EP0992619B2 - Offenend-spinnrotor - Google Patents

Offenend-spinnrotor Download PDF

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Publication number
EP0992619B2
EP0992619B2 EP99124585A EP99124585A EP0992619B2 EP 0992619 B2 EP0992619 B2 EP 0992619B2 EP 99124585 A EP99124585 A EP 99124585A EP 99124585 A EP99124585 A EP 99124585A EP 0992619 B2 EP0992619 B2 EP 0992619B2
Authority
EP
European Patent Office
Prior art keywords
rotor
open
spinning rotor
wall
end spinning
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.)
Expired - Lifetime
Application number
EP99124585A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0992619A3 (de
EP0992619A2 (de
EP0992619B1 (de
Inventor
Werner Billner
Werner Bergmeier
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6533566&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0992619(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0992619A2 publication Critical patent/EP0992619A2/de
Publication of EP0992619A3 publication Critical patent/EP0992619A3/de
Application granted granted Critical
Publication of EP0992619B1 publication Critical patent/EP0992619B1/de
Publication of EP0992619B2 publication Critical patent/EP0992619B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/10—Rotors

Definitions

  • the present application relates to an open-end spinning rotor according to the preamble of claim 1.
  • a method for open-end spinning and an open-end spinning apparatus in which the fibers emerging from the fiber feed channel initially arranged on a perpendicular to the rotor axis Wall are fed, whereby they are arranged compressed in the plane of this surface, while the transport air is separated from the fibers.
  • the fibers are fed onto the sliding wall of the spinning rotor, viewed in the axial direction of the spinning rotor.
  • the fibers slide down the sliding wall into the fiber collecting groove of the spinning rotor. From there they are integrated into the forming thread and pulled out of the rotor.
  • Another disadvantage of the prior art open-end spinning apparatuses is that feed of the fibers directly into the fiber collecting groove is prevented by not being able to shorten the distance between the fiber collecting groove and the end of the sliding surface.
  • the open-end spinning rotors of the prior art have at their open end such a small diameter, due to the inclination and particular length of Fasergleitwand seen in the axial direction, that the diameter of the reaching into the spinning rotor portion of the lid of the open-end rotor spinning a significant must have smaller diameter than the fiber collecting groove of the spinning rotor.
  • the rotor lid is pivoted by a pivoting movement with a pivot axis which is perpendicular to the shaft of the spinning rotor and at a distance from the spinning rotor, it is necessary that the projecting into the spinning rotor part of the rotor lid, not to pivot on the Collide edge of the spinning rotor, again smaller must be formed.
  • DE-A 23 01439 is not applicable, because it related to spinning rotors with diameters in the region of the fiber collecting groove of then common values of well over 45 to 50 mm diameter in the fiber collection.
  • the prior art unlike that taught in DE-A 23 01439, has developed to the effect that the mean height h has been chosen to be the same regardless of the diameter of the fiber collecting groove, values ranging from 9.5 mm to 11.5 mm Application found at diameters of the fiber collecting groove between 30 mm and 40 mm.
  • no information whatsoever is given with regard to the feeding of fibers into the spinning rotor, so that there are no suggestions from this prior art for the development of spinning rotors which can be used at higher rotational speeds.
  • Object of the present invention is to provide an open-end spinning rotor in such a way that the disadvantages of the prior art are overcome and the inventive embodiment, it is possible to feed the fibers into the spinning rotor in a favorable manner, so that spinning rotors with a diameter of about 30 mm and far below can be used.
  • This has the particular advantage that the profitability of the open-end rotor spinning can be increased significantly, because the production speed of the thread can be significantly increased by particularly small rotors
  • Another object of the present application is to propose an open-end spinning rotor, which can be used particularly favorably at high speeds, with speeds of much more than 130,000 U / min should be possible and at the same time the spinning rotor are operated with less use of drive energy should, he should have a lower mass and it has good center of gravity, because the focus is moved more near the bearing point of the spinning rotor.
  • the invention of the present application is based, inter alia, on the recognition that, in contrast to the ideas of the prior art, the sliding of the fibers along the wall of the spinning rotor does not substantially result in the desired effect, namely that the fibers are thus incorporated into the yarn that this receives a satisfactory structure.
  • the so-called abdominal bandages that is, fibers that are wrapped around the yarn, rather than being part of the fiber composite, can not be reduced or avoided.
  • a favorable orientation of the fibers is no longer resolved by the only small or completely omitted Gleitweg on the wall of the spinning rotor, so that the fibers are better parallelized and oriented to each other.
  • the fibers come thereby with their beginning and their end lying in a level in the fiber collecting groove.
  • the number of so-called abdominal ligaments is reduced, since fewer thread beginnings are incorporated into the thread, as long as their ends are not yet in the fiber collecting groove.
  • the wall of the spinning rotor which extends in the interior from the fiber collecting groove to the edge, has an inclination in relation to the axis of rotation of the spinning rotor of 15 'to 21'. This ensures that the fibers safely and quickly reach the fiber collecting groove, even if the wall is formed rough. Particularly advantageous is an inclination of 17 'and more, for example between 17' and 19 '.
  • the wall of the spinning rotor is made rough, for example by means of a hard particle coating, e.g. Diamond.
  • the open-end spinning rotor has a fiber collecting groove with a diameter of less than 35 mm. This makes it possible to design a particularly economical embodiment of the invention. The advantages of the invention are particularly useful when the fiber collecting groove has a diameter of less than 30.5 mm. Particularly favorable is the open-end spinning rotor designed, if this has a shaft for storage and / or its drive. As a result, the rotor is easy to replace and both just as easy to drive and decelerate.
  • the spiro rotor is equipped on its opposite side to the open end with a bearing surface, which may be configured, for example disk-shaped and can be formed from a magnetizable material can n., Which supports the spinning rotor both by electromagnetic forces as well as being driven can.
  • a bearing surface which may be configured, for example disk-shaped and can be formed from a magnetizable material can n.
  • the spinning rotor can also be equipped with openings in its rotor bottom, which in a known manner by the rotation of the rotor creates a negative pressure in this and extra measures for generating a negative pressure can be saved.
  • the inventive design of the open-end spinning rotor ensures that the spinning rotor can be used particularly economically at high speeds. Due to the small height of the wall between fiber collecting groove and opening of the spinning rotor is achieved that its surface is relatively small. which in particular leads to high rotational speeds - that its air resistance compared to the spinning rotors of the prior art is greatly reduced. This is additionally supported by its smaller diameter in the area of the fiber collecting groove. Nevertheless, the spinning rotor has an opening into which, for example, the approach with fiber feeding channel and the feeding surface of an open-end spinning device extends, which is formed large enough so that the parts of the open-end spinning device can be formed sufficiently large, so that the feeding of the fibers is not hindered, nor does the removal of the thread.
  • the inventive design of the size of the opening of the spinning rotor compared to the diameter of the fiber collecting groove is achieved that at the same size of the approach of the open-end spinning device, a spinning rotor with a smaller fiber collecting groove than i prior art can be used, resulting in higher rotor speeds and thus Thread delivery speeds are possible.
  • This not only increases the economic advantage because less drive energy is consumed, but also the productivity of the spinning rotor is significantly improved.
  • the spinning rotor also has the property that the wall is formed with such a small height that the orientation of the fed fibers is not significantly deteriorated by the wall of the spinning rotor.
  • the fibers can be fed in a simple manner by its opening geometry and its small height of the wall close to the area of the fiber collecting groove, even directly into the fiber collecting groove itself. This has particularly favorable effects on the quality of the spun yarn. Particularly favorable in this context, the distance between the bottom of the spinning rotor to the plane in which the fiber collecting groove is arranged. This makes it possible to make the withdrawal of the thread from this spinning rotor so that the withdrawn thread does not come into contact with the fed fibers. Such a rotor is less likely to form abdominal ligaments in the gam.
  • the fiber collecting groove has a diameter between 32 mm and 30.5 mm, wherein the opening of the rotor has a diameter of at least 25.7 mm, because thereby a particularly economically working spinning rotor can be designed, the same time still such has large opening that it can be easily fed with fibers, because the approach extends into it, can be made large enough.
  • the fiber feeding channel can retain a favorable size.
  • an open-end spinning rotor according to the invention if it has a diameter of the fiber collecting groove in the range between 27.5 mm and 30.5 mm.
  • rotor speeds of far more than 130,000 rpm are possible, whereby a particularly economically working rotor is designed.
  • in conjunction with a small height of the wall of the open-end spinning rotor so that a rotor can be obtained, which can simultaneously produce a high quality thread and this economically.
  • the open-end spinning device 1 of Figure 1 has a spinning rotor 11 according to the invention, which is mounted and driven with a rotor shaft 110.
  • the spinning rotor 11 runs inside a housing 2, which has a lid 21 which can be folded over a hinge 22, whereby the housing 2 is opened.
  • the interior of the housing 2 is acted upon by a vacuum line 23 with negative pressure.
  • the rotor shaft 110 penetrates the housing 2, wherein the Gap is chosen very narrow to maintain the negative pressure constant.
  • the lid 21 rests tight on seals 211.
  • the lid 21 has a projection 3, which projects into the interior of the spinning rotor 11.
  • the approach 3 leads a fiber feed channel 31 into the interior of the spinning rotor.
  • the approach 3 also has a Aufphilise character 32, on which the fiber feed channel 31 leaving fibers impinge and are separated from their transport air. This leaves the spinning rotor via its edge 119 at its open, an opening 111 owning end.
  • the approach 3 also has an opening 33, on the inside of the spinning rotor 11, a yarn withdrawal nozzle 4 is placed. About the opening 33 and the thread withdrawal nozzle 4 a formed in the spinning rotor 11 thread is withdrawn from this in a known manner.
  • the Aufphilise character 32 of the neck 3 is formed by a slot in the neck 3, which is incorporated substantially perpendicular to the axis of the neck 3 in this.
  • the fiber feed channel 31 opens.
  • the spinning rotor 11 has in its interior a fiber collecting groove 112 and a wall 113 which extends between the fiber collecting groove 112 and the edge 119 of the opening 111.
  • the projection 3 is so deeply immersed in the interior of the spinning rotor 11, that the plane of the Aufheise character 32 is at the same height as the plane of the fiber collecting groove 112.
  • the fibers applied to the feed face 32 by the fiber feed channel 31 slide over them and pass substantially directly into the fiber collection groove 112. Since the distance between the thread draw nozzle 4 and the rotor bottom 114 is less than the distance between the rotor bottom 114 and the plane of the fiber collection groove 112.
  • the withdrawn yarn does not come into contact with the constantly newly fed fibers, which pass from the feed surface 32 into the fiber collecting groove 112.
  • the distance is cheaper in reality a value of less than 3.6 mm.
  • the distance, in particular for small spinning rotors be a value of 1 mm to 2.8 now.
  • the feeding of the fibers into the spinning rotor takes place in the illustrated example of Figure 1 in the plane of the fiber collecting groove, so that the fibers substantially do not touch the wall 113 of the spinning rotor 11 at all.
  • the fibers are fed in a region of the wall 113 between the fiber collecting groove 112 and the edge 119, for example, with a distance to the fiber collecting groove between 1 mm and 2.8 mm. From there, the fibers then pass, without slipping large on the wall 113, in the fiber collecting groove 112.
  • the distance of the projection 3 to the wall 113 or fiber collecting groove 112 of the spinning rotor 11 may be formed asymmetrically, so that the distance on the side, on the get the fibers in the spinning rotor, designed to be much smaller than on the side facing away from this. As a result, the air which has penetrated into the rotor can more easily escape from it.
  • the lid is pivoted about the hinge 22, whereby the end of the feed surface 32 reaches into the region of the wall 113 at the edge 119 of the spinning rotor.
  • FIG. 2 shows an open-end spinning rotor 11 according to the invention.
  • the embodiment of FIG. 2 has a bearing surface 115 which, for example, consists of magnetizable material and / or is particularly wear-resistant or self-lubricating.
  • the main body 116 of the spinning rotor 11 may be made of a different material than its bearing surface 115.
  • For generating negative pressure inside the spinning rotor has these openings 117 in its rotor bottom 114. In a known manner, a suction effect is generated by this during operation of the spinning rotor used is to suck the fibers through the fiber feed channel in the spinning rotor.
  • the spinning rotor according to the invention of Figure 2 has a wall 113 which has an inventive height h of less than 7 mm. Its diameter in the area of the fiber collecting groove 112 is less than 35 mm.
  • the opening 111 which has a circular cross-section, according to the invention has a diameter equal to or more than 84 percent of the amount of the diameter of the fiber collecting groove.
  • the rotor bottom 115 has a distance of more than 4.4 mm to the plane of the fiber collecting groove 112. The distance A does not have this value everywhere, but at least some areas of the rotor bottom 114 have this distance. Conveniently, these areas of the rotor bottom 114, in which the yarn withdrawal nozzle of the neck 3 extends. By this distance A, it is possible to withdraw the thread from the fiber collecting groove in the direction of the rotor bottom 114 out, so that the fed fibers do not come into contact with the withdrawn thread.
  • the dimensions of the spinning rotor 11 are otherwise described in the claims.
  • the invention is not limited to the illustrated embodiments.
  • the rotor 11 shown in Figure 1, the openings 117 of the rotor 11 of Figure 2, or the rotor 11 of Figure 2 have no openings 117.
  • the wall 113 may have different inclinations with respect to the rotor axis to have.
  • the wall 113 may in one particular embodiment have a height of or near 0mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP99124585A 1994-11-18 1995-11-04 Offenend-spinnrotor Expired - Lifetime EP0992619B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4441087A DE4441087A1 (de) 1994-11-18 1994-11-18 Offenend-Spinnvorrichtung
DE4441087 1994-11-18
EP95117373A EP0712947B1 (de) 1994-11-18 1995-11-04 Offenend-Spinnvorrichtung

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP95117373.1 Division 1995-11-04
EP95117373A Division EP0712947B1 (de) 1994-11-18 1995-11-04 Offenend-Spinnvorrichtung
EP95117373A Division-Into EP0712947B1 (de) 1994-11-18 1995-11-04 Offenend-Spinnvorrichtung

Publications (4)

Publication Number Publication Date
EP0992619A2 EP0992619A2 (de) 2000-04-12
EP0992619A3 EP0992619A3 (de) 2000-04-26
EP0992619B1 EP0992619B1 (de) 2003-02-19
EP0992619B2 true EP0992619B2 (de) 2006-08-30

Family

ID=6533566

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99124585A Expired - Lifetime EP0992619B2 (de) 1994-11-18 1995-11-04 Offenend-spinnrotor
EP95117373A Expired - Lifetime EP0712947B1 (de) 1994-11-18 1995-11-04 Offenend-Spinnvorrichtung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP95117373A Expired - Lifetime EP0712947B1 (de) 1994-11-18 1995-11-04 Offenend-Spinnvorrichtung

Country Status (6)

Country Link
US (1) US5755087A (pt)
EP (2) EP0992619B2 (pt)
AT (2) ATE205890T1 (pt)
BR (1) BR9505210A (pt)
CZ (1) CZ287580B6 (pt)
DE (3) DE4441087A1 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910277B4 (de) * 1999-03-09 2010-11-04 Oerlikon Textile Gmbh & Co. Kg Spinnrotor für Offenend-Spinnmaschinen
DE10314936A1 (de) * 2002-08-03 2004-02-12 Rieter Ingolstadt Spinnereimaschinenbau Ag Reinigungsvorrichtung zur Reinigung eines Spinnrotors
DE10340657A1 (de) * 2003-09-04 2005-03-31 Saurer Gmbh & Co. Kg Offenend-Spinnvorrichtung
CZ301176B6 (cs) * 2004-12-07 2009-11-25 Oerlikon Czech S. R. O. Univerzální sprádací jednotka a zpusob vedení vláken touto univerzální sprádací jednotkou
DE102005062196A1 (de) † 2005-12-23 2007-06-28 Saurer Gmbh & Co. Kg Offenend-Spinnrotor für eine Kreuzspulen herstellende Textilmaschine
CZ303613B6 (cs) * 2011-11-28 2013-01-09 Rieter Cz S.R.O. Zpusob prípravy konce príze pro zaprádání na rotorových doprádacích strojích a sprádací rotor
DE102015108797A1 (de) * 2015-06-03 2016-12-08 Maschinenfabrik Rieter Ag Offenendspinnrotor mit einer Rotortasse mit einer Fasersammelrille, einem Rotorboden und eine Faserrutschwand und Offenendspinnvorrichtung mit einem Offenendspinnrotor
CN107904712B (zh) * 2017-11-01 2020-08-25 西安工程大学 一种精梳短毛转杯纱的制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH572106A5 (pt) † 1973-02-02 1976-01-30 Vyzk Ustav Bavlnarsky
AT372119B (de) † 1978-02-24 1983-09-12 Rieter Ag Maschf Spinnrotor aus stahl fuer offenend-spinnmaschinen

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CH499636A (de) * 1968-08-10 1970-11-30 Vyzk Ustav Bavlnarsky Spinnvorrichtung zum spindellosen Spinnen von Textilfasern
DE2005224A1 (de) * 1969-02-20 1970-09-03 Elitex ZSvody textilniho strojirenstvl, generalnl reditelstvl, Reichenberg (Tschechoslowakei) Verfahren zur Reinigung einer Spinnkammer an spindellosen Feinspinnmaschinen und Vorrichtung zur Durchführung des Verfahrens
GB1286960A (en) * 1969-04-09 1972-08-31 Tmm Research Ltd Improvements relating to open-end spinning devices
CS163843B1 (pt) * 1971-03-26 1975-11-07 Elitex Zavody Textilniho
DE2126841A1 (de) * 1971-05-29 1973-01-25 Schubert & Salzer Maschinen Faserbandspinnvorrichtung mit rotierender spinnkammer
GB1410972A (en) * 1972-01-14 1975-10-22 Platt Saco Lowell Ltd Spinning of textile yarns
US3834148A (en) * 1972-03-27 1974-09-10 Toyoda Automatic Loom Works Ringless spinning apparatus
DE2261042A1 (de) * 1972-12-14 1974-06-27 Fritz Stahlecker In einem tragkoerper stationaer angeordnete zufuehr- und aufloeseeinrichtung einer offen-end-spinnmaschine
GB1435057A (en) * 1973-02-28 1976-05-12 Houget Duesberg Bosson Spinning machines
CS167665B1 (pt) * 1973-10-24 1976-04-29
CS167666B1 (pt) * 1973-10-24 1976-04-29
JPS5434038Y2 (pt) * 1973-10-31 1979-10-19
DE2524093C2 (de) * 1975-05-30 1986-04-24 Fritz 7347 Bad Überkingen Stahlecker Zuführ- und Auflöseeinrichtung für ein Spinnaggregat einer Offenend-Spinnmaschine
US4170102A (en) * 1977-03-26 1979-10-09 Platt Saco Lowell Limited Open end spinning rotor with special boss
US4321788A (en) * 1978-01-20 1982-03-30 Dixie Yarns, Inc. Open end spinning apparatus
FR2425484A1 (fr) * 1978-05-09 1979-12-07 Alsacienne Constr Meca Perfectionnement aux rotors de dispositifs de filature de fibres liberees
JPS5720611Y2 (pt) * 1978-11-24 1982-05-04
DE2931567C2 (de) * 1979-08-03 1989-11-23 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Offenend-Spinnvorrichtung
CS222310B1 (en) * 1980-09-11 1983-06-24 Miroslav Rambousek Transport channel for introducing the fibres in the spinning rotor of the spindleless spinning machine
JPS58169526A (ja) * 1982-03-29 1983-10-06 Toyoda Autom Loom Works Ltd ロ−タ式オ−プンエンド精紡機
US4567723A (en) * 1984-04-06 1986-02-04 Elitex Koncern Textilniho Strojirenstvi Method of spinning staple fibers
CS258325B1 (en) * 1986-06-27 1988-08-16 Frantisek Jaros Spinning frame
DE3636182C2 (de) * 1986-10-24 1995-10-12 Schlafhorst & Co W Spinnaggregat einer OE-Rotorspinnmaschine
DE3704460C2 (de) * 1987-02-13 1993-11-18 Fritz Stahlecker Vorrichtung zum OE-Rotorspinnen
JPH07122172B2 (ja) * 1987-07-31 1995-12-25 株式会社豊田中央研究所 オ−プンエンド精紡機の紡糸ユニット
DE3734544A1 (de) * 1987-10-13 1989-05-03 Schubert & Salzer Maschinen Offenend-spinnvorrichtung und verfahren zu deren herstellung
DE3815182A1 (de) * 1988-05-04 1989-11-16 Wolfgang Grahamer Spinnrotor
DE3916238A1 (de) * 1989-05-18 1990-12-06 Fritz Stahlecker Vorrichtung zum oe-rotorspinnen
DE3923060A1 (de) * 1989-07-13 1991-01-24 Schubert & Salzer Maschinen Offenend-spinnvorrichtung
SE467212B (sv) * 1990-07-10 1992-06-15 Skf Ab Axelloes oeppen-aend-spinnrotor
DE4123255C2 (de) * 1991-07-13 1999-02-18 Fritz Stahlecker Vorrichtung zum OE-Rotorspinnen
DE59310302D1 (de) * 1992-07-01 2002-10-10 Rieter Ingolstadt Spinnerei Vorrichtung zum Offenend-Spinnen
DE4224687A1 (de) * 1992-07-25 1994-02-17 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Offenend-Spinnen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH572106A5 (pt) † 1973-02-02 1976-01-30 Vyzk Ustav Bavlnarsky
AT372119B (de) † 1978-02-24 1983-09-12 Rieter Ag Maschf Spinnrotor aus stahl fuer offenend-spinnmaschinen

Also Published As

Publication number Publication date
CZ300995A3 (en) 1996-06-12
DE59509612D1 (de) 2001-10-25
ATE232916T1 (de) 2003-03-15
DE59510562D1 (de) 2003-03-27
US5755087A (en) 1998-05-26
EP0712947A2 (de) 1996-05-22
DE4441087A1 (de) 1996-05-23
EP0712947A3 (de) 1996-08-14
BR9505210A (pt) 1997-09-16
EP0992619A3 (de) 2000-04-26
EP0992619A2 (de) 2000-04-12
CZ287580B6 (en) 2000-12-13
EP0992619B1 (de) 2003-02-19
ATE205890T1 (de) 2001-10-15
EP0712947B1 (de) 2001-09-19

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