EP0614439B1 - Spray device for dispensing a relatively high viscosity composition - Google Patents

Spray device for dispensing a relatively high viscosity composition Download PDF

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Publication number
EP0614439B1
EP0614439B1 EP19930901805 EP93901805A EP0614439B1 EP 0614439 B1 EP0614439 B1 EP 0614439B1 EP 19930901805 EP19930901805 EP 19930901805 EP 93901805 A EP93901805 A EP 93901805A EP 0614439 B1 EP0614439 B1 EP 0614439B1
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EP
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Grant
Patent type
Prior art keywords
composition
characterized
valve
millipascal
dispensing
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
EP19930901805
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German (de)
French (fr)
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EP0614439A1 (en )
Inventor
Jean-Pierre Yquel
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L'Oreal SA
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L'Oreal SA
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00Containers or packages with special means for dispensing contents
    • B65D83/14Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44Valves specially adapted therefor; Regulating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00Containers or packages with special means for dispensing contents
    • B65D83/14Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/32Dip-tubes

Abstract

The device (D) comprises a can (1) for use with its nozzle end (2) uppermost, containing the composition (C) and a pressurized gaseous propellant (B) acting directly on the composition, a dispensing valve (5) being placed in the upper portion of the can on an orifice (3) thereof, while a tube connected to the valve extends to the base of the can. The composition (C) to be dispensed has a viscosity (measured on the Brookfield DV III viscometer, needle n° 7) in the range of 4,000 to 10,000 millipascals.seconds, preferably from 6,000 to 8,000 millipascals.seconds, for a speed of 100 revolutions/minute and of 30,000 to 150,000 millipascals.seconds, preferably from 50,000 to 120,000 millipascals.seconds, for a speed of 2.5 revolutions/minute; the tube consists of a semi-capillary tube (18) having an inner diameter (c^-) of between 0.7 and 1.5 mm.

Description

  • L'invention est relative à un dispositif aérosol pour distribuer une composition à viscosité relativement élevée, en particulier un gel ou une émulsion, du genre de ceux qui comprennent un bidon, destiné à être utilisé tête en haut, contenant la composition et un agent propulsif gazeux sous pression agissant directement sur la composition, une valve de distribution étant placée sur une ouverture en partie haute du bidon, tandis qu'un tube plongeur relié à la valve s'étend jusqu'au voisinage du fond du bidon. The invention relates to an aerosol device for dispensing a relatively high viscosity composition, in particular a gel or an emulsion, of the type which comprise a container, for use head up, containing the composition and a propellant gas pressure acting directly on the composition, a dispensing valve being placed over an opening in the upper part of the can, while a dip tube connected to the valve extends to the vicinity of the can bottom.
  • US-A-3 541 581 montre, en particulier à la figure 5, un dispositif aérosol de ce genre, dans lequel aucune séparation physique n'est prévue entre l'agent propulsif gazeux sous pression et la composition à distribuer. US-A-3,541,581 shows, in particular to Figure 5, an aerosol device of this kind, in which no physical separation is provided between the gaseous propellant under pressure and the composition to be dispensed.
  • Un tel dispositif aérosol ne donne pas entièrement satisfaction lorsque la viscosité de la composition à distribuer est relativement élevée. Such aerosol device is not entirely satisfactory when the viscosity of the composition to be delivered is relatively high. FR-A-2 223 452 souligne les difficultés et les problèmes de fonctionnement rencontrés dans une telle situation. FR-A-2,223,452 emphasizes the difficulties and operational problems encountered in such a situation. La composition visqueuse ne s'écoule pas régulièrement dans le tube plongeur et des phénomènes de cavitation avec perte du gaz propulsif à travers la valve de distribution se produisent. The viscous composition does not flow regularly in the dip tube and cavitation with loss of propellant gas through the dispensing valve occurs. Il en résulte une diminution sensible du taux de vidange (rapport de la quantité maximale de composition distribuée par le dispositif à la masse totale de cette composition introduite dans le bidon). This results in a significant decrease in the discharge rate (ratio of the maximum amount of composition delivered by the device to the total weight of the composition introduced into the container).
  • Pour remédier à de tels inconvénients, FR-A-2 223 452 propose des compositions de gel stable à moussage différé ayant un seuil d'écoulement relativement faible, ce qui correspond à une viscosité également relativement faible. To remedy such drawbacks, FR-A-2,223,452 provides a stable gel with delayed foaming compositions having a relatively low yield point, which corresponds to a relatively low viscosity also.
  • Cette solution, qui écarte les compositions plus visqueuses présentant pourtant un intérêt important, notamment en ce qui concerne les gels à raser automoussants, vise à favoriser l'écoulement de la composition dans le tube plongeur et dans la valve pour réduire les phénomènes de cavitation. This solution, which removes the more viscous compositions nevertheless of significant interest, particularly with regard to self-foaming shaving gels, aims to promote the flow of the composition in the dip tube and into the valve to reduce cavitation.
  • Une telle approche se comprend car il est connu que, pour favoriser l'écoulement d'un produit dans un ensemble de tubes et de canalisations, il convient généralement soit de diminuer la viscosité du produit en conservant des sections de passage constantes, soit d'augmenter les sections de passage si l'on ne peut agir sur la viscosité du produit. Such an approach is understandable because it is known that, to promote the flow of a product in a set of tubes and pipes, it is generally appropriate to either decrease the viscosity of the product retaining sections constants passage, either of increase the flow sections if it can act on the product viscosity.
  • L'invention a pour but, surtout, de fournir un dispositif aérosol du genre défini précédemment qui permette d'améliorer l'écoulement de la composition en évitant ou tout au moins en réduisant les phénomènes de cavitation et en améliorant le taux de vidange sans avoir à réduire la viscosité de la composition à distribuer. The invention aims, in particular to provide an aerosol device of the type defined above which enables to improve the flow of the composition while avoiding or at least reducing cavitation and enhancing the drainage rate without to reduce the viscosity of the composition to be dispensed.
  • Selon l'invention, un dispositif aérosol du genre défini précédemment est caractérisé par le fait que la composition à distribuer a une viscosité (mesurée sur viscosimètre Brookfield DV III, aiguille n° 7) située dans la gamme de 4 000 à 10 000 millipascals.secondes, de préférence de 6 000 à 8 000 millipascals.secondes, pour une vitesse de 100 tours/minute, et de 30 000 à 150 000 millipascals.secondes, de préférence de 50 000 à 120 000 pascals.secondes, pour une vitesse de 2,5 tours/minute, et que le tube plongeur est constitué par un tube semi-capillaire dont le diamètre intérieur est compris entre 0,7 et 1,5 mm et de préférence entre 1,3 et 1,5 mm. According to the invention, an aerosol device of the kind defined above is characterized in that the composition to be dispensed has a viscosity (measured on Brookfield DV III viscometer, spindle # 7) in the range of 4000 to 10,000 millipascal. seconds, preferably from 6 000 to 8 000 millipascals.secondes, for a speed of 100 revolutions / minute, and from 30 000 to 150 000 millipascals.secondes, preferably from 50 000 to 120 000 pascal seconds, at a speed of 2.5 revolutions / minute, and that the inner tube consists of a semi-capillary tube whose internal diameter is between 0.7 and 1.5 mm and preferably between 1.3 and 1.5 mm.
  • L'invention, d'une manière surprenante et inattendue, permet d'améliorer les conditions d'écoulement d'un produit visqueux, du point de vue de la régularité de cet écoulement et de la diminution ou même la suppression des phénomènes de cavitation, en prévoyant une section de passage réduite, contrairement à ce que l'on pouvait penser. The invention, surprisingly and unexpectedly improves the flow conditions of a viscous product, from the perspective of the regularity of this flow and the reduction or even elimination of cavitation, providing a flow area reduced, contrary to what one might think.
  • Des essais effectués avec un dispositif aérosol conforme à ce mode de réalisation ont permis d'obtenir, dans certains cas, un taux de vidange de plus de 80 % lors d'une distribution en continu et dans tous les cas, on améliore le taux de vidange, en comparaison avec un dispositif équipé d'un même type de valve mais avec un tube plongeur normal dont le diamètre est supérieur aux valeurs indiquées ci-dessus, d'au moins 10 % en absolu. Experiments with an aerosol device according to this embodiment have achieved, in some cases, a discharge rate of over 80% on a distribution continuously and in all cases, the rate improves emptying, in comparison with a device equipped with the same type of valve but with a normal dip tube whose diameter is greater than the values ​​indicated above, at least 10% in absolute.
  • La valve est munie d'une queue qui comporte un logement cylindrique dans lequel est engagée l'extrémité supérieure du tube semi-capillaire dont la surface extérieure est en appui contre la surface interne du logement. The valve is provided with a tail which includes a cylindrical housing in which is engaged the upper end of the semi-capillary tube whose outer surface bears against the inner surface of the housing.
  • L'invention consiste, mises à part les dispositions exposées ci-dessus, en un certain nombre d'autres dispositions dont il sera plus explicitement question ci-après à propos d'exemples de réalisation décrits avec référence au dessin ci-annexé, mais qui n'est nullement limitatif. The invention consists, apart from the provisions disclosed above, a number of other arrangements which will be explained in more detail below in connection with the embodiments described with reference to the accompanying drawings, but is in no way limiting.
  • La figure 1, de ce dessin, est une vue en coupe verticale d'un dispositif aérosol conforme à un premier mode de réalisation de l'invention, représenté en cours de distribution. Figure 1, this drawing is a vertical sectional view of an aerosol device according to a first embodiment of the invention, shown being dispensed.
  • En se reportant à la figure 1 du dessin, on peut voir un dispositif aérosol D pour distribuer une composition C à viscosité relativement élevée. Referring to Figure 1 of the drawing, there is shown a spray device D for dispensing relatively high viscosity composition C. La composition C est constituée, notamment, par un gel à raser auto-moussant ou par une émulsion épaissie. Composition C is constituted in particular by a shaving gel self-foaming or by a thickened emulsion.
  • La viscosité de la composition C, mesurée sur viscosimètre Brookfield DV III, aiguille n° 7, se situe dans la gamme de 4 000 à 10 000 millipascals.secondes, de préférence de 6 000 à 8 000 millipascals.secondes, mesurée à une vitesse de 100 tours/minute et de 30 000 à 150 000 millipascals.secondes, de préférence de 50 000 à 120 000 millipascals.secondes, mesurée à une vitesse de 2,5 tours/minute. The viscosity of Composition C, as measured on Brookfield DV III viscometer, spindle # 7, is in the range of 4000 to 10,000 millipascals.secondes, preferably from 6000 to 8000 millipascals.secondes measured at a speed of 100 revolutions / minute and of 30,000 to 150,000 millipascals.secondes, preferably from 50 000 to 120 000 millipascals.secondes measured at a speed of 2.5 revolutions / minute.
  • Le dispositif D comprend un bidon 1 destiné à être utilisé avec la tête 2 en haut. The device D comprises a container 1 for use with the head 2 above. Le bidon 1 contient la composition et un agent propulsif gazeux B qui agit directement sur la composition C. Autrement dit, aucune séparation physique n'est prévue entre l'agent propulsif gazeux B et la composition C. L'agent propulsif est avantageusement constitué par un gaz sous pression appartenant à l'ensemble formé par : air, azote, ou un propulseur liquéfiable très peu soluble dans la composition tel que le 2-H-heptafluoropropane, plus connu sous la dénomination HCFC 227. On évite d'utiliser un gaz liquéfié susceptible de se disssoudre dans la composition. The container 1 contains the composition and a gaseous propellant B which acts directly on the composition C. In other words, no physical separation is provided between the gaseous propellant B and composition C. The propellant is advantageously constituted by a pressurized gas belonging to the group formed by: air, nitrogen, or a liquefiable propellant very slightly soluble in the composition such as 2-H-heptafluoropropane, better known under the name HCFC 227. it avoids using a gas liquefied likely to disssoudre in the composition.
  • La tête 2 du bidon 1 a une forme tronconique et est munie, à son extrémité haute d'une ouverture 3 à bord roulé. The head 2 of the can 1 has a frustoconical shape and is provided at its top end with an opening 3 to the rolled edge. Une coupelle de valve 4 est sertie sur le bord de cette ouverture et une valve de distribution 5 est fixée au centre de la coupelle 4. La valve 5 comprend un corps de valve 6 autour duquel est sertie la partie centrale de la coupelle 4. A cup-valve 4 is crimped onto the edge of this opening and a dispensing valve 5 is fixed at the center of the cover 4. The valve 5 comprises a valve body 6 which is crimped around the central portion of the cup 4.
  • Une rondelle élastique 7 d'étanchéité est serrée entre l'extrémité frontale du corps de valve 6 et un rebord de la partie centrale de la coupelle 4. Une tige 8 peut coulisser axialement dans le corps de valve 6, cette tige faisant saillie vers l'extérieur. A spring washer 7 seal is clamped between the front end of the valve body 6 and a flange of the central portion of the cup 4. A rod 8 is axially slidable in the valve body 6, this pin projecting towards the 'outside. La tige 8 comporte un canal central 9 débouchant vers le haut et dont l'extrémité interne est fermée axialement ; The rod 8 has a central channel 9 opening upwardly and the inner end is closed axially; ce canal 9 communique par des passages radiaux 9 a (ou orifices de valve) avec une gorge périphérique 10. Le bord circulaire interne de la rondelle 7 est engagé dans cette gorge 10. Lorsque la tige 8 n'est pas enfoncée, la rondelle 7 ferme le ou les passages 9 a orientés radialement et isole l'intérieur du bidon 1 du canal 9. Par contre, lorsque la tige 8 est enfoncée, la rondelle 7 fléchit dans sa partie centrale et permet une communication entre l'intérieur du bidon 1 et le canal 9, comme montré sur la figure 1. this channel 9 communicates via radial passages 9a (or valve orifices) with a peripheral groove 10. The inner circular edge of the washer 7 is engaged in the groove 10. When the rod 8 is not pressed, the washer 7 closes the passageway 9 a radially oriented and isolates the interior of the can 1 of the channel 9. against, when the rod 8 is pressed, the ring 7 bends at its central portion and allows communication between the interior of the can 1 and the channel 9, as shown in Figure 1.
  • La tige 8 est rappelée en position de fermeture vers le haut par un ressort en hélice 11 disposé entre le fond du logement prévu dans le corps 6 et la tige 8. L'extrémité supérieure de la tige 8 est surmontée d'un bouton-poussoir 12 équipé d'un bec distributeur 13. The stem 8 is urged towards the closed position upwards by a helical spring 11 arranged between the bottom of the housing provided in the body 6 and the rod 8. The upper end of the rod 8 is surmounted by a pushbutton 12 equipped with a dispensing spout 13.
  • A sa partie inférieure, le corps de valve 6 est prolongé vers le bas par une queue de valve 14 à l'intérieur de laquelle est prévu un logement cylindrique 15 limité, vers le haut, par un épaulement radial intérieur 16. Un passage 17 axial de diamètre relativement important, notamment supérieur à 1 mm, fait communiquer le logement 15 avec la chambre dans laquelle peut se déplacer la tige 8. At its lower part, the valve body 6 is extended downwardly by a valve stem 14 within which is provided a cylindrical housing 15 limited upwardly by an internal radial shoulder 16. An axial passageway 17 of relatively large diameter, especially greater than 1 mm, the housing 15 communicates with the chamber in which can move the rod 8.
  • Un tube plongeur 18 semi-capillaire est engagé par son extrémité supérieure dans le logement 15 et s'étend vers le bas jusqu'au voisinage du fond 19 du bidon 1. A semi-capillary tube plunger 18 is engaged by its upper end into the housing 15 and extends downwardly to the vicinity of the bottom 19 of the can 1.
  • Le diamètre intérieur e du tube 18 est compris entre 0,7 mm et 1,5 mm et de préférence entre 1,3 et 1,5 mm. The inner diameter e of the tube 18 is between 0.7 mm and 1.5 mm and preferably between 1.3 and 1.5 mm. Cette section de diamètre réduit se trouve en amont des orifices de valve 9 a. This reduced-diameter portion is located upstream of the valve ports 9a.
  • D'une manière surprenante, avec des compositions dont la viscosité (mesurée sur viscosimètre Brookfield DV III, aiguille n o 7) se trouve dans la gamme suivante : de 4 000 à 10 000 millipascals.secondes, de préférence de 6 000 à 8 000 millipascals.secondes, à une vitesse de 100 tours/minute et de 30 000 à 150 000 millipascals.secondes de préférence de 50 000 à 120 000 millipascals.secondes, à une vitesse de 2,5 tours/minute, le dispositif distributeur équipé du tube semi-capillaire 18 permet, en appuyant sur le bouton-poussoir 12, comme illustré sur la figure 1, une distribution régulière du produit par le bec 13, et des pertes réduites d'agent propulsif gazeux. Surprisingly, with compositions having a viscosity (measured on Brookfield DV III viscometer, needle No. 7) is in the following range: from 4 000 to 10 000 millipascals.secondes, preferably from 6 000 to 8 000 millipascals.secondes at a speed of 100 revolutions / minute and of 30,000 to 150,000 millipascals.secondes preferably from 50 000 to 120 000 millipascals.secondes at a speed of 2.5 revolutions / minute, the dispenser device equipped with the semi-capillary tube 18 allows, by pressing the pushbutton 12 as illustrated in Figure 1, an even distribution of the product through the spout 13, and reduced losses of gaseous propellant.
  • Le taux de vidange obtenu lors d'une distribution en continu, dans certains cas, peut être supérieur à 80 %. The drainage rate achieved during a continuous distribution, in some cases, may be greater than 80%. Le taux de vidange qui est obtenu avec le même type de valve mais avec un tube plongeur normal dont le diamètre interne est nettement supérieur à 1,5 mm peut être inférieur en absolu de 10 points (taux d'environ 70 %). Drain the rate that is obtained with the same type of valve but with a normal dip tube whose internal diameter is significantly greater than 1.5 mm may be less in absolute 10 points (rate of approximately 70%).
  • La pression de l'agent propulsif au début de la pulvérisation, dans le cas d'un gaz comprimé, est généralement comprise entre 5 et 10 bars, cette pression étant de préférence égale à 7 bars. The pressure of the propellant at the beginning of the spraying, in the case of a compressed gas, is generally between 5 and 10 bar, this pressure preferably being equal to 7 bar. Dans le cas du 2-H-heptafluoropropane (agent propulsif liquéfié), la pression est d'environ 3,5 bars. In the case of 2-H-heptafluoropropane (liquefied propellant), the pressure is about 3.5 bar.
  • Avec le dispositif de l'invention, et les gammes de viscosité indiquées ci-dessus, le débit initial de composition est compris entre 1 g/s et 6,5 g/s, et de préférence entre 2 g/s et 4 g/s, bornes incluses. With the device of the invention, and the viscosity ranges given above, the initial composition flow rate is between 1 g / s and 6.5 g / s, and preferably between 2 g / sec to 4 g / s inclusive.
  • Le débit final de composition, à environ 80 % de la vidange, reste supérieur à 1 g/s. The final rate of composition, about 80% of the drain remains greater than 1 g / s.
  • Les essais de distribution d'une composition à viscosité relativement élevée telle que définie précédemment, avec le dispositif de l'invention, ont permis de restituer un produit correct et avec un taux de vidange satisfaisant, malgré de fortes variations de viscosité observées en fonction de la vitesse. Tests distribution of relatively high viscosity composition as defined above, with the device of the invention, have helped restore a correct product and satisfactory emptying rate, despite strong viscosity variations depending on speed.

Claims (5)

  1. Aerosol device for dispensing a composition with relatively high viscosity, in particular a gel or an emulsion, comprising a can intended to be used with the head upwards, containing the composition and a pressurized gaseous propellant agent acting directly on the composition, a dispensing valve being placed at the upper part of the can on an opening of this can, while a dip-tube connected to the valve extends as far as the vicinity of the bottom of the can, characterized in that the composition (C) to be dispensed has a viscosity (measured on a Brookfield DV III viscometer, needle no. 7) lying in the range of 4000 to 10,000 millipascal.second, preferably of 6000 to 8000 millipascal.second, for a speed of 100 revolutions/minute and of 30,000 to 150,000 millipascal.second, preferably of 50,000 to 120,000 millipascal.second, for a speed of 2.5 revolutions/minute, and in that the dip-tube consists of a semi-capillary tube (18) whose internal diameter (e) lies between 0.7 and 1.5 mm.
  2. Device according to Claim 1, characterized in that the internal diameter of the semi-capillary tube (18) lies between 1.3 and 1.5 mm.
  3. Device according to Claim 1 or 2, characterized in that the valve (5) is fitted with a tail (14) which includes a cylindrical housing (15) in which the upper end of the capillary tube (18) is engaged, the outer surface of which bears against the inner surface of the housing (15).
  4. Device according to one of the preceding claims, characterized in that its emptying ratio is at least 80%.
  5. Device according to one the preceding claims, characterized in that the pressure of the propellant agent in the case of a compressed gas lies between 5 and 10 bar, while in the case of 2-H-heptafluoropropane, the pressure is approximately 3.5 bar, and in that the initial composition delivery rate lies between 1 g/s and 6.5 g/s.
EP19930901805 1991-12-02 1992-12-01 Spray device for dispensing a relatively high viscosity composition Expired - Lifetime EP0614439B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9114915 1991-12-02
FR9114915A FR2684358B1 (en) 1991-12-02 1991-12-02 Aerosol device for dispensing a composition has relatively high viscosity.
PCT/FR1992/001117 WO1993011058A1 (en) 1991-12-02 1992-12-01 Spray device for dispensing a relatively high viscosity composition

Publications (2)

Publication Number Publication Date
EP0614439A1 true EP0614439A1 (en) 1994-09-14
EP0614439B1 true EP0614439B1 (en) 1995-07-12

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US (1) US5467902A (en)
EP (1) EP0614439B1 (en)
DE (2) DE69203459D1 (en)
ES (1) ES2074388T3 (en)
FR (1) FR2684358B1 (en)
WO (1) WO1993011058A1 (en)

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ES2074388T3 (en) 1995-09-01 grant
FR2684358A1 (en) 1993-06-04 application
FR2684358B1 (en) 1995-01-20 grant
WO1993011058A1 (en) 1993-06-10 application
US5467902A (en) 1995-11-21 grant
EP0614439A1 (en) 1994-09-14 application
DE69203459D1 (en) 1995-08-17 grant
DE69203459T2 (en) 1996-04-11 grant

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