EP0031286B1 - Vorrichtung zum Aufwickeln von Maschendraht-Viereckgeflecht - Google Patents

Vorrichtung zum Aufwickeln von Maschendraht-Viereckgeflecht Download PDF

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Publication number
EP0031286B1
EP0031286B1 EP80401836A EP80401836A EP0031286B1 EP 0031286 B1 EP0031286 B1 EP 0031286B1 EP 80401836 A EP80401836 A EP 80401836A EP 80401836 A EP80401836 A EP 80401836A EP 0031286 B1 EP0031286 B1 EP 0031286B1
Authority
EP
European Patent Office
Prior art keywords
wheel
fact
wheels
wire
mesh
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
Application number
EP80401836A
Other languages
English (en)
French (fr)
Other versions
EP0031286A1 (de
Inventor
Pierre Pilboue
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.)
Trefileries Et Cableries Chiers-Chatillon-Gorcy SA
Original Assignee
Trefileries Et Cableries Chiers-Chatillon-Gorcy 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 Trefileries Et Cableries Chiers-Chatillon-Gorcy SA filed Critical Trefileries Et Cableries Chiers-Chatillon-Gorcy SA
Priority to AT80401836T priority Critical patent/ATE6994T1/de
Publication of EP0031286A1 publication Critical patent/EP0031286A1/de
Application granted granted Critical
Publication of EP0031286B1 publication Critical patent/EP0031286B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F33/00—Tools or devices specially designed for handling or processing wire fabrics or the like
    • B21F33/002—Coiling or packing wire network
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S242/00—Winding, tensioning, or guiding
    • Y10S242/03—Coreless coilers

Definitions

  • the present invention relates to a device for a roll-up of a single-twist mesh in which the rows of meshes are folded back on themselves around their center line of articulation, alternately in one direction and in the other so as to obtain a kind of folding accordion.
  • Such mesh rolls are known from French Patent No. 1,594,975.
  • This patent describes a device allowing such placing of a mesh roll with a single twist.
  • This device comprises two spool winding drums arranged downstream of an advance drum bringing the wire mesh from a manufacturing installation. The peripheral linear speed of these winding drums is reduced to a fraction of that of the feed drum so that the wire roll which forms in the V-shaped area between the two winding drums is shaped as shown above.
  • This device is generally satisfactory but has the drawback, however, that, in order to obtain a suitable ordering of the links, the mesh must be brought to low speed and that consequently the usual manufacturing installations must operate at a speed lower than their speed. nominal resulting in a significant decrease in their performance.
  • the present invention aims to provide a roll-up device which can be used downstream of a single-twist wire mesh production installation operating at its nominal speed and making it possible to obtain more regular windings than known devices.
  • the subject of the present invention is a device for rolling up a single-twist mesh in which the rows of meshes are folded back on themselves around their median line of articulation, a device to which the mesh is capable of '' be brought to a predetermined speed in the form of a sheet in extension by the output drum of an installation for manufacturing such a mesh and comprising receiving means for the mesh animated with a longitudinal speed lower than said speed predetermined, said receiving means having in the winding position a V-shaped branch (these V-shaped receiving means being deformable as the roll is formed), characterized in that these means reception are formed by at least two sets of each two strands of a chain-like member, the plane of each of said sets being substantially perpendicular to the axis of the roll, said assemblies es being spaced from each other by a distance equal to a multiple of the diagonal of the mesh of the mesh considered, the roller being supported on these assemblies so that each strand is engaged at the bottom of a rafter.
  • support angles are provided, each having an edge directed upwards in the plane of each of the V-shaped assemblies and extending continuously between the outlet drum of the installation. for manufacturing the mesh and the end of the upstream branch of the V.
  • This arrangement enables the drawdown of each row of meshes on itself around its center line of articulation as soon as it leaves the grid-making installation.
  • said edge is advantageously in the extension of the strand corresponding to said branch of V.
  • the branch of the V on which the mesh is supplied, or upstream branch makes an angle with the horizontal of the order of 40 °.
  • the two branches of the V preferably make an angle between them of the order of 40 °.
  • each of the members is an endless chain wound on a plurality of wheels, the first two of which are each arranged at the end of one of the branches of the V, the third being provided between the first two wheels for causing the chain to take substantially said shape of V, the top of the V being formed by a fourth and a fifth pinch wheels disposed between the third wheel and, respectively, each of the first two wheels.
  • V-shaped assemblies formed from a belt wound on pulleys, or even made using ropes, cables, wires wound in the form of a spring, etc.
  • the third wheel can be movable in the plane of the V in a direction between those of the two branches of the V in order to compensate for the progressive increase in diameter of the wire roller as it is formed.
  • a sixth return wheel can also be provided in the plane of the V, in a direction opposite to that of the first two wheels relative to the third wheel.
  • the longitudinal speed of the strands of the chain is preferably obtained using one of the first two wheels which is provided for this purpose driving.
  • the downstream wheel among the first two wheels is movable in the plane of the V and is susceptible to ble to come in a position where it is substantially at the top of the V, so that the corresponding branch of the V is substantially horizontal.
  • said movable wheel can be tilted around the center of the fifth downstream pinch wheel.
  • the front wheel among the first two wheels can then be fixed, an ejector roller being provided in the plane of the V to move with said movable wheel and deform the strand corresponding to said fixed wheel in the direction of said movable wheel.
  • the ejector roller may preferably be a chain wheel to allow the device to continue to rotate while a completed wire roll is removed from the device.
  • the portion of the simple twist wire mesh shown in FIG. 1 is formed by a plurality of strands of metal wire 101, 102, 103 and 104. Each wire forms a broken line so that it is entwined with a on its sides with the thread that precedes it and on the other side with the thread that follows it, thus forming diagonal stitches d.
  • FIG. 2 represents a mesh ply such as the ply 100 after the rows of stitches have been folded back on themselves around their median line of articulation.
  • the row formed by the threads 101 and 102 is folded around the line 105 then the row of stitches formed by the threads 102 and 103 is folded around the line 106 in the opposite direction and the row of stitches formed by the wires 103 and 104 is folded around the line 107 in the same direction as the row formed by the wires 101 and 102.
  • FIG. 2 If the structure of FIG. 2 is wound on itself, a roller 50 is obtained, part of which is shown in FIG. 3.
  • the external generatrices of this roller form, as shown in this figure, a succession of chevrons 53, with inner edges 51 and outer edges 52.
  • the device according to the invention shown in Figures 4 to 6 comprises a frame 1 disposed downstream of a single twist wire mesh installation, of which only the outlet drum 2 is shown in the drawings.
  • the output drum 2 rotates when this installation is in operation at a speed which is a function of the predetermined speed at which the mesh is produced and advances at the output of this installation.
  • the mesh is therefore provided at this speed by the outlet drum 2 in the form of an extended ply. This ply is guided laterally by means of two cheeks 3 mounted on the outlet drum 2.
  • the frame 1 carries immediately downstream of the drum 2 a bar 4 and downstream of this bar 4 a second bar 5.
  • the angles 6 are distributed along the bars 4 and 5 between the cheeks 3 at approximately regular intervals.
  • the distances which separate the different angles 6 from each other are substantially equal to a multiple of the diagonal of the mesh of the mesh which is to be rolled.
  • curved bars 14 are fixed to the upstream ends of the angles 9 and are partially wound around the drum 2.
  • the device also comprises a drive shaft 10 which carries a chain wheel 11 capable of cooperating via a chain 12 with another chain wheel 13 (FIG. 4) mounted on the shaft of the output drum 2.
  • a drive shaft 10 which carries a chain wheel 11 capable of cooperating via a chain 12 with another chain wheel 13 (FIG. 4) mounted on the shaft of the output drum 2.
  • Another shaft 16 is mounted in the frame 1 and carries a chain wheel 17.
  • This wheel 17 is provided to cooperate with a chain wheel 18 (FIG. 5) mounted on the shaft 10 at its end opposite to the wheel 11.
  • the wheel 18 therefore drives the wheel 17 and consequently the shaft 16 at a speed which depends on the ratio existing between the wheels 17 and 18.
  • a tensioning pinion 20 whose axis is capable of sliding in slides 21 mounted on the. frame 1 ensures the tension of the chain 19 for different ratios of the wheels 17 and 18. It is thus possible to adjust the ratio of the rotational speeds of the shaft 16 and the output drum 2 of the manufacturing installation wire mesh.
  • the shaft 16 carries a plurality of upstream chain wheels 24 which are arranged on this shaft so that each is located at the end of one of the angles 6.
  • articulated arms 27 at the ends of which downstream chain wheels 28 are mounted are rotatably mounted around bearings 31 concentric with the shaft 23 and consequently with chain wheels 26, these bearings being carried by the plates 39.
  • the arms 27 are secured to each other in rotation by a shaft 29 passing through the axes of the wheels 28.
  • levers 30 integral with the arms 27 are also capable of pivoting around the bearings 31 and carry at their end chain wheels which are located in the same planes as the wheels 28.
  • the arms 27 and the levers 30 which are integral with each other are arranged on the bearings 31 so that the wheels 28 and 32 are located in the same planes as the wheels 24, 25 and 26.
  • Another shaft 33 is carried by the frame 1 and supports chain wheels 34 each arranged in one of the planes defined by the wheels 24, 25, 26, 28 and 32.
  • the shaft 35 carries two cheeks 36 mounted on sliding bearings 37 and capable of being adjusted to lie in the same plane as the cheeks 3 of the output drum 2.
  • the cheeks 36 can be fixed in position by means of members 38 provided on the bearings 37.
  • each plate 39 has a groove 40 (FIG. 4), in which the axis of a chain wheel 41 can slide.
  • the axis of the wheel 41 is biased downwards, that is to say say on the side opposite to the wheels 24 and 28 relative to the wheels 25 and 26, by a spring 42, one end of which is mounted on the axis of the wheel 41 and the other end is integral with an extension 43 of the plate 39.
  • chains 44 pass on each of the sets of wheels 24, 25, 26, 28, 33 and 41. Between the wheels 24 and 25 on the one hand and the wheels 26 and 28 on the other hand, the strands 45 and 46 respectively of the chain form a V as can be seen in Figure 4.
  • the upstream strand 45 which is substantially in the extension of the upper edges of the angles 6 makes an angle of substantially 40 ° with the horizontal and the downstream strand 46 makes itself with the strand 45 an angle which is also substantially equal to 40 °.
  • shaft 5 is mounted movable in rotation relative to the frame 1 which can be actuated using a counterweight 47.
  • Fingers 48 are integral with the axis 5 so that they pivot with the latter when the counterweight 47 is tilted.
  • the reels 60 make it possible to wind the wires at the same time as the wire mesh.
  • These threads which facilitate the folding of the meshes and ensure their ordering therefore make it possible to perfect the herringbone configuration of the roller. Furthermore, they make it possible to maintain the meshes during the rotation of the roller and facilitate the correct unwinding thereof, during its use.
  • the reduction ratio between the wheels 11 and 13 the reduction ratio between the wheels 18 and 17 and the diameter of the wheels 24, it is possible to determine the ratio between the speed of feeding of the mesh at the level of the drum 2 and the longitudinal speed of the chain 44.
  • this ratio can be equal to 0.25.
  • the counterweight 47 being in a position such that the fingers 48 are erased relative to the angles 6, the mesh is brought on these angles to the strand 45 of the chains 44.
  • the device is in the configuration represented in FIG. 7 with strands 45 and 46 stretched and the axes of the wheels 41 at the bottom of the slides 40 where they are held by the traction of the springs 42.
  • the normal position for the arms 27 and the levers 30 is that shown in FIG. 7 in which the strands 45 and 46 form a V and in which the wheels 32 are separated from the arm 45.
  • the wire mesh is interrupted between the output drum 2 and the axis 5 and the fingers 48 are tilted in the position shown in FIG. 4. Consequently the part of the wire located downstream of the interruption completes the roller 50 while the upstream part is blocked by the fingers 48, so that the mesh can continue to be fed by the output drum 2 during the maneuver described below during which the roller 50 is removed from the device.
  • the set of arms 27 is tilted downwards in the position shown in FIG. 9, driving with it the shaft 29 and the chain wheels 28. In this movement, the levers 30 are also tilted and they drive the wheels 32 .
  • the strand 46 of the chain 44 becomes substantially horizontal while the wheel 32 deforms the strand 45 which thus causes the roller 50 to tip over onto the horizontal strands 46 from which it can be removed.
  • the arms 27 are then returned to the position they occupy in FIGS. 4 and 7.
  • the fingers 48 are again retracted so that a new grid of mesh comes to take place between the strands 45 and 46 where it begins to s' wrap as described with reference to figure 7.
  • the invention therefore provides a device for putting a single-twist mesh in a compact roll, without it being necessary to stop the installation for manufacturing this mesh during the handling of the finished rolls. It has also been found that it is thus possible to obtain a very high regularity of winding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Tyre Moulding (AREA)
  • Bathtub Accessories (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Coiling Of Filamentary Materials In General (AREA)
  • Forging (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Claims (13)

1. Vorrichtung zum Aufwickeln von Maschendraht-Viereckgeflecht, dessen Maschenreihen entlang ihrer Gelenkmittellinien aufeinander umgefaltet sind, wobei der Maschendraht der Vorrichtung mit einer vorgegeben Geschwindigkeit in Form einer gestreckten Bahn von der Austrittstrommel (2) einer Anlage zur Herstellung eines derartigen Maschendrahtes zuführbar ist und wobei die Vorrichtung Aufnahmeeinrichtungen zur Aufnahme des Maschendrahtes aufweist, die mit einer Längsgeschwindigkeit angetrieben werden, die kleiner als die vorgegebene Geschwindigkeit ist, und die in der Aufwickelposition eine V-Form aufweisen, dadurch gekennzeichnet, daß die Aufnahmeeinrichtungen durch zumindestens zwei Anordnungen von jeweils zwei Strängen (45, 46) eines kettenförmigen Bauelementes gebildet sind, daß die V-förmigen Aufnahme-einrichtungen entsprechend der Bildung des Wikkels verformbar sind, daß die Ebene jeder der Anordnungen im wesentlichen senkrecht zur Achse des Wickels (50) verläuft, daß die Anordnungen einen Abstand voneinander aufweisen, der im wesentlichen gleich einem Vielfachen der Diagonalen (d) der Masche des betreffenden Maschendrahtes ist und daß sich der Wickel auf den Anordnungen derart abstützt, daß jeder Strang am Boden eines Winkels (53) in Eingriff steht.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß Abstütz-Winkeleisen vorgesehen sind, die jeweils eine Kante (9) bilden, die in der Ebene jeder der V-förmigen Anordnungen nach oben gerichtet ist und sich dauernd zwischen der Austrittstrommel (2) der Anlage zur Herstellung des Maschendrahtes und dem Ende des in Bewegungsrichtung vorderen Schenkels (45) des V erstrecken.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Kante im wesentlichen in Verlängerung des dem Schenkel des V entsprechenden Stranges liegt..
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der in Bewegungsrichtung vordere Schenkel (45) des V zu Beginn der Bildung des Wickels im wesentlichen geradlinig ist und mit der Horizontalen einen Winkel in der Größenordnung von 40° bildet.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die beiden Schenkel (45, 46) des V zu Beginn der Bildung des Wickels zwischen sich einen Winkel in der Größenordnung von 40° bilden.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß jedes kettenförmige Bauelement durch eine endlose Kette gebildet ist, die um eine Vielzahl von Rädern gelegt ist, von denen die beiden ersten (24, 28) jeweils an Ende eines der Schenkel des V angeordnet sind, daß das dritte Rad (41) zwischen den beiden ersten Rädern derart angeordnet ist, daß die Kette im wesentlichen die V-Form annimmt und daß der Scheitelpunkt des V durch ein viertes und ein fünftes Klemmrad (25, 26) gebildet ist, die zwischen dem dritten Rad und jeweils einem der beiden ersten Räder angeordnet sind.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das dritte Rad (41) in der Ebene des V in einer Richtung beweglich ist, die zwischen den Richtungen der beiden Schenkel des V liegt.
8. Vorrichtung nach einem der Ansprüche 6 und 7, dadurch gekennzeichnet, daß ein sechstes Rücklaufrad (34) in der Ebene des V in einer Richtung angeordnet ist, die der der beiden ersten Räder (24, 28) bezüglich des dritten Rades (41) entgegengesetzt ist.
9. Vorrichtung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß eines der beiden ersten Räder (24) ein Antriebsrad ist.
10. Vorrichtung nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß das in Bewegungsrichtung hintere Rad (28) der beiden ersten Räder in der Ebene des V beweglich und in eine Position überführbar ist, in der es im wesentlichen in der Höhenlage der Spitze des V derart liegt, daß der entsprechende Schenkel (46) des V in wesentlichen horizontal verläuft.
11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß das bewegliche Rad (28) um den Mittelpunkt des in Bewegungsrichtung hinteren Klemmrades (26) schwenkbar ist.
12. Vorrichtung nach einem der Ansprüche 10 und 11, dadurch gekennzeichnet, daß das in Bewegungsrichtung vordere der beiden ersten Räder stationär ist und daß eine Auswerfrolle (32) in der Ebene des V derart vorgesehen ist, daß sie sich mit dem beweglichen Rad verschiebt und den dem stationären Rad entsprechenden Strang (45) in Richtung des beweglichen Rades verformt.
13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß die Auswerfrolle (32) eine Kettenrad ist.
EP80401836A 1979-12-19 1980-12-19 Vorrichtung zum Aufwickeln von Maschendraht-Viereckgeflecht Expired EP0031286B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80401836T ATE6994T1 (de) 1979-12-19 1980-12-19 Vorrichtung zum aufwickeln von maschendrahtviereckgeflecht.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7931109A FR2471938A1 (fr) 1979-12-19 1979-12-19 Dispositif d'enroulement pour grillage a simple torsion
FR7931109 1979-12-19

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP82111843A Division EP0085179A3 (de) 1979-12-19 1980-12-19 Vorrichtung zum Aufwickeln von Maschendraht-Viereckgeflecht
EP82111843.7 Division-Into 1982-12-20

Publications (2)

Publication Number Publication Date
EP0031286A1 EP0031286A1 (de) 1981-07-01
EP0031286B1 true EP0031286B1 (de) 1984-04-11

Family

ID=9232942

Family Applications (2)

Application Number Title Priority Date Filing Date
EP82111843A Ceased EP0085179A3 (de) 1979-12-19 1980-12-19 Vorrichtung zum Aufwickeln von Maschendraht-Viereckgeflecht
EP80401836A Expired EP0031286B1 (de) 1979-12-19 1980-12-19 Vorrichtung zum Aufwickeln von Maschendraht-Viereckgeflecht

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP82111843A Ceased EP0085179A3 (de) 1979-12-19 1980-12-19 Vorrichtung zum Aufwickeln von Maschendraht-Viereckgeflecht

Country Status (8)

Country Link
US (2) US4389025A (de)
EP (2) EP0085179A3 (de)
AT (1) ATE6994T1 (de)
CA (1) CA1167823A (de)
DE (2) DE3067488D1 (de)
ES (1) ES8200053A1 (de)
FR (1) FR2471938A1 (de)
IE (1) IE50491B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3136207C1 (de) * 1981-09-12 1983-01-13 Wafios Maschinenfabrik Wagner, Ficker & Schmid (GmbH & Co KG), 7410 Reutlingen Verfahren und Vorrichtung zum Herstellen von Rollen aus Drahtgeflecht
FR2518435A1 (fr) * 1981-12-22 1983-06-24 Gantois Installation pour l'obtention de rouleaux compacts de grillage simple torsion
DE19630925A1 (de) * 1996-07-31 1998-02-05 Rieter Ag Maschf Wickelvorrichtung
JP2002339650A (ja) * 2001-05-15 2002-11-27 Inaryo Technica Kk 開閉装置
DE202004002592U1 (de) * 2004-02-19 2004-04-29 Rkw Ag Rheinische Kunststoffwerke Werk Michelstadt Vorrichtung zum Aufwickeln von gewirkten Netzen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1662577A (en) * 1926-05-29 1928-03-13 United Eng Foundry Co Method of coiling material and apparatus therefor
US1959418A (en) * 1932-08-27 1934-05-22 Paper Patents Co Winder for sheet material
GB1109582A (en) * 1965-09-15 1968-04-10 Barnards Ltd A machine for winding up chain link fencing
US3532281A (en) * 1966-09-19 1970-10-06 Bekaert Pvba Leon Method for winding chain link fencing
FR1594975A (de) * 1968-12-10 1970-06-08
US3776482A (en) * 1972-06-06 1973-12-04 Corning Glass Works Winding apparatus
NL7506490A (nl) * 1975-05-30 1976-12-02 Bekaert Sa Nv Rol vierhoekig vlechtwerk, alsmede werkwijze ter vervaardiging van een dergelijke rol.
DE2544135C2 (de) * 1975-10-02 1982-11-25 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Herstellen von Schuppenbandrollen aus geschuppt übereinander abgelegten flachen Werkstücken
DE2650590C2 (de) * 1976-11-04 1985-06-20 ARBED S.A., Luxemburg/Luxembourg Verfahren und Vorrichtung zum Herstellen einer Geflechtrolle
US4146188A (en) * 1977-10-31 1979-03-27 E. Fogarty & Company Limited Method and apparatus for forming a fibrous cylindrical element
US4353512A (en) * 1981-01-14 1982-10-12 Rohrbacher Herbert E Apparatus for rolling chain link fence

Also Published As

Publication number Publication date
FR2471938B1 (de) 1984-08-10
ATE6994T1 (de) 1984-04-15
EP0085179A3 (de) 1983-08-24
ES497892A0 (es) 1981-11-01
DE3067488D1 (en) 1984-05-17
DE31286T1 (de) 1983-04-14
US4389025A (en) 1983-06-21
EP0085179A2 (de) 1983-08-10
IE802694L (en) 1981-06-19
EP0031286A1 (de) 1981-07-01
IE50491B1 (en) 1986-04-30
ES8200053A1 (es) 1981-11-01
FR2471938A1 (fr) 1981-06-26
CA1167823A (fr) 1984-05-22
US4522345A (en) 1985-06-11

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