EP1059498A1 - Apparatus for raising and lowering the shelves in a freeze drying chamber - Google Patents

Apparatus for raising and lowering the shelves in a freeze drying chamber Download PDF

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Publication number
EP1059498A1
EP1059498A1 EP00401541A EP00401541A EP1059498A1 EP 1059498 A1 EP1059498 A1 EP 1059498A1 EP 00401541 A EP00401541 A EP 00401541A EP 00401541 A EP00401541 A EP 00401541A EP 1059498 A1 EP1059498 A1 EP 1059498A1
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EP
European Patent Office
Prior art keywords
shelves
link
articulated
axis
longitudinal
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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.)
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EP00401541A
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German (de)
French (fr)
Inventor
Patrick Gallet
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Usifroid SA
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Usifroid SA
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Publication of EP1059498A1 publication Critical patent/EP1059498A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/025—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers
    • B65B31/027—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers closed by a stopper

Definitions

  • the present invention relates to a device for raise and lower the shelves in a bowl lyophilization.
  • freeze dryers are used to dehydrate certain substances, in particular biological materials, to ensure better conservation. These substances are placed in bottles that are placed inside of the tank on shelves.
  • the shelves superimposed must be in the upper position so that that the distance between two successive shelves is greater than the height of said bottles.
  • the bottles are fitted with plugs when introduced into the tank, but these plugs are not pushed in, to allow the water vapor contained in said substances to escape during the freeze-drying process.
  • freeze-drying cycle ends with the opening of the door of the tank and by the unloading of the latter. So here you have to raise the shelves again to ability to remove vials.
  • the present invention relates to the mechanism, controlled by from the outside of the lyophilization tank, which allows the shelves to be raised and lowered according to the needs.
  • Known devices provide for raising and lowering the upper shelf by means of a screw end operated from the outside.
  • the shelves have all, on the side, holes through which pass rods thus maintained in vertical position.
  • the upper shelf lifts, it drives, thanks to said links, first the shelf located just in below, then the one still below, and so continued to the lowest shelf.
  • the invention elegantly solves this problem, replacing the classic rod system with a set of identical identical, robust articulated links but light, each of these links connecting two shelves successive and being itself composed of a part longitudinal upper and a longitudinal part lower articulated freely around an axis, the end upper of said upper hinge part with one of the shelves, and the lower end of said part lower hinge with the shelf located immediately below the previous one.
  • said part lower of said articulated link is made of two plates identical metal having roughly the shape of a rectangle lying face to face and fixed together by means of a transverse rod, the latter connecting the plates near their upper ends, and forming said axis.
  • the articulated link according to the invention consists of an upper longitudinal part 1 and a lower longitudinal part 2 articulated freely around an axis 3 integral with said part lower 2 and which crosses an oblong hole 4 arranged longitudinally in said upper part 1.
  • This upper part 1 consists of a plate elongated metal ending at one end with an edge rounded 11. We drilled in said plate 1 near this edge 11 a hole 5 through which passes a pin 6 rigidly fixed to a shelf 13, said upper part 1 being able to pivot freely around axis 6.
  • the lower part 2 of said articulated link is made of two identical metal plates 7 and 8 having roughly the shape of an elongated rectangle that face each other and are fixed together by means of a transverse rod forming said axis 3 near their upper ends.
  • Part lower 2 can pivot freely around the axis 6 '.
  • Each shelf has several such axes 6, for example four axes each projecting near a corner of the shelf whose shape is roughly rectangular.
  • the following phenomenon may manifest at the level of this or that articulated link: everything first, the upper part 1 will lower until the upper part of hole 4 comes to bear on axis 3; the two parts 1 and 2 of the link will then be aligned in a vertical direction, and the upper part 1 will exert a vertical force directed downwards on the lower part 2; it could happen while the articulated link, unable to spontaneously choose which side to fold, locks in this vertical position, and possibly then unlocks after undergoing deformation irreversible.
  • the invention provides that the upper part 1, instead of present a lower end approximately rectangular like the other five ends of the plates 1, 7 and 8, ends on the contrary by a bias curve 12; the dimensions of the articulated link are then chosen from so that when the top 1 and lower 2 are arranged vertically and that the shelves 13 and 13 'connected by this link begin to approach, the lower end of the bias curve 12 comes in support on the upper rounded edge 11 'of the link located immediately below that considered, and starts to slide on this rounded edge 11 '.
  • the axes 6 of the lowest shelf have each a bulge (not shown) taking place between the plates 7 and 8 of the links fixed to these axes 6, so as to trigger the folding of said links by acting on their bias curves 12 in the same way as the rounded edges 11 of the links located immediately below if they had existed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Device comprises number of articulated links comprising longitudinal upper (1) and lower (2) parts freely articulated about spindle (3) and connecting two successive shelves (13,13'). The upper end of upper part forms hinge (6) with one of shelves and lower end of lower part forms hinge (6') with shelf located immediately below. Lower part is made of two identical rectangular plates attached by spindle (3). Upper part consists of long metal plate with oblong hole (4) and skew cut (12) in its lower end. When shelves are lowering, skew cut contacts above part's rounded end and both parts start pivoting.

Description

La présente invention concerne un dispositif servant à relever et à abaisser les étagères dans une cuve de lyophilisation.The present invention relates to a device for raise and lower the shelves in a bowl lyophilization.

On sait que les lyophilisateurs servent à déshydrater certaines substances, notamment des matières biologiques, pour leur assurer une meilleure conservation. Ces substances sont placées dans des flacons que l'on dispose à l'intérieur de la cuve sur des étagères.We know that freeze dryers are used to dehydrate certain substances, in particular biological materials, to ensure better conservation. These substances are placed in bottles that are placed inside of the tank on shelves.

Ainsi, pendant le chargement de la cuve, les étagères superposées doivent se trouver en position haute de manière à ce que la distance entre deux étagères successives soit supérieure à la hauteur desdits flacons. Les flacons sont munis de bouchons quand on les introduit dans la cuve, mais ces bouchons ne sont pas enfoncés, afin de permettre à la vapeur d'eau contenue dans lesdites substances de s'échapper pendant le processus de lyophilisation.So while the tank is loading, the shelves superimposed must be in the upper position so that that the distance between two successive shelves is greater than the height of said bottles. The bottles are fitted with plugs when introduced into the tank, but these plugs are not pushed in, to allow the water vapor contained in said substances to escape during the freeze-drying process.

A la fin du cycle de lyophilisation, on procède au bouchage des flacons avant d'ouvrir la cuve à l'air libre. Cette opération est réalisée en abaissant les étagères de la hauteur requise pour que chaque étagère enfonce, dans leurs flacons respectifs, les bouchons situés juste sous cette étagère.At the end of the freeze-drying cycle, we proceed to stoppering the bottles before opening the tank in the open air. This is done by lowering the shelves of the height required for each shelf to sink into their respective bottles, the caps located just below this shelf.

Le cycle de lyophilisation s'achève par l'ouverture de la porte de la cuve et par le déchargement de cette dernière. Il faut donc ici relever une nouvelle fois les étagères pour pouvoir en retirer les flacons.The freeze-drying cycle ends with the opening of the door of the tank and by the unloading of the latter. So here you have to raise the shelves again to ability to remove vials.

Outre les opérations ci-dessus, il est utile de temps en temps d'abaisser les étagères vides jusqu'à ce qu'elles s'empilent les unes sur les autres, pour permettre d'accéder à l'intérieur de la cuve afin de procéder à son entretien.In addition to the above operations, it is useful from time to time time to lower the empty shelves until they stack on top of each other, to allow access inside the tank in order to carry out its maintenance.

La présente invention concerne le mécanisme, commandé à partir de l'extérieur de la cuve de lyophilisation, qui permet de relever et d'abaisser les étagères selon les besoins.The present invention relates to the mechanism, controlled by from the outside of the lyophilization tank, which allows the shelves to be raised and lowered according to the needs.

Les dispositifs connus prévoient le relèvement et l'abaissement de l'étagère supérieure au moyen d'une vis sans fin actionnée depuis l'extérieur. Les étagères comportent toutes, sur le côté, des trous à travers lesquels passent des biellettes maintenues ainsi en position verticale. Quand l'étagère supérieure se soulève, elle entraíne, grâce auxdites biellettes, d'abord l'étagère située juste en dessous, puis celle située encore en dessous, et ainsi de suite jusqu'à l'étagère la plus basse.Known devices provide for raising and lowering the upper shelf by means of a screw end operated from the outside. The shelves have all, on the side, holes through which pass rods thus maintained in vertical position. When the upper shelf lifts, it drives, thanks to said links, first the shelf located just in below, then the one still below, and so continued to the lowest shelf.

Ces dispositifs connus présentent de sérieux inconvénients, qui sont causés principalement par le poids important des étagères (supporté d'ailleurs essentiellement par l'étagère supérieure) et la précision requise dans ces mouvements alternatifs. En effet, on doit en conséquence utiliser un nombre important de longues biellettes, qui plus est de large section ; de ce fait, les biellettes encombrent la cuve de façon très fâcheuse.These known devices present serious disadvantages, which are caused mainly by the weight large shelves (mainly supported elsewhere by the upper shelf) and the precision required in these alternative movements. Indeed, we must therefore use a large number of long rods, which more is wide in section; therefore, the rods clutter the tank in a very annoying way.

L'invention permet de résoudre élégamment ce problème, en remplaçant le système classique de biellettes par un ensemble de petits maillons articulés identiques, robustes mais légers, chacun de ces maillons reliant deux étagères successives et étant lui-même composé d'une partie longitudinale supérieure et d'une partie longitudinale inférieure articulées librement autour d'un axe, l'extrémité supérieure de ladite partie supérieure formant charnière avec une des étagères, et l'extrémité inférieure de ladite partie inférieure formant charnière avec l'étagère située immédiatement au-dessous de la précédente.The invention elegantly solves this problem, replacing the classic rod system with a set of identical identical, robust articulated links but light, each of these links connecting two shelves successive and being itself composed of a part longitudinal upper and a longitudinal part lower articulated freely around an axis, the end upper of said upper hinge part with one of the shelves, and the lower end of said part lower hinge with the shelf located immediately below the previous one.

Selon des caractéristiques particulières, ladite partie inférieure dudit maillon articulé est faite de deux plaques métalliques identiques ayant en gros la forme d'un rectangle allongé qui se font face et sont fixées ensemble au moyen d'une tige transversale, cette dernière reliant les plaques près de leurs extrémités supérieures, et formant ledit axe.According to particular characteristics, said part lower of said articulated link is made of two plates identical metal having roughly the shape of a rectangle lying face to face and fixed together by means of a transverse rod, the latter connecting the plates near their upper ends, and forming said axis.

Selon des caractéristiques particulières supplémentaires, ladite partie supérieure dudit maillon articulé comporte :

  • un trou oblong longitudinal à travers lequel passe ledit axe,
  • un bord arrondi à son extrémité supérieure, et
  • une courbe en biais à son extrémité inférieure.
    • Les dimensions du maillon sont choisies de façon à ce que, lorsque les parties supérieure et inférieure sont disposées verticalement et que les étagères reliées par le maillon commencent à se rapprocher, l'extrémité inférieure de ladite courbe en biais vienne en appui sur le bord arrondi du maillon situé immédiatement au-dessous de celui considéré, et se mette à glisser sur ce bord arrondi, ce qui entraíne le pivotement des parties supérieure et inférieure du maillon autour dudit axe.According to additional particular characteristics, said upper part of said articulated link comprises:
  • a longitudinal oblong hole through which said axis passes,
  • a rounded edge at its upper end, and
  • a bias curve at its lower end.
    • The dimensions of the link are chosen so that, when the upper and lower parts are arranged vertically and the shelves connected by the link begin to approach, the lower end of said bias curve comes to bear on the rounded edge of the link located immediately below that considered, and begins to slide on this rounded edge, which causes the pivoting of the upper and lower parts of the link around said axis.

    D'autres avantages, buts et caractéristiques de la présente invention ressortiront de la description ci-dessous d'un mode de réalisation de l'invention présenté à titre d'exemple, ladite description s'appuyant sur les figures annexées, dans lesquelles :

  • la figure 1 représente, en vue de face, plusieurs maillons articulés successifs selon l'invention, en position dépliée, c'est-à-dire dans la position prise par les maillons quand les étagères (non représentées) sont relevées,
  • la figure 2 est une vue en coupe, prise suivant la ligne II-II de la figure 1, sur laquelle on a également représenté les extrémités de deux étagères, et
  • la figure 3 représente, en vue de face, un maillon articulé selon l'invention en position de repli partiel, c'est-à-dire à un moment où les deux étagères (dont on voit les extrémités sur cette figure) formant charnière avec les extrémités supérieure et inférieure dudit maillon articulé se sont rapprochées.
    • Other advantages, aims and characteristics of the present invention will emerge from the description below of an embodiment of the invention presented by way of example, said description being based on the appended figures, in which:
  • FIG. 1 represents, in front view, several successive articulated links according to the invention, in the unfolded position, that is to say in the position taken by the links when the shelves (not shown) are raised,
  • FIG. 2 is a sectional view, taken along line II-II of FIG. 1, in which the ends of two shelves have also been shown, and
  • FIG. 3 represents, in front view, an articulated link according to the invention in the partially folded position, that is to say at a time when the two shelves (the ends of which can be seen in this figure) forming a hinge with the upper and lower ends of said articulated link are brought together.

    • Les figures montrent que le maillon articulé selon l'invention se compose d'une partie longitudinale supérieure 1 et d'une partie longitudinale inférieure 2 articulées librement autour d'un axe 3 solidaire de ladite partie inférieure 2 et qui traverse un trou oblong 4 aménagé longitudinalement dans ladite partie supérieure 1.The figures show that the articulated link according to the invention consists of an upper longitudinal part 1 and a lower longitudinal part 2 articulated freely around an axis 3 integral with said part lower 2 and which crosses an oblong hole 4 arranged longitudinally in said upper part 1.

    Cette partie supérieure 1 consiste en une plaque métallique allongée se terminant à une extrémité par un bord arrondi 11. On a percé dans ladite plaque 1 près de ce bord 11 un trou 5 à travers lequel passe un axe 6 fixé rigidement à une étagère 13, ladite partie supérieure 1 pouvant pivoter librement autour de l'axe 6.This upper part 1 consists of a plate elongated metal ending at one end with an edge rounded 11. We drilled in said plate 1 near this edge 11 a hole 5 through which passes a pin 6 rigidly fixed to a shelf 13, said upper part 1 being able to pivot freely around axis 6.

    La partie inférieure 2 dudit maillon articulé est faite de deux plaques métalliques identiques 7 et 8 ayant en gros la forme d'un rectangle allongé qui se font face et sont fixées ensemble au moyen d'une tige transversale formant ledit axe 3 près de leurs extrémités supérieures. On a percé deux trous 9 et 10, respectivement, dans les plaques 7 et 8 près de leur extrémité inférieure, trous à travers lesquels passe un axe 6' fixé rigidement à l'étagère 13' située immédiatement au-dessous de l'étagère 13. La partie inférieure 2 peut pivoter librement autour de l'axe 6'.The lower part 2 of said articulated link is made of two identical metal plates 7 and 8 having roughly the shape of an elongated rectangle that face each other and are fixed together by means of a transverse rod forming said axis 3 near their upper ends. We pierced two holes 9 and 10, respectively, in plates 7 and 8 near their lower end, holes through which passes an axis 6 'rigidly fixed to the shelf 13' located immediately below shelf 13. Part lower 2 can pivot freely around the axis 6 '.

    Chaque étagère comporte plusieurs tels axes 6, par exemple quatre axes faisant chacun saillie près d'un coin de l'étagère dont la forme est en gros rectangulaire.Each shelf has several such axes 6, for example four axes each projecting near a corner of the shelf whose shape is roughly rectangular.

    Le fonctionnement du dispositif selon l'invention, dans une phase de relèvement des étagères, ressemble à celui du dispositif classique à biellettes : les étagères sont successivement entraínées, en commençant par l'étagère supérieure actionnée par une vis sans fin, au fur et à mesure que les maillons articulés se déplient et se tendent sous l'effet du poids des étagères. Une fois lesdites étagères relevées, les axes 3 reposent sur l'extrémité inférieure des trous oblongs 4.The operation of the device according to the invention, in a phase of raising the shelves, resembles that of classic link device: the shelves are successively trained, starting with the shelf upper actuated by a worm screw, progressively that the articulated links unfold and tighten under the effect of the weight of the shelves. Once said shelves raised, axes 3 rest on the lower end of the oblong holes 4.

    Si l'on ne prévoit pas de dispositif particulier pour la phase d'abaissement des étagères, le phénomène suivant pourra se manifester au niveau de tel ou tel maillon articulé : tout d'abord, la partie supérieure 1 s'abaissera jusqu'à ce que la partie supérieure du trou 4 vienne en appui sur l'axe 3 ; les deux parties 1 et 2 du maillon seront alors alignées dans une direction verticale, et la partie supérieure 1 exercera une force verticale dirigée vers le bas sur la partie inférieure 2 ; il pourra arriver alors que le maillon articulé, incapable de choisir spontanément de quel côté se plier, se bloque dans cette position verticale, et éventuellement se débloque ensuite après avoir subi une déformation irréversible.If no special device is provided for lowering the shelves, the following phenomenon may manifest at the level of this or that articulated link: everything first, the upper part 1 will lower until the upper part of hole 4 comes to bear on axis 3; the two parts 1 and 2 of the link will then be aligned in a vertical direction, and the upper part 1 will exert a vertical force directed downwards on the lower part 2; it could happen while the articulated link, unable to spontaneously choose which side to fold, locks in this vertical position, and possibly then unlocks after undergoing deformation irreversible.

    Afin de briser la symétrie à l'origine de ce problème, l'invention prévoit que la partie supérieure 1, au lieu de présenter une extrémité inférieure approximativement rectangulaire comme les cinq autres extrémités des plaques 1, 7 et 8, se termine au contraire par une courbe en biais 12 ; les dimensions du maillon articulé sont alors choisies de façon à ce que, lorsque les parties supérieure 1 et inférieure 2 sont disposées verticalement et que les étagères 13 et 13' reliées par ce maillon commencent à se rapprocher, l'extrémité inférieure de la courbe en biais 12 vienne en appui sur le bord arrondi supérieur 11' du maillon situé immédiatement au-dessous de celui considéré, et se mette à glisser sur ce bord arrondi 11'. Il en résulte un pivotement en douceur des deux parties 1 et 2 autour de l'axe 3, dans le sens de rotation imposé par l'inclinaison de la courbe en biais 12 par rapport à la direction transversale sur la partie supérieure 1.In order to break the symmetry behind this problem, the invention provides that the upper part 1, instead of present a lower end approximately rectangular like the other five ends of the plates 1, 7 and 8, ends on the contrary by a bias curve 12; the dimensions of the articulated link are then chosen from so that when the top 1 and lower 2 are arranged vertically and that the shelves 13 and 13 'connected by this link begin to approach, the lower end of the bias curve 12 comes in support on the upper rounded edge 11 'of the link located immediately below that considered, and starts to slide on this rounded edge 11 '. This results in pivoting smoothly of the two parts 1 and 2 around the axis 3, in the direction of rotation imposed by the inclination of the curve in bias 12 relative to the transverse direction on the upper part 1.

    Enfin, les axes 6 de l'étagère la plus basse comportent chacun un renflement (non représenté) prenant place entre les plaques 7 et 8 des maillons fixés à ces axes 6, de manière à déclencher le pliement desdits maillons en agissant sur leurs courbes en biais 12 de la même façon que l'auraient fait les bords arrondis 11 des maillons situés immédiatement au-dessous s'ils avaient existé.Finally, the axes 6 of the lowest shelf have each a bulge (not shown) taking place between the plates 7 and 8 of the links fixed to these axes 6, so as to trigger the folding of said links by acting on their bias curves 12 in the same way as the rounded edges 11 of the links located immediately below if they had existed.

    On voit donc que les buts de l'invention mentionnés dans l'introduction sont bien atteints puisque les maillons articulés ainsi constitués remplissent parfaitement leur fonction, tout en étant beaucoup plus petits et légers que les biellettes utilisées dans les dispositifs classiques servant au relèvement et à l'abaissement des étagères dans les cuves de lyophilisation.It can therefore be seen that the aims of the invention mentioned in the introduction is well achieved since the links articulated thus formed perfectly fulfill their function, while being much smaller and lighter than the rods used in conventional devices used to raise and lower shelves in lyophilization tanks.

    Claims (3)

    Dispositif servant à relever et abaisser les étagères dans une cuve de lyophilisation, caractérisé en ce qu'il comprend un certain nombre de maillons articulés identiques, chacun de ces maillons reliant deux étagères successives et étant lui-même composé d'une partie longitudinale supérieure (1) et d'une partie longitudinale inférieure (2) articulées librement autour d'un axe (3), l'extrémité supérieure de ladite partie supérieure (1) formant charnière avec une des étagères (13), et l'extrémité inférieure de ladite partie inférieure (2) formant charnière avec l'étagère (13') située immédiatement au-dessous de la précédente (13).Device for raising and lowering shelves in a freeze-drying tank, characterized in that it includes a number of articulated links identical, each of these links connecting two shelves successive and being itself composed of a part longitudinal upper (1) and a longitudinal part lower (2) articulated freely around an axis (3), the upper end of said upper part (1) forming a hinge with one of the shelves (13), and the end lower of said lower part (2) forming a hinge with the shelf (13 ') located immediately below the previous (13). Dispositif selon la revendication 1, caractérisé en ce que ladite partie inférieure (2) dudit maillon articulé est faite de deux plaques métalliques identiques (7 ; 8) ayant en gros la forme d'un rectangle allongé qui se font face et sont fixées ensemble au moyen d'une tige transversale, cette dernière reliant les plaques (7 ; 8) près de leurs extrémités supérieures et formant ledit axe (3).Device according to claim 1, characterized in that said lower part (2) of said articulated link is made of two identical metal plates (7; 8) roughly in the shape of an elongated rectangle which are face and are fixed together by means of a rod transverse, the latter connecting the plates (7; 8) close of their upper ends and forming said axis (3). Dispositif selon la revendication 2, caractérisé en ce que ladite partie supérieure (1) dudit maillon articulé comporte : un trou oblong longitudinal (4) à travers lequel passe ledit axe (3), un bord arrondi (11) à son extrémité supérieure, et une courbe en biais (12) à son extrémité inférieure, et en ce que les dimensions du maillon sont choisies de façon à ce que, lorsque les parties supérieure (1) et inférieure (2) sont disposées verticalement et que les étagères (13 ; 13') reliées par le maillon commencent à se rapprocher, l'extrémité inférieure de ladite courbe en biais (12) vienne en appui sur le bord arrondi (11') du maillon situé immédiatement au-dessous de celui considéré, et se mette à glisser sur ce bord arrondi (11'), ce qui entraíne le pivotement des parties supérieure (1) et inférieure (2) du maillon autour dudit axe (3). Device according to claim 2, characterized in that said upper part (1) of said articulated link comprises: a longitudinal oblong hole (4) through which said axis (3) passes, a rounded edge (11) at its upper end, and a bias curve (12) at its lower end, and in that the dimensions of the link are chosen so that, when the upper (1) and lower (2) parts are arranged vertically and the shelves (13; 13 ') connected by the link begin to approach, the lower end of said bias curve (12) comes to rest on the rounded edge (11') of the link located immediately below that considered, and starts to slide on this rounded edge (11 '), which causes the pivoting of the upper (1) and lower (2) parts of the link around said axis (3).
    EP00401541A 1999-06-10 2000-05-31 Apparatus for raising and lowering the shelves in a freeze drying chamber Withdrawn EP1059498A1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9907320A FR2794848B1 (en) 1999-06-10 1999-06-10 DEVICE FOR RAISING AND LOWERING THE SHELVES IN A LYOPHILIZATION TANK
    FR9907320 1999-06-10

    Publications (1)

    Publication Number Publication Date
    EP1059498A1 true EP1059498A1 (en) 2000-12-13

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    EP00401541A Withdrawn EP1059498A1 (en) 1999-06-10 2000-05-31 Apparatus for raising and lowering the shelves in a freeze drying chamber

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    FR (1) FR2794848B1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN104315809A (en) * 2014-09-28 2015-01-28 四川德成动物保健品有限公司 Traditional Chinese medicine raw material drying room with conveniently adjusted tray rack

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US1905131A (en) * 1931-02-25 1933-04-25 Frosted Foods Co Inc Refrigerating apparatus
    US2484944A (en) * 1943-12-07 1949-10-18 Gen Foods Corp Refrigerating apparatus
    US3537233A (en) * 1967-08-15 1970-11-03 Hull Corp Container stoppering apparatus
    FR2655020A1 (en) * 1989-11-30 1991-05-31 Usifroid Mechanism for stoppering bottles in a lyophilisation (freeze-drying) vessel

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US1905131A (en) * 1931-02-25 1933-04-25 Frosted Foods Co Inc Refrigerating apparatus
    US2484944A (en) * 1943-12-07 1949-10-18 Gen Foods Corp Refrigerating apparatus
    US3537233A (en) * 1967-08-15 1970-11-03 Hull Corp Container stoppering apparatus
    FR2655020A1 (en) * 1989-11-30 1991-05-31 Usifroid Mechanism for stoppering bottles in a lyophilisation (freeze-drying) vessel

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN104315809A (en) * 2014-09-28 2015-01-28 四川德成动物保健品有限公司 Traditional Chinese medicine raw material drying room with conveniently adjusted tray rack

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    FR2794848B1 (en) 2001-07-27
    FR2794848A1 (en) 2000-12-15

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