EP1037311B1 - Sealing device of a connection of a flat braid - Google Patents

Sealing device of a connection of a flat braid Download PDF

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Publication number
EP1037311B1
EP1037311B1 EP00400614A EP00400614A EP1037311B1 EP 1037311 B1 EP1037311 B1 EP 1037311B1 EP 00400614 A EP00400614 A EP 00400614A EP 00400614 A EP00400614 A EP 00400614A EP 1037311 B1 EP1037311 B1 EP 1037311B1
Authority
EP
European Patent Office
Prior art keywords
sealing
sealing device
sleeve
rigid core
connection
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
EP00400614A
Other languages
German (de)
French (fr)
Other versions
EP1037311A1 (en
Inventor
Stéphane TOGNALI
Jérôme Vandele
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.)
PIRELLI CABLES ET SYSTEMES
Pirelli Energie Cable Et Systemes France
Prysmian Energie Cables et Systemes France
Original Assignee
Pirelli Cables y Sistemas SA
Cables Pirelli SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pirelli Cables y Sistemas SA, Cables Pirelli SA filed Critical Pirelli Cables y Sistemas SA
Publication of EP1037311A1 publication Critical patent/EP1037311A1/en
Application granted granted Critical
Publication of EP1037311B1 publication Critical patent/EP1037311B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H01R4/72—Insulation of connections using a heat shrinking insulating sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases

Definitions

  • the object of the present invention is to provide sealing an end connection of a flat conductor, made in particular in the form of a flat tubular braid.
  • flat braids of this type are used to put at the same potential, in particular to the earth, junction screens of high voltage electric cables.
  • junctions to be perfectly insulated and waterproof, means should be provided sealing also for the connection of the end of these flat shape conductors.
  • three flat braids are used which must be connected to an earth cable.
  • the object of the present invention is to eliminate these disadvantages and significantly improve the tightness of a flat conductor end connection, made in particular under the shaped like a flat tubular braid.
  • the sealing device of an end connection of flat conductor, tubular includes a sealing and protection sleeve connection made of a cold shrinkable material enclosing the connection.
  • the device further comprises a rigid core, of convex external surface, arranged at inside the end of the tubular flat conductor, the assembly consisting of the end of the tubular flat conductor and the rigid core surrounded by said end, being enclosed by the sealing and protective sleeve.
  • the flat conductor or the tubular flat braid is preferably covered with an insulating protective sheath which is capable of deform when inserting the rigid core.
  • the rigid core can advantageously have a shape cylindrical exterior. It can be produced in the form of an insert less partially hollow, for example in the form of a tube.
  • the core rigid can also be a solid element such as a bar.
  • its end can be tapered or rounded.
  • the sealing device according to the present invention can be used to seal any end connection of flat conductor.
  • a particularly interesting application of the invention allows the realization of a waterproof glove with one or more fingers, for the connection of several ground braids to a ground cable of a equipotentiality device for screens at a junction of electric cables high voltage.
  • the sealing device of the invention is suitable for a flat conductor produced in the form of a tubular braid 1 of which the end 1a has been shown diagrammatically sectional.
  • the tubular braid is covered with an insulating sheath 2 generally made of synthetic material with a certain elasticity which allows a deformation as we will see later.
  • the braid in itself is made up of electrically conductive wires, for example copper wires, which have been braided into a tubular form and then flattened so as to take the flat shape visible in FIG. 1.
  • a rigid core 4 which in the example illustrated in the Figure 1, a generally cylindrical shape of circular section, is produced in rigid synthetic material constituting a solid insert.
  • This nucleus 4 was threaded inside the end 1a of part 3 of the flat braid tubular which surrounds, as shown in 3a, the periphery of the core 4.
  • An empty space 5 remains between the core 4 and the braid part 3 of flat shape, this space 5 being located in the zone where the braid passes from the flat shape to cylindrical shape 3a.
  • the core 4 can also be produced under the shape of a hollow tube, insofar as the resistance of the tube is sufficient to withstand the pressure exerted by the retractable sleeve 6.
  • the core 4 can also be made of metal or any other material.
  • the end of the latter can be tapered or rounded, thus occupying at least part of the space 5.
  • a conductor is in the form of a flat tubular braid 1 covered with a insulating protective sheath changes from flat form to form substantially cylindrical thanks to the insertion of a rigid core not visible in Figure 2, the assembly being enclosed by a sleeve 6 which provides sealing and protection.
  • three flat conductors 1 are are connected by means of a sealing device according to the invention produced in the form of a glove 7 with three fingers 6, the assembly being constituted by a cold shrinkable material which provides sealing and protection of the connection.
  • the present invention thus allows in a simple manner to obtain an excellent seal for the end connection of a tubular flat conductor and in particular a conductor in the form of a flat braid.

Abstract

The protective sleeve is fitted tightly on to the braided conductor against an inner core. The system for sealing the end of a flat connector (1), especially a tubular braid, comprises a sealing sleeve (6) surrounding the connector end. The sleeve is made from a cold-shrinkable material surrounding the connection, with a rigid core (4) having a convex outer surface threaded inside the end of the tubular flat braid. The braid is retained on the supporting core by the shrink action of the protective outer sleeve (6). The braid itself (3) may be covered by an insulating layer of material (2) which then lies between the braid and the shrink-fitting sleeve. The rigid core (4) may be at least partially hollow.

Description

La présente invention a pour objet la réalisation de l'étanchéité d'une connexion d'extrémité d'un conducteur plat, réalisé en particulier sous forme d'une tresse plate tubulaire.The object of the present invention is to provide sealing an end connection of a flat conductor, made in particular in the form of a flat tubular braid.

On utilise fréquemment des conducteurs électriques de forme générale plate, en particulier réalisés sous la forme d'une tresse de fil en matériau conducteur de l'électricité, se présentant initialement sous une forme tubulaire puis écrasée de façon à prendre une forme plate et recouverte d'une gaine de protection isolante. Un exemple d'un dispositif d'étanchéité d'une connecxion d'extrémité de conducteur plat tubulaire selon le préambule de la revendication 1 est décrit dans la demande de brevet allemand DE-A-4 416 350.Frequently used electrical conductors general flat, in particular made in the form of a braid of wire in electrically conductive material, initially occurring under a tubular then crushed to take a flat shape and covered with an insulating protective sheath. An example of a device for sealing an end connection of a tubular flat conductor according to the preamble of claim 1 is described in German patent application DE-A-4 416 350.

On utilise en particulier des tresses plates de ce type pour mettre au même potentiel, en particulier à la terre, des écrans de jonction de câbles électriques à haute tension. De telles jonctions devant être parfaitement isolées et étanches, il convient de prévoir des moyens d'étanchéité également pour la connexion de l'extrémité de ces conducteurs de forme plate.In particular, flat braids of this type are used to put at the same potential, in particular to the earth, junction screens of high voltage electric cables. Such junctions to be perfectly insulated and waterproof, means should be provided sealing also for the connection of the end of these flat shape conductors.

On utilise ainsi, généralement, trois tresses plates qui doivent être connectées à une câblette de terre. Pour réaliser l'étanchéité de la connexion, on dispose les extrémités des trois tresses plates les unes au-dessus des autres, on entoure l'ensemble avec un matériau isolant du type mastic qui vient remplir les interstices des extrémités des trois tresses plates et on enserre le tout à l'aide d'une gaine ou d'un manchon rétractable à froid, qui vient également enserrer la câblette de terre réalisée sous la forme d'un conducteur rond.Generally, three flat braids are used which must be connected to an earth cable. To seal the connection, we have the ends of the three flat braids one above the other others, we surround the assembly with an insulating material of the type putty which fills the interstices of the ends of the three braids flat and we enclose everything with a sheath or a retractable sleeve cold, which also encloses the earth cable made under the shaped like a round conductor.

Une telle réalisation connue présente de nombreux inconvénients. En effet, le mastic d'étanchéité risque de fluer avec les variations de température, entraínant des défauts d'étanchéité. On constate, de plus, dans la pratique, que malgré l'utilisation du mastic d'étanchéité, le manchon ou la gaine rétractable qui vient enserrer l'ensemble peut ne pas entrer convenablement en contact avec le mastic compte tenu de la forme plate des tresses, de sorte qu'il peut en résulter des zones non protégées à l'intérieur de la gaine après rétraction.Such a known embodiment has many disadvantages. In fact, the sealant may leak with the temperature variations, resulting in leaks. We notes, moreover, in practice, that despite the use of putty sealing, the sleeve or the retractable sheath which comes to enclose the assembly may not come into proper contact with the sealant taking into account the flat shape of the braids, so that this can result in unprotected areas inside the sheath after shrinking.

La présente invention a pour objet de supprimer ces inconvénients et d'améliorer considérablement l'étanchéité d'une connexion d'extrémité de conducteur plat, réalisé en particulier sous la forme d'une tresse plate tubulaire.The object of the present invention is to eliminate these disadvantages and significantly improve the tightness of a flat conductor end connection, made in particular under the shaped like a flat tubular braid.

Tel qu'il est revendiqué, le dispositif d'étanchéité d'une connexion d'extrémité de conducteur plat, tubulaire comprend un manchon d'étanchéité et de protection de la connexion réalisé en un matériau rétractable à froid enserrant la connexion. Selon l'invention le dispositif comprend en outre un noyau rigide, de surface extérieure convexe, disposé à l'intérieur de l'extrémité du conducteur plat tubulaire, l'ensemble constitué par l'extrémité du conducteur plat tubulaire et le noyau rigide entouré par ladite extrémité, étant enserré par le manchon d'étanchéité et de protection.As claimed, the sealing device of an end connection of flat conductor, tubular includes a sealing and protection sleeve connection made of a cold shrinkable material enclosing the connection. According to the invention, the device further comprises a rigid core, of convex external surface, arranged at inside the end of the tubular flat conductor, the assembly consisting of the end of the tubular flat conductor and the rigid core surrounded by said end, being enclosed by the sealing and protective sleeve.

Le conducteur plat ou la tresse plate tubulaire est de préférence recouverte d'une gaine de protection isolante qui est capable de se déformer lors de l'insertion du noyau rigide.The flat conductor or the tubular flat braid is preferably covered with an insulating protective sheath which is capable of deform when inserting the rigid core.

Le noyau rigide peut présenter avantageusement une forme extérieure cylindrique. Il peut être réalisé sous la forme d'un insert au moins partiellement creux, par exemple sous la forme d'un tube. Le noyau rigide peut également être un élément plein tel qu'une barre.The rigid core can advantageously have a shape cylindrical exterior. It can be produced in the form of an insert less partially hollow, for example in the form of a tube. The core rigid can also be a solid element such as a bar.

Afin de faciliter l'insertion du noyau rigide, son extrémité peut être effilée ou arrondie.In order to facilitate the insertion of the rigid core, its end can be tapered or rounded.

Le dispositif d'étanchéité selon la présente invention peut être utilisé pour réaliser l'étanchéité de toute connexion d'extrémité de conducteur plat.The sealing device according to the present invention can be used to seal any end connection of flat conductor.

Une application particulièrement intéressante de l'invention permet la réalisation d'un gant d'étanchéité à un ou plusieurs doigts, pour la connexion de plusieurs tresses de terre à une câblette de terre d'un dispositif d'équipotentialité d'écrans d'une jonction de câbles électriques à haute tension.A particularly interesting application of the invention allows the realization of a waterproof glove with one or more fingers, for the connection of several ground braids to a ground cable of a equipotentiality device for screens at a junction of electric cables high voltage.

L'invention sera mieux comprise à l'étude de quelques modes de réalisation décrits de manière plus détaillée et illustrés par les dessins annexés, sur lesquels :

  • la figure 1 est une vue schématique partiellement en coupe, montrant le principe d'un dispositif d'étanchéité selon l'invention;
  • la figure 2 montre en vue extérieure partielle un dispositif d'étanchéité d'un conducteur unique selon l'invention; et
  • la figure 3 illustre également en vue extérieure la réalisation de l'étanchéité d'un gant à trois doigts.
    • The invention will be better understood from the study of a few embodiments described in more detail and illustrated by the appended drawings, in which:
  • Figure 1 is a schematic view partially in section, showing the principle of a sealing device according to the invention;
  • Figure 2 shows in partial external view a sealing device of a single conductor according to the invention; and
  • Figure 3 also illustrates an external view of the sealing of a three-finger glove.

    • Tel qu'il est illustré sur la figure 1, le dispositif d'étanchéité de l'invention est adapté à un conducteur plat réalisé sous la forme d'une tresse tubulaire 1 dont on a représenté schématiquement l'extrémité 1a vue en coupe. La tresse tubulaire est recouverte d'une gaine isolante 2 généralement en matériau synthétique présentant une certaine élasticité qui autorise une déformation comme on le verra plus loin. La tresse en elle-même est constituée de fils conducteurs de l'électricité, par exemple des fils de cuivre, qui ont été tressés sous forme tubulaire puis aplatis de façon à prendre la forme plate visible sur la figure 1.As illustrated in FIG. 1, the sealing device of the invention is suitable for a flat conductor produced in the form of a tubular braid 1 of which the end 1a has been shown diagrammatically sectional. The tubular braid is covered with an insulating sheath 2 generally made of synthetic material with a certain elasticity which allows a deformation as we will see later. The braid in itself is made up of electrically conductive wires, for example copper wires, which have been braided into a tubular form and then flattened so as to take the flat shape visible in FIG. 1.

    Un noyau rigide 4, qui présente dans l'exemple illustré sur la figure 1, une forme générale cylindrique de section circulaire, est réalisé en matière synthétique rigide constituant un insert plein. Ce noyau 4 a été enfilé à l'intérieur de l'extrémité 1a de la partie 3 de la tresse plate tubulaire qui vient entourer, comme représenté en 3a, la périphérie du noyau 4. Un espace vide 5 subsiste entre le noyau 4 et la partie de tresse 3 de forme plate, cet espace 5 se situant dans la zone où la tresse passe de la forme plate à la forme cylindrique 3a.A rigid core 4, which in the example illustrated in the Figure 1, a generally cylindrical shape of circular section, is produced in rigid synthetic material constituting a solid insert. This nucleus 4 was threaded inside the end 1a of part 3 of the flat braid tubular which surrounds, as shown in 3a, the periphery of the core 4. An empty space 5 remains between the core 4 and the braid part 3 of flat shape, this space 5 being located in the zone where the braid passes from the flat shape to cylindrical shape 3a.

    L'étanchéité de l'ensemble est ensuite assurée par la pression exercée par un manchon d'étanchéité et de protection 6 en un matériau rétractable à froid ayant un diamètre approprié pour exercer cette pression d'étanchéité sur la tresse dans sa partie cylindrique 3a recouverte de la gaine de protection 2, le noyau rigide 4 assurant la résistance à la compression.The tightness of the assembly is then ensured by the pressure exerted by a sealing and protective sleeve 6 made of a material cold shrinkable with an appropriate diameter to exert this pressure sealing on the braid in its cylindrical part 3a covered with the protective sheath 2, the rigid core 4 ensuring resistance to compression.

    On comprendra que le noyau 4 puisse être également réalisé sous la forme d'un tube creux, dans la mesure où la résistance du tube est suffisante pour résister à la pression exercée par le manchon rétractable 6. Le noyau 4 peut également être réalisé en métal ou en tout autre matériau. De plus, il n'est pas impératif que le noyau 4 présente une surface extérieure cylindrique. Il suffit que cette surface soit généralement convexe, de façon à assurer un bon contact d'étanchéité lors de la rétraction du manchon d'étanchéité de protection 6. Pour faciliter l'insertion du noyau 4, l'extrémité de celui-ci peut être effilée ou arrondie, occupant ainsi au moins en partie l'espace 5.It will be understood that the core 4 can also be produced under the shape of a hollow tube, insofar as the resistance of the tube is sufficient to withstand the pressure exerted by the retractable sleeve 6. The core 4 can also be made of metal or any other material. In addition, it is not imperative that the core 4 has a surface cylindrical exterior. It is sufficient that this surface is generally convex, so as to ensure good sealing contact during the shrinkage of the protective sealing sleeve 6. To facilitate the insertion of the core 4, the end of the latter can be tapered or rounded, thus occupying at least part of the space 5.

    Comme on peut le voir sur la figure 2, un conducteur se présentant sous la forme d'une tresse plate tubulaire 1 recouvert d'une gaine de protection isolante passe de la forme plate à une forme sensiblement cylindrique la grâce à l'insertion d'un noyau rigide non visible sur la figure 2, l'ensemble étant enserré par un manchon 6 qui assure l'étanchéité et la protection.As can be seen in Figure 2, a conductor is in the form of a flat tubular braid 1 covered with a insulating protective sheath changes from flat form to form substantially cylindrical thanks to the insertion of a rigid core not visible in Figure 2, the assembly being enclosed by a sleeve 6 which provides sealing and protection.

    Dans la variante de la figure 3, trois conducteurs plats 1 se trouvent connectés au moyen d'un dispositif d'étanchéité selon l'invention réalisé sous la forme d'un gant 7 à trois doigts 6, l'ensemble étant constitué par un matériau rétractable à froid qui assure l'étanchéité et la protection de la connexion.In the variant of FIG. 3, three flat conductors 1 are are connected by means of a sealing device according to the invention produced in the form of a glove 7 with three fingers 6, the assembly being constituted by a cold shrinkable material which provides sealing and protection of the connection.

    La présente invention permet ainsi d'une manière simple d'obtenir une excellente étanchéité pour la connexion d'extrémité d'un conducteur plat tubulaire et en particulier d'un conducteur sous la forme d'une tresse plate.The present invention thus allows in a simple manner to obtain an excellent seal for the end connection of a tubular flat conductor and in particular a conductor in the form of a flat braid.

    Claims (8)

    1. Sealing device for an end connection of a tubular flat conductor, comprising a sleeve (6) for sealing and protecting the connection, the sleeve being made of a cold-recoverable material which grips the connection, characterized in that the said device additionally comprises a rigid core (4) of convex external surface placed inside the end of the tubular flat conductor (3a), the assembly consisting of the end of the tubular flat conductor and the rigid core surrounded by the said end being gripped by the protective sealing sleeve (6).
    2. Sealing device for an end connection of a tubular flat conductor according to Claim 1, which is covered with an insulating protective sheath (2), characterized in that the assembly consisting of the insulating protective sheath, the end of the tubular flat conductor and the rigid core surrounded by the said end is gripped by the protective sealing sleeve (6).
    3. Sealing device according to either of Claims 1 and 2, characterized in that the rigid core (4) has a cylindrical-external shape.
    4. Sealing device according to any one of the preceding claims, characterized in that the rigid core (4) is an at least partially hollow insert.
    5. Sealing device according to either of Claims 2 and 3, characterized in that the rigid core is a solid bar.
    6. Sealing device according to Claim 5, characterized in that the end of the rigid core is tapered or rounded so as to make it easier to insert it inside the flat conductor (3a).
    7. Sealing device according to one of the preceding claims, in which the flat conductor is a flat braid.
    8. Use of a sealing device according to any one of the preceding claims to produce a multi-fingered sealing glove for the connection of several earth braids to an earth cable of a device for making the screens of a power-cable joint an equipotential surface.
    EP00400614A 1999-03-09 2000-03-07 Sealing device of a connection of a flat braid Expired - Lifetime EP1037311B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9902909A FR2790864B1 (en) 1999-03-09 1999-03-09 SEALING DEVICE OF A FLAT BRAID CONNECTION
    FR9902909 1999-03-09

    Publications (2)

    Publication Number Publication Date
    EP1037311A1 EP1037311A1 (en) 2000-09-20
    EP1037311B1 true EP1037311B1 (en) 2002-12-04

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00400614A Expired - Lifetime EP1037311B1 (en) 1999-03-09 2000-03-07 Sealing device of a connection of a flat braid

    Country Status (7)

    Country Link
    US (1) US6568690B1 (en)
    EP (1) EP1037311B1 (en)
    AT (1) ATE229236T1 (en)
    AU (1) AU762425B2 (en)
    DE (1) DE60000884T2 (en)
    ES (1) ES2188483T3 (en)
    FR (1) FR2790864B1 (en)

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE112014002248T5 (en) * 2013-05-02 2016-01-28 Gentherm Canada Ltd. Liquid-resistant heating element
    CN103700978A (en) * 2014-01-06 2014-04-02 启东乾朔电子有限公司 Water-proof connector and manufacturing method of water-proof connector

    Family Cites Families (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2906810A (en) * 1956-02-15 1959-09-29 Anaconda Wire & Cable Co Insulated electric conductor splice
    BE635318A (en) * 1962-07-23
    US4292099A (en) * 1979-03-12 1981-09-29 Amp Incorporated Method for environmentally sealing a wire splice
    US5473117A (en) * 1994-02-17 1995-12-05 Alcatel Network Systems, Inc. Flexible cable grounding scheme
    DE4416350C2 (en) * 1994-05-09 2003-08-07 Ccs Technology Inc Method of making a contact between copper band screens at end closures at the ends of medium and high voltage cables and a contacting device
    DE19543016C2 (en) * 1995-11-18 2000-11-02 Daimler Chrysler Aerospace Protective hose arrangement

    Also Published As

    Publication number Publication date
    DE60000884T2 (en) 2003-08-28
    US6568690B1 (en) 2003-05-27
    AU2076300A (en) 2000-09-14
    ATE229236T1 (en) 2002-12-15
    ES2188483T3 (en) 2003-07-01
    DE60000884D1 (en) 2003-01-16
    FR2790864B1 (en) 2001-06-01
    EP1037311A1 (en) 2000-09-20
    FR2790864A1 (en) 2000-09-15
    AU762425B2 (en) 2003-06-26

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