EP0494559A1 - Deckel, geeignet zur Erstellung eines dichten Behälters zum Aufbewahren von Produkten wie Nahrungsmitteln - Google Patents

Deckel, geeignet zur Erstellung eines dichten Behälters zum Aufbewahren von Produkten wie Nahrungsmitteln Download PDF

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Publication number
EP0494559A1
EP0494559A1 EP91403453A EP91403453A EP0494559A1 EP 0494559 A1 EP0494559 A1 EP 0494559A1 EP 91403453 A EP91403453 A EP 91403453A EP 91403453 A EP91403453 A EP 91403453A EP 0494559 A1 EP0494559 A1 EP 0494559A1
Authority
EP
European Patent Office
Prior art keywords
cover
covers
edge
orifice
coverage area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91403453A
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English (en)
French (fr)
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EP0494559B1 (de
Inventor
Michel Bastien
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.)
JANKOVIC, MILAN
Original Assignee
Jankovic Milan
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Filing date
Publication date
Application filed by Jankovic Milan filed Critical Jankovic Milan
Publication of EP0494559A1 publication Critical patent/EP0494559A1/de
Application granted granted Critical
Publication of EP0494559B1 publication Critical patent/EP0494559B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2038—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum with means for establishing or improving vacuum

Definitions

  • the present invention relates to a cover adapted to produce a sealed enclosure between itself and an article capable of supporting or containing a product to be isolated from the ambient environment, said cover comprising means making it possible to create a vacuum in said enclosure .
  • the cover according to the invention proposes to remedy these drawbacks in a simple and effective manner, an aim which is achieved in that said cover is characterized in that its face intended to be turned towards said article, called “inner face” comprises, or is associated with, a layer of sealing material of suitable geometry forming a "cover area", said cover being adapted to be temporarily secured to said article by simple laying, as the case may be, on one side substantially flat or on the orifice of said article, to form an uninterrupted contact zone with continuous interposition of said layer of sealing material, and by creation of said depression in the space delimited between said article and said cover, the zone of covering of said layer of sealing material being such that it extends over at least 2 mm on one side of the center line of the contact zone between said cover and said article, and over at least 4 mm from the other side of the said center line.
  • the same cover can be adapted to at least two articles of the same geometry but of slightly different dimensions.
  • the inner face of the cover is substantially flat and adapted to be placed on the orifice of a container while in a second embodiment, its inner face is concave with a substantially flat free edge. suitable to be placed on a flat support.
  • a third embodiment making it possible to reduce the thickness of the cover while retaining good rigidity, it is stepped and its internal surface is adapted to be placed on the orifice of a container or even on a support. flat, if the steps create a sufficient volume between the cover and said flat support.
  • the layer of sealing material may cover the entire inner face of the cover or cover only a zone limited in width of said inner face from the free edge of said cover.
  • the cover is made of a slightly deformable material under the effect of the vacuum created inside the enclosure.
  • the means for creating the vacuum in the enclosure advantageously consist of a non-return device mounted on, or in, an orifice provided in said cover and capable of being temporarily connected to a vacuum pump.
  • the non-return device may consist of a valve formed from a sheet of relatively deformable material adapted to be applied to said orifice and to plug it, when the face of said sheet opposite to the orifice is not subjected to any effort of depression, said sheet comprising a gripping stud and at least one perforation not aligned with said orifice, but nevertheless close to the latter, means being provided for immobilizing said valve on the cover and for serving as a guide for a tip belonging to, or connected , to a suction pump, said nozzle having a diameter such that the perforation or perforations of the sheet of material per se (in) t capped (s), so that the vacuum created by the pump lifts the sheet portion that cap the tip and communicates the perforation (s) and the orifice of the cover.
  • the end of the stud opposite the sheet may provide a flat surface in alignment with the upper surface, also flat, of the means for immobilizing the valve on the cover and, once the vacuum has been established in the container, sticks an adhesive sheet on the alignment of surfaces.
  • the peeling off of the sheet exerts a pull on the nipple and, consequently, the lifting of the valve and the reestablishment of atmospheric pressure in the container.
  • the dimensions of said covers and their coverage areas being calculated such that, when the covers of said set are aligned coaxially, the straight line passing through the outer edge of the coverage area of the first cover and through the inner edge of the coverage area cover of the third cover, passes substantially in the middle of the cover area of the second cover, while the straight line passing through the outer edge of the cover area of the second cover and through the inner edge of the cover area of the possible fourth cover passes substantially in the middle of the coverage area of said third cover, and so on.
  • a set of covers will be used, each comprising at least two steps separated by a folding zone, the dimensions of said covers, their steps and their folding zones being calculated such that, when the covers of said set are aligned coaxially, each folding zone of a cover is plumb with the middle of a step belonging to the size cover immediately superior.
  • the cover 1 according to the invention is shaped (by cutting, molding or forging) in the form of a disc, smooth on both sides, in a plastic or a metal for use food; its upper face can be decorated or printed while its lower face intended to come into contact with the edge of a container 3 or 4 to close it, is provided with a layer of sealing material 2 formed of a coating of a chemically stable, odorless, flexible but very long-lasting elastomeric resin, or a glued or removable seal having the same characteristics.
  • This disc could be absolutely rigid but, preferably, it has a good elasticity which allows it, under the constraint of the vacuum, to match the possible deformations of the edge of a container.
  • This disc is pierced, advantageously in its center, with an orifice 7 allowing the adaptation of a valve V of the air chamber valve type, mounted upside down.
  • This valve V consists of a short valve body 18, threaded at its two ends and having over its length a nut-shaped bulge 16 for fixing.
  • the upper threaded end is designed to be introduced, with a certain clearance, into the housing 30 of the lower nozzle 20 of a vacuum pump 24, and to receive a plug 36 ( Figure la) as soon as the pump is removed; the lower threaded end of the body 18 allows the valve V to be fixed by means of a nut 9 bearing on a washer 8 and compressing an O-ring or flat 12 on the swollen nut-shaped part 16 of the valve body.
  • This valve body 18 is generally neckline in steel or brass and then tinned or nickel-plated and includes, inside, a replaceable valve mechanism 34 consisting of a rigid, hollowed-out static assembly 17 screwed into the valve body 18 by means of a threaded bridge 11, the seal 33 placed on the seat 15 ensuring the seal between the mechanism 34 and the valve body.
  • a non-return valve 31 with a stamped pin 10 ensures, using its seal 32, the opening and closing of the orifice of the assembly 17.
  • the valve 31 does not include a return spring on the lower end of its spindle 10 while the known valves of the same type are all provided with springs whose release pressure is generally between 1.8.105 and 5.105 Pa; in fact, the manual pump 24 presently used only allows a vacuum of approximate force of 0.9 ⁇ 10 -5 Pa and could not, therefore, actuate the valve 31 if it were provided with such springs. However, a weak spring has been tried but has brought nothing more functionally, except an additional cost and a difficulty in cleaning the valve device. On the other hand, the valve being always used vertically, the own weight of the valve 31 is sufficient for it to assume its function from the first pump strokes (being then helped by the increasing force of the vacuum).
  • valve V originally designed to bring air under pressure into an enclosure, will therefore imperatively be mounted upside down on the cover 1, since its current use is reversed.
  • This inversion has, moreover, a great advantage concerning the return to atmospheric pressure to reopen a container, insofar as it is possible to introduce a pointed object (fork tooth, nail, knife tip, etc.) between the valve body 18 and the valve 31 to make the latter limp which then lets air pass to the container 3 or 4.
  • valve system or valve, or other known non-return system of the type comprising in particular: a spring-loaded valve, with vertical lift, hinged leaf, needle, ball, membrane, or any shutter of specific shape and which it is not possible to access by means shutter so that it lets air pass
  • the cover 1 will then comprise either a hole 6 of very small diameter, located as close as possible to the valve and closable by a patch or an adhesive tab 5, or by a screw needle or other 14 whether or not provided with a sealing means 13; the reopening of the container is then obtained by simple detachment of the pellet or the tab 5 or by loosening the screw 14.
  • 1 has a usable radius over a length L of approximately 65 mm, it makes it possible to seal a good thirty circular containers whose wall thickness would be 1 mm and whose diameter would vary in steps of 2 mm. It can also be seen in this figure that the cover can close a container 4 having an oblique edge as well as a container 3 with a straight edge.
  • the pump 24 which is a manual vacuum pump is of the reverse pump bicycle pump type. It consists of a cylindrical body 23 in which moves a piston 22 provided with a lip seal 29 when it is actuated by its rod 27 folded at right angles for gripping. This rod slides in a hole 26 made in the upper end-piece 25 pierced with another hole 28 to allow the air discharged by the piston 22 and the seal 29 to escape; the lower end piece 20 of the pump 24 is also pierced with a hole 21 and its housing 30 is of diameter slightly greater than the outside diameter of the end of the valve V on which it is strongly applied with its seal 19 during placing under empty container.
  • the pump can be connected to the valve V by screwing its lower nozzle 20 or connected to said valve by a hose. Any other type of vacuum pump than that described could be used, whether manual or electric.
  • the cover according to the invention is shaped in the shape of a bell (other hollow shapes being of course achievable) in a transparent material, preferably of the glass type, chemically stable material. It comprises a non-return valve valve V and it is provided with a layer of sealing material covering not entirely its lower surface, but being in the form of a recessed seal bonded 2A on its edge according to the detail of Figure 2A called to seal between the bell 1 'and any rigid or very slightly deformable food support 41 having at least one smooth surface.
  • the seal 2A could also be removable or molded on the edge of the cover 1 ′.
  • the support 41 can be a special support, but most often it will be a dish, a plate, a pie pan, belonging to the usual dishes of the user, or even, a plate of enamel oven, etc.
  • a seal 2B can be provided interposed between said cover 1 ′ and the support 41. This seal 2B can be removable or integral with the support 41. It is therefore easy to understand that, in both cases, and when the non-return valve valve V is actuated, the cover 1 ′ becomes integral with the support 41.
  • the cover 1 ′′′ according to the invention is obtained by molding or foundry. Its non-return valve V is inserted into it, and its upper face as well as its periphery can, therefore, have reinforcements 42 and 43.
  • the lower face of the cover and its sealing means 2 have characteristics similar to those previously described in connection with FIG. 1. This embodiment makes it possible to reduce the price of the cover by reducing the weight of raw material.
  • FIG. 4 shows in schematic section the same cover in three different sizes 1A, 1B, 1C.
  • the smallest 1A is molded at the same time as the body 18 of the valve V (or other non-return system) in an advantageously transparent material, with the exception of its valve 48 which is attached to it.
  • This valve 48 is a kind of head rivet 45 usually obtained by stamping or turning. It slides in the hole 50 made with clearance (to let the air pass) during the molding of the body of the non-return device V, its head 45 being housed in a countersink 46 formed with clearance and being of conical shape to ensure sealing with the orifice of the hole 50, and to facilitate the passage of a pointed object between it and the body 18 of valve V for the return to atmospheric pressure of a container.
  • a seal 51 may be provided between the head 45 and the seat against which it comes to rest.
  • the valve 48, the foot of which is also housed in a counterbore 49 has a stop means 47 such as a lug, a nut, a deformation, so that it cannot escape from the hole 50. It is advantageously shaped in a dense metal, for example tinned or silvery copper. Driven by the action of a vacuum pump not shown, in the hole 50 between the two counterbores 46 and 49 forming housings, it allows under the effect of its mass, then combined with the force of the vacuum, to open or to close the hole 50.
  • the main quality of the lid is its adaptability to all kinds of containers and it may be, for example, possible to cap a bottle with a lid that can cap a pot, the difference in dimensions between the two is really disproportionate and it goes without saying that it is preferable to be able to have a set of covers according to the invention of different cover surfaces.
  • the covers according to the invention may be provided with seals (or elastomeric coating) cut at a given pitch such that there is no loss of material.
  • the external diameter of the annular seal 2C1 will be equal to the internal diameter of the annular seal 2C3 and the external diameter of the annular seal 2C2 will be equal to the internal diameter of an annular seal 2C4, not shown, belonging to a cover 1D not shown of larger size. at 1C.
  • This will lead to a set of covers of increasing size according to a VW step.
  • the joint or the coating 2C2 has a width of 24 mm, it will probably be usable on approximately 20 mm and will be able to cover ten containers whose edges will be 2 mm thick and whose diameters will vary by 2 mm pitch, i.e.
  • the cover 1B makes it possible to cover very widely, on each side of the point Y, the quine containers would know neither by the cover A according to the dimension X nor by the cover C according to the side Z.
  • the pitch VW is for example 12 mm
  • the covers and their seals (or coatings) will have a outer diameter of: 98 mm for 1A, 122 mm for 1B, 146 mm for 1C, 170 mm for 1D (not shown); and respectively an internal diameter of: 74 mm, 98 mm, 122 mm, 146 mm. This process allows a significant saving on the price of the seal or the elastomeric coating, a strong reduction of the bulk and allows to see the interior of the receptacles when a transparent material is used to make the lids 1A-1C.
  • Figure 5 shows in schematic section the cover 1 without its valve V to facilitate understanding, closing a container 53 with a flared edge 52, said cover being deformed under the attraction of the vacuum.
  • an absolutely rigid cover can be used, it is preferable that it has a flexibility which does not exceed, of course, its elastic limit, but which can vary from zero to 15%, depending on the arrow AB, depending on the main criteria mentioned above so that, under the constraint of the vacuum, it is able to match the veil or certain small deformations of the edge of many containers (case of earthenware, stoneware utensils and pottery, cast iron cookers, etc.).
  • the percentage of acceptable temporary deformation of the cover 1 is very useful and very variable depending on the above criteria and the essential points are defined below. It is the quotient of a fraction AB CD whose numerator corresponds to arrow AB and denominator to string CD.
  • the arrow AB represents the acceptable deformation (without exceeding the elastic limit of the material of which it is composed and according to the abovementioned criteria) from the configuration at rest where the cover 1 occupies the substantially horizontal plane CAD and the concave configuration represented in FIG. 5.
  • This percentage of deformation can be equal to, or even greater than, 15%, especially if the cover is made in a shape which, at rest, is already slightly concave, not shown.
  • the cover be slightly deformable so that it can better adapt to the defects encountered on the edge of a container. This is not the only positive side of its deformability; Indeed, since the cover is curved during the conservation of the foodstuffs and that it becomes flat (or almost) when the vacuum constraint ceases, it is then easy, at a glance, to realize if , by chance, it did not "drop", an impossible finding if it is made of a completely undeformable material. In addition, and this is not negligible, it is often possible, when the edge of the lid sufficiently exceeds that of the covered container, to reopen it simply by twisting the edge of the lid which thereby allows air to enter.
  • Figure 6 shows in section a stamped or molded cover 1G, having folding zones 43, 57, helping to increase its rigidity while reducing the thickness, therefore the price; therefore its two faces are not flat, but include reliefs which will prevent the closure of containers whose opening diameter corresponds substantially to that of the folding zones. To remedy this deficiency, it will be necessary, as explained in connection with FIG. 4, to use a series of covers with intermediate folding zones.
  • the cover 1G is provided with a non-return device V ′ with a membrane 55, fixed at 56 and which, under the action of a vacuum pump, opens or closes the orifice 59 of the hole 58 formed in the cover 1G; the end of the non-return device V ′ has a countersink 69 pierced in its center and intended to receive a male end piece (not shown) of a vacuum pump whose sealing between the two connected elements can be ensured by a screwing, cone or attached.
  • a male plug (not shown) may replace the plug 36 described in relation to Figure 1A.
  • the non-return device V or V ′ always exceeds the upper face of the cover according to the invention, but when it is useful to stack the capped containers according to the invention on top of each other, the non-return device V or V ′ could be embedded in the thickness of the cover 1 or of its reinforcements 42 ( Figure 3).
  • Figure 7 shows, seen from above and very schematically, a cover 1H of rectangular shape, its non-return means V ⁇ , part of its coating or seal 2H, which extends from the edge of the cover to a selected shape area 62, here rectangular, leaving a window 63 free which allows the interior of the associated container to be seen if the material used for the cover 1H is transparent.
  • the lid 1H which is rectangular can cover and cap as well, for example, an oval container with a thin edge 60, as a rectangular container with wide edges 61 of the sardine box type for example.
  • Figure 8 which is a top view of the cover 1 of Figure 1 shows that it is capable of closing both circular containers of different diameters, 64, 66, 67, than a square container 65, or even the orifice of an enclosure or a container of any shape 68.
  • the layer of 2D sealing material is roughly annular and it is molded on the cover 1, so that its outer edge 69 is folded over the upper face of said cover 1.
  • the edge inside 70 of the 2D layer is trapped between the underside of the cover and a ring 71 welded to the cover.
  • This embodiment differs essentially from the previous ones by the structure of the valve with which it is equipped.
  • this valve V ′′′ consists of a circular base 72 from which projects a central stud 73 full.
  • the free end 74 of the stud is flat.
  • the base 72 is pierced with four perforations 75a, 75b, 75c and 75d.
  • the material of the valve is relatively deformable; it can be rubber.
  • the face of the base 72 which is applied against the cover can be smooth, or grooved, or have concentric reliefs to strengthen the seal.
  • valve V ′′′ is positioned in such a way, on the cover 1, that the stud 73 is in the axis of the orifice 7 of the cover and that the perforations 75a d are located away from this orifice.
  • the valve V ′′′ is immobilized on the cover 1 by means of a ring 76 secured to the latter by any suitable means, such as welding, riveting, bonding, clipping.
  • the ring 76 can be removable to allow the exchange of the valve V ′′′, if necessary.
  • the ring 76 leaves exposed the central part of the base 72 of the valve and offers a receiving guide to a nozzle 77 belonging to a pump body or constituting an independent member which can be combined with an appropriate suction means.
  • the free edge of this nozzle is provided with a seal 78 adapted to come to rest on the upper face of the base 72.
  • the end piece 77 covers the part of the valve in which the perforations 75a-d are formed.
  • the embodiment of Figure 12 differs from that of Figure 9 in that the layer of sealing material 2E covers the entire lower surface of the cover and is not folded over the edge thereof. This layer 2E could end at a small distance from the free edge of the cover so that its own edge is protected.
  • the cover according to the invention can be used to isolate any product from the ambient environment: for example, in watchmaking to preserve oxidizable parts; in the laboratory to stop test tubes. It can also be used to close the opening of cabinets, tanks and drums and various containers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)
EP19910403453 1990-12-21 1991-12-19 Deckel, geeignet zur Erstellung eines dichten Behälters zum Aufbewahren von Produkten wie Nahrungsmitteln Expired - Lifetime EP0494559B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9016100A FR2670753B1 (fr) 1990-12-21 1990-12-21 Couvercle adapte a realiser une enceinte etanche pour la conservation d'un produit, tel qu'un aliment.
FR9016100 1990-12-21

Publications (2)

Publication Number Publication Date
EP0494559A1 true EP0494559A1 (de) 1992-07-15
EP0494559B1 EP0494559B1 (de) 1995-09-06

Family

ID=9403532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910403453 Expired - Lifetime EP0494559B1 (de) 1990-12-21 1991-12-19 Deckel, geeignet zur Erstellung eines dichten Behälters zum Aufbewahren von Produkten wie Nahrungsmitteln

Country Status (4)

Country Link
EP (1) EP0494559B1 (de)
DE (1) DE69112803T2 (de)
ES (1) ES2077828T3 (de)
FR (1) FR2670753B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0644128A1 (de) * 1993-09-20 1995-03-22 Heng-Te Yang Dichtverschliessbare Dose die mittels einer Vakuumpumpe evakuiert werden kann
WO2003068607A2 (en) * 2002-02-18 2003-08-21 Korea Alphaline Co. Ltd. Vacuum container
WO2006107975A2 (en) * 2005-04-06 2006-10-12 Avery Dennison Corporation Valve for an evacuatable container
US7837387B2 (en) 2005-04-06 2010-11-23 Avery Dennison Corporation Evacuatable container
CN110839807A (zh) * 2019-12-09 2020-02-28 九江鸿立食品有限公司 一种负压真空蜜制罐

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142645A (en) * 1978-04-12 1979-03-06 Walton Donald G Vacuum sealing closure lid for home canning operations
FR2490592A1 (fr) * 1980-09-23 1982-03-26 Schroffner Pirc Ind Inc Procede et appareil de fermeture hermetique sous vide de recipients, notamment pour des conserves
FR2575996A3 (fr) * 1985-01-14 1986-07-18 Mariani Pietro Couvercle pour recipients destines au conditionnement sous vide de produits alimentaires, conserves et analogues

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142645A (en) * 1978-04-12 1979-03-06 Walton Donald G Vacuum sealing closure lid for home canning operations
FR2490592A1 (fr) * 1980-09-23 1982-03-26 Schroffner Pirc Ind Inc Procede et appareil de fermeture hermetique sous vide de recipients, notamment pour des conserves
FR2575996A3 (fr) * 1985-01-14 1986-07-18 Mariani Pietro Couvercle pour recipients destines au conditionnement sous vide de produits alimentaires, conserves et analogues

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0644128A1 (de) * 1993-09-20 1995-03-22 Heng-Te Yang Dichtverschliessbare Dose die mittels einer Vakuumpumpe evakuiert werden kann
WO2003068607A2 (en) * 2002-02-18 2003-08-21 Korea Alphaline Co. Ltd. Vacuum container
WO2003068607A3 (en) * 2002-02-18 2003-11-27 Korea Alphaline Co Ltd Vacuum container
WO2006107975A2 (en) * 2005-04-06 2006-10-12 Avery Dennison Corporation Valve for an evacuatable container
WO2006107975A3 (en) * 2005-04-06 2006-12-28 Avery Dennison Corp Valve for an evacuatable container
US7837387B2 (en) 2005-04-06 2010-11-23 Avery Dennison Corporation Evacuatable container
CN110839807A (zh) * 2019-12-09 2020-02-28 九江鸿立食品有限公司 一种负压真空蜜制罐

Also Published As

Publication number Publication date
FR2670753A1 (fr) 1992-06-26
DE69112803D1 (de) 1995-10-12
DE69112803T2 (de) 1996-04-18
EP0494559B1 (de) 1995-09-06
FR2670753B1 (fr) 1993-04-09
ES2077828T3 (es) 1995-12-01

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