention
  • FIG. 2 is a view of FIG. 1 in the direction of arrow F2 of FIG. 1,
  • FIG. 3 is a plan view of the detail of FIGS. 1 and 2 in the direction of arrow F3 of FIG. 2,
  • FIG. 5 is a bottom view of the detail of FIG. 2 in the direction of arrow F5,
  • FIG. 6 is a view similar to FIG. 1 in an advanced position of the master gripper
  • 7 is a view of the detail of FIG. 6 in the direction of arrow F7 of FIG. 6,
  • FIGS. 1 and 6 are perspective views similar to FIGS. 1 and 6 in an even further advanced position of the encoder gripper
  • FIG. 9 is a view in the direction of arrow F9 of FIG. 8,
  • FIGS. 1, 6 and 8 shows a perspective view of the detail according to FIGS. 1, 6 and 8 in an even further advanced position of the sensor gripper
  • FIG. 11 is a view in the direction of arrow F1 of Fig. 10,
  • FIG. 12 is a view similar to FIG. 2 of a modified embodiment
  • FIG. 13 is an enlarged view of section F13 of FIG. 12,
  • FIG. 14 is a perspective view similar to FIG. 1 of a further modified embodiment
  • FIG. 16 is a bottom view in the direction of arrow F16 of FIG. 15,
  • FIG. 17 shows a view similar to FIG. 2 of a modified embodiment while the donor gripper is already in a shed
  • FIG. 18 is a view in the direction of arrow F18 of FIGS. 17 and 19 is a view similar to FIG. 17 of a modified embodiment.
  • the device 1 shown in FIG. 1 for inserting a weft thread 2 for a rapier weaving machine contains a mountain rapier 3 and a deflection guide 4.
  • the weft thread 2 to be supplied extends from the fabric edge of a fabric 8 through a thread guide eyelet 6 of a thread feeder 5 a weft supply, not shown.
  • the weft thread 2 runs from the weft thread supply in direction B to the thread feeder 5.
  • the deflection guide 4 is part of a guide profile 9 in the embodiment shown, which guides a gripper belt 17 to which a holder 16 is attached, on which the master gripper 3 is mounted (FIG. 4). Furthermore, warp threads 10, 11 of a warp thread group and shed forming means 12, 13 are indicated in FIG. 1, which form a shed 14 from the warp threads 10, 11. For reasons of clarity, a sley with a reed is not shown, which is located between the fabric 8 and the shedding means 12, 13.
  • the view according to FIG. 2 shows the position of the donor gripper relative to the deflecting guide 4.
  • the weft thread 2 runs from the thread guide eyelet 6 over the deflecting edge 7 of the deflecting guide 4 to the fabric edge of the fabric 8, with which the previously supplied weft thread after being struck with the help of the reed remains connected.
  • the encoder gripper 3 consists essentially of a curved plate 15, in particular a stainless steel plate or aluminum plate, which is connected to a gripper belt 17 by means of a holder 16.
  • the plate 15 is bent into a U-shaped cross section so that it forms a hollow chamber 31 which extends in the longitudinal direction of the gripper 3.
  • This hollow chamber 31 is open at the front and rear end of the transducer gripper 3 and towards the deflection guide 4, as can be seen from the further description.
  • the U-shaped plate 15 has a long leg, which is arranged above the deflection guide 4, and a short leg, which is located laterally from the deflection guide 4.
  • the donor gripper is equipped with means for receiving the weft thread 2, with means for positioning the weft thread 2 within the donor gripper 3 and with means for taking away or clamping the picked weft thread.
  • the longer leg 24 begins shortly after the tip 20, its size increasing from the tip.
  • the obliquely running underside of the transverse web 32, together with the short leg starting at a distance from the tip 20, forms a receptacle 18 designed as a guide for the weft thread.
  • the weft thread 2 slides down on this receptacle 18 (FIG.
  • a tab 25 is cut out of the longer leg 24 of the U-shaped plate and bent inwards, which forms a second means for receiving the weft thread 2.
  • This tab 25 extends obliquely to the front and then forms an approximately wedge-shaped tip 26 a guide surface 21 which leads the weft thread obliquely upwards in the plane of the longer leg 24 to a recess 22 provided there, which serves as a second means for Positioning is used.
  • this as a means for receiving the tab 25, captures the section 2B of the weft thread, which is located between the deflecting edge 7 and the fabric edge of the fabric 8.
  • the edge 27 running downward from the tip 26 of the tab 25 forms an oblique guide which is flush with a web 28 of the holder 16, which runs obliquely to the foot part 29 of the holder 16, which is arranged in an extension of the gripper belt 17.
  • the sensor gripper 3 contains a thread clamp 30, which is attached to the inside of the longer leg 24 of the plate 15.
  • the thread clamp 30 is located at a point that lies between the guide surface 21 of the tab 25 and the fabric 8.
  • the thread clamp 30 consists of a leaf spring which runs in the direction of movement A of the sensor gripper and which is attached to the inside of the underside of the plate 15.
  • the thread clamp 30 interacts with the inside of the plate 15.
  • the encoder gripper 3 is designed in such a way that its height increases steadily starting from the tip in the direction of the gripper belt 17, so that there are no places where warp threads 10, 11 can be gripped .
  • a guide surface 23 extends next to the receptacle 18 to the upper leg 24 of the plate 15.
  • no warp threads 10, 11 can be clamped between the thread clamp 30 and the plate 15.
  • the tip 26 of the tab 25 is located in the direction of movement A at a safe distance from the tip 20 of the master gripper 3, which is formed by the transverse web 32 of the U-shaped plate 15.
  • the transverse web 32 has such a high height in the region of the tip 26 of the loop 25 that the warp threads separated from the bridge cannot be grasped by the loop 25. If they reach this area at all, they are deflected by the guide edges 27 and 28 in the direction of the foot part 29 of the holder 16. As can be seen in particular from FIG. 4, the tip 26 of the tab 25 projects into the hollow chamber 31, but only with a size that is less than half the height of the web 32.
  • the distance C according to FIG. 2 between the inside of the longer leg 24 of the plate 15 and the deflection edge 7 of the deflection part 4 is at least 2 mm, preferably between 3 and 5 mm.
  • the deflection edge 7 of the deflection guide 4 of the weft thread 2 projects into the hollow chamber 31 formed by the plate 15 in such a way that the means for receiving the weft thread 2, i.e. the guide 18 starting from the tip 20 of the web 32 and the guide 21 starting from the tip 26 of the tab 25 each lie on opposite sides of the deflection edge 7. Since the hollow chamber 31 is open at the front and rear, the picking gripper 3 can move freely along the deflection guide 4.
  • the guide surface which adjoins the tip 20 of the web and serves as the receptacle 18 detects the section 2A of the ready-made weft thread 2 which extends from the deflection edge 7 to the guide tion eyelet 6 of the thread feeder 5 extends. This is deflected downward until it reaches the recess 19 of the short web serving as a means for positioning. Thereafter, the tab 25 serving as a receptacle grips above its tip 26 with the guide surface 21 the section 2B of the weft thread 2 which extends from the fabric edge of the fabric 8 to the deflecting edge 7.
  • the weft thread 2 is lifted from the deflecting edge 7 when the donor gripper 3 moves forward in the direction A, whereby it is inserted into the recess 22 serving as a means for positioning and also into the thread clamp 30 arrives.
  • the weft thread is then cut off with a pair of guillotine scissors 35, which is shown schematically in FIGS. 10 and 11, in the area between the thread clamp 30 and the fabric 8.
  • a section 2C of the weft thread 2 then lies freely within the hollow chamber 31 between the recesses 19, 22 which determine the positioning, so that this weft thread section 2C lies at a defined point and is securely held by a taker or a slave hook can be taken over.
  • the weft thread provided runs obliquely from the fabric edge of the fabric 8 to the thread feeder 5 via the deflection edge 7, ie obliquely to the direction of movement A of the donor gripper 3 away from the fabric 8.
  • the weft thread 2 is taken up one after the other by the guide surfaces 18 and 21 and is also positioned one after the other in the recesses 19 and 22 and is also introduced into the weft thread clamp 30, the tension in the weft thread is gradually increased, so that the risk of Weft breaks are reduced.
  • An increase in the tension of the weft thread 2 occurs when the weft thread 2 due to the guiding along the Guide surfaces 18 and 21 and / or on the deflection edge is lengthened.
  • a plurality of thread feeders 5 are provided, each of which can hold a weft thread 2 of the same type or also of different types on the deflection guide 4 for picking up and taking it along with the master gripper 3.
  • the thread feeders each place the relevant weft thread in the same position on the deflection guide 4. Due to the construction of the donor gripper, however, deviations are also permitted in the direction in which the different weft threads 2 are deposited on the deflecting edge 7 starting from the edge of the fabric 8 towards the thread feeder 5.
  • the weft thread 2 does not of course have to be kept between a thread feeder 5 and the fabric 8.
  • 12 shows, for example, an exemplary embodiment in which a weft thread 2 is kept ready by means of a thread guide 33 which is attached to a sley of a weaving machine in a manner disclosed in the description US Pat. No. 4,840,203.
  • the weft thread 2 is fed by means of a feed clamp 34 which is moved by a mechanism in accordance with US Pat. No. 4,840,203.
  • weft thread 2 is also guided over a deflecting edge 7 of a deflecting guide 4 in such a way that it is located in the region of the hollow chamber 31 of the gripper 3 in the manner already described, so that it increases gradually Mender voltage can be picked up by the gripper 3 when it moves in direction A towards the shed.
  • the weft thread is also not clamped directly on the underside of the plate 15 by means of the thread clamp 30. Rather, an intermediate piece 36 made of metal is provided, which is attached to the plate 15 by means of one or more elastic elements 37.
  • the elastic elements 37 consist, for example, of a rubber-like elastic intermediate layer and insulating material.
  • the deflection guide 4 with the deflection edge 7 is not in one piece with the guide profile 9, but rather is produced as a separate component and by means of screws 42 or the like. is attached to the guide profile 9.
  • the exemplary embodiment of the encoder gripper 3 'according to FIGS. 14 to 16 works on the same principle as the encoder gripper 3 explained with reference to FIGS. 1 to 13, but it differs from this in terms of design.
  • a U-shaped plate 15 is provided, which has a long leg located above the deflection edge 7 of the deflection guide 4 and a short leg located laterally next to the deflection guide and which forms a hollow chamber 31 into which the deflection edge 7 of the deflection guide 4 protrudes in such a way that the weft thread 2 is received on both sides of the deflection guide 4.
  • the web 32 of the U-shaped plate is shorter than the upper leg, so that the guide surface 39 serving as a means for receiving essentially begins at the upper edge of the web and then to a recess serving as a means for positioning 19 of the short legs is running.
  • the upper leg forms a tip 40 which is slightly bent inwards towards the hollow chamber in order to avoid the detection of warp threads.
  • a tab 25 is bent inwards from the longer leg, forming a tip 26, of which a guide serving as a means for receiving the weft thread surface 21 leads to a recess 22 which serves as a means for positioning the weft.
  • the thread clamp clamps the weft thread in the region of the recess 22 used for positioning against the underside of the longer leg of the plate 15.
  • the clamp also consists in this embodiment of a leaf spring strip which is attached to the inside of the longer leg of the plate 15.
  • the guide elements in the area of the cutting-like guide surface 48 are tapered with bevels 53 and in the region of the hook-shaped extension 44 with tapered surfaces 54 in order to penetrate the shed 14 through the warp thread sheet 11 to facilitate it.
  • the bevels 53 form a point directed towards the stop line 51.
  • the plane 50 runs in which the Guide surfaces 48 of the guide elements 43 lie somewhat below the stop edge 51, ie the fabric edge of a fabric, against which the reed 47 strikes a weft thread that has been inserted.
  • the master gripper 3 of the exemplary embodiment according to FIGS. 1 to 13 or the master gripper 3 'according to FIGS. 14 to 16 is provided with a sliding surface 46 with which it is attached to the outside of a Outer surface 45 of the guide elements 43 is guided.
  • the sliding surface 46 is a section of the short leg of the U-shaped plate, which adjoins in the direction of the shed toward the recess 19 used for positioning, which can be seen, for example, in FIGS. 5 and 16. As can be seen in particular from FIG.
  • this sliding surface 46 lies opposite the side edge of the gripper belt 17 and / or the foot part 29 of the holder 16, so that the gripper belt is largely positively guided in the area of the gripper 3.
  • the shoulder 44 of the guide elements 43 protrudes into the hollow chamber 31 of the gripper 3.
  • the short leg of the plate 15, which forms the sliding surface 46 has a sliding strip or a coating is provided, which consists of a good sliding, wear-resistant material.
  • the projections 44 of the guide elements 43 have no guide surface 52 assigned to the upper side of the gripper belt 17 and the foot part 29 of the holder 16.

Landscapes

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

Abstract

L'invention concerne une pince de transfert (3) pour une machine à tisser à rapières, qui saisit un fil reposant sur un guide déflecteur (4, 7) et maintenu à disposition au moyen d'un fournisseur de fil (5), positionne ledit fil et l'entraîne dans la foule de tissage (14). La pince de transfert forme une chambre creuse (31) s'étendant dans le sens longitudinal, ouverte à l'avant et à l'arrière ainsi que sur le côté tourné vers le guide déflecteur (4, 7). Des moyens (18, 21) pour saisir un fil de trame sont placés dans la chambre creuse (31).
EP97928158A 1996-06-07 1997-06-07 Pince de transfert pour une machine a tisser a rapieres Expired - Lifetime EP0906461B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
BE9600520 1996-06-07
BE9600520A BE1010334A3 (nl) 1996-06-07 1996-06-07 Inrichting voor het inbrengen van een inslagdraad bij een grijperweefmachine.
BE9700210A BE1011038A6 (nl) 1997-03-11 1997-03-11 Inrichting voor het inbrengen van een inslagdraad bij een grijperweefmachine en gevergrijper.
BE9700210 1997-03-11
PCT/EP1997/002973 WO1997047792A1 (fr) 1996-06-07 1997-06-07 Pince de transfert pour une machine a tisser a rapieres

Publications (2)

Publication Number Publication Date
EP0906461A1 true EP0906461A1 (fr) 1999-04-07
EP0906461B1 EP0906461B1 (fr) 2001-11-28

Family

ID=25663044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97928158A Expired - Lifetime EP0906461B1 (fr) 1996-06-07 1997-06-07 Pince de transfert pour une machine a tisser a rapieres

Country Status (4)

Country Link
US (1) US6179014B1 (fr)
EP (1) EP0906461B1 (fr)
DE (1) DE59705563D1 (fr)
WO (1) WO1997047792A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2037023A1 (fr) * 2007-09-12 2009-03-18 Sultex AG Pince-fil pour une tête de pince et son procédé de fonctionnement

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1303764B1 (it) * 1998-11-17 2001-02-23 S M I T S R L Societa Macchine Pinza di condotti per telai senza navetta particolarmente adatta perl'introduzione contemporanea di piu' trame nella bocca di ordito
EP1923494B1 (fr) * 2002-09-20 2012-02-08 Picanol Lance de transfert pour un métier à tisser à pince
DE10349644A1 (de) * 2003-10-21 2005-06-02 Picanol N.V. Vorrichtung zum Auswählen und Zustellen von Schussfäden zu einem Greifer einer Greiferwebmaschine
DE10349645A1 (de) * 2003-10-21 2005-06-02 Picanol N.V. Verfahren zum Auswählen und Zustellen von Schussfäden und Greiferwebmaschine mit einer Vorrichtung zum Auswählen und Zustellen von Schussfäden
EP1724383B1 (fr) * 2005-05-17 2008-12-31 Promatech S.p.A. Griffe porteuse pour métiers à tisser avec dispositif (anti-boucle) pour éviter le saisissement anticipé du fils de trame
EP1918437A1 (fr) * 2006-11-02 2008-05-07 Sultex AG Procédé et dispositif pour l'insertion du fil de trame
BE1017477A3 (nl) * 2007-02-26 2008-10-07 Picanol Nv Een grijperweefmachine voorzien van een gevergrijper en een ombuiggeleiding.
BE1026412B1 (nl) * 2018-06-21 2020-01-30 Nv Michel Van De Wiele Gevergrijperkop

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922128Y2 (ja) * 1979-07-10 1984-07-02 株式会社豊田自動織機製作所 無杼織機における緯入れ装置
DE3565132D1 (en) * 1984-04-06 1988-10-27 Picanol Nv Weft cancellation mechanism for gripper looms
NL8600857A (nl) * 1986-04-03 1987-11-02 Picanol Nv Werkwijze voor het klemmen, vasthouden en presenteren van inslagdraden bij grijperweefmachines en inrichting hiertoe aangewend.
IT1238606B (it) * 1990-01-26 1993-08-18 Nuovo Pignone Spa Dispositivo perfezionato di pinzatura del filo di trama in un telaio tessile senza navetta
EP0441099B1 (fr) * 1990-02-05 1996-01-31 Sulzer RàœTi Ag Griffe porteuse pour métiers à tisser à griffes
IT1245579B (it) * 1991-03-22 1994-09-29 Somet Soc Mec Tessile Pinza portante per telai di tessitura senza navetta
BE1006347A3 (nl) * 1992-11-16 1994-07-26 Picanol Nv Inrichting voor het presenteren van inslagdraden bij weefmachines.
IT1290838B1 (it) * 1996-02-27 1998-12-14 Nuovo Pignone Spa Pinza di condotta perfezionata per telaio tessile a pinze
DE59606723D1 (de) * 1996-06-14 2001-05-10 Rueti Ag Maschf Tragkörper für eine Fadenklemme und Bringergreifer für eine Greiferwebmaschine, mit Tragkörper

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9747792A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2037023A1 (fr) * 2007-09-12 2009-03-18 Sultex AG Pince-fil pour une tête de pince et son procédé de fonctionnement

Also Published As

Publication number Publication date
US6179014B1 (en) 2001-01-30
WO1997047792A1 (fr) 1997-12-18
EP0906461B1 (fr) 2001-11-28
DE59705563D1 (de) 2002-01-10

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