EP0149797B1 - Eprouvette synthétique pour de faibles quantités de liquide - Google Patents

Eprouvette synthétique pour de faibles quantités de liquide Download PDF

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Publication number
EP0149797B1
EP0149797B1 EP84115399A EP84115399A EP0149797B1 EP 0149797 B1 EP0149797 B1 EP 0149797B1 EP 84115399 A EP84115399 A EP 84115399A EP 84115399 A EP84115399 A EP 84115399A EP 0149797 B1 EP0149797 B1 EP 0149797B1
Authority
EP
European Patent Office
Prior art keywords
cover
vessel
edge
opening
reaction vessel
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
EP84115399A
Other languages
German (de)
English (en)
Other versions
EP0149797A3 (en
EP0149797B2 (fr
EP0149797A2 (fr
Inventor
Hero Dr.-Ing. Gerken
Heinz-Jürgen Gora
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.)
Eppendorf SE
Original Assignee
Eppendorf Netheler Hinz GmbH
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
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Application filed by Eppendorf Netheler Hinz GmbH filed Critical Eppendorf Netheler Hinz GmbH
Priority to AT84115399T priority Critical patent/ATE40310T1/de
Publication of EP0149797A2 publication Critical patent/EP0149797A2/fr
Publication of EP0149797A3 publication Critical patent/EP0149797A3/de
Application granted granted Critical
Publication of EP0149797B1 publication Critical patent/EP0149797B1/fr
Publication of EP0149797B2 publication Critical patent/EP0149797B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above
    • B01L3/5082—Test tubes per se
    • B01L3/50825—Closing or opening means, corks, bungs

Definitions

  • the invention relates to a reaction vessel made of plastic for small amounts of liquid with a lid arranged by means of a flat web provided in one piece with the opening, which has an outwardly projecting edge, which comes into contact with the opening edge of the vessel over a substantial circumferential section, and an in the opening insertable cylindrical wall part, from which the outwardly projecting edge has a flange.
  • a reaction vessel is also included, in which the edge protruding outwards protrudes downwards at the edge, i.e. has in the direction of the cylindrical wall portion extending web that comes into contact with the opening edge of the vessel.
  • this known embodiment is to create a reaction vessel with a lid which is suitable for processing smaller amounts of liquid.
  • this known version is made of plastic and is intended for single use only.
  • This known design made of weakly elastic materials does not exclude profiles which come into engagement with one another between the lid and the vessel mouth, for example in the form of an annular groove on the lid projection and a bead-like ring profile on the vessel mouth. This supports the above-mentioned snap action when stripping the lid, but represents a considerable effort when closing the lid with respect to the alignment of the vessel mouth.
  • a stepped wall part is known as an attachment to a vascular mouth.
  • This wall part which is provided with a passage, is provided with a cover connected, for example, via two webs.
  • Profiles coming into engagement or contact with one another are arranged between the cover and the attachment, and the known cover has a downward hook-like projection as a closure element. With the lid closed, this grips under a step on the attachment.
  • the engaging profiles are designed so that the lid can be pressed into the mouth to open and thus to release the hook-like approach. In this case, a bead-like profile is pushed out of an assigned recess, so that a snap closure produced with the latter parts is thereby opened at the same time.
  • Lids held captively on the vessel have advantages in themselves.
  • the vessel opening is funnel-like widened at its edge on the inside, so that the cylindrical wall part can be smoothly inserted, which may come into contact with an essentially external sealing lip on the essentially cylindrical seat surface outside the outer opening edge of the vessel .
  • the invention has for its object to improve a reaction vessel of the type specified in such a way that, with the possibility of easy closing and also a correspondingly easy opening by hand, it should be difficult to open by internal pressure and an additional securing of the closed lid is brought about .
  • the flat web is formed in its central region as a double joint, by which a parallel guidance of the cover is made possible in free transverse mobility when closing that the height of the parallel guide to the length of a hook-like on the cover in the closing direction downward Approach is coordinated that the alignment of the lid is provided by a sealing lip arranged at the end of the cylindrical wall part to be inserted into the opening, and that the hook-like extension engages under a graspable section at the vessel opening opposite the flat web when the lid is closed.
  • the double joint enables the cover to move transversely and to be self-aligned in the vessel opening, this self-alignment being facilitated by means of the sealing lip.
  • the hook-like approach also has the effect of a lateral guide if it closely engages under the graspable section on the edge flange at the vessel opening.
  • the double joint enables the cover to be guided in parallel through the edge web, the alignment of the cover being carried out while the seal is maintained by the sealing lip arranged on the cylindrical wall part.
  • the flat web has in its central region a projection which projects inwards in the bent state and which forms a spacing and parallel guidance of the joints of the double joint formed by the adjacent sections of the flat web.
  • the flat web has a lower thickness in its central region than at the adjoining sections towards the lid and towards the vessel, a projecting step toward the vessel opening being provided at the section towards the vessel.
  • the edge of this step can form a guide for the projection.
  • the edge web parts on the flat web have a bulge located at the end of these edge web parts, which bulge against the opening edge flange of the vessel when the lid is in place.
  • a system is created for the flat web bent together when the lid is closed and directly for the lid insert on the one hand and not only contributes to the parallel guidance of the closed lid, but also keeps the engagement of the hook-like attachment on the graspable section.
  • the bulge can be dimensioned such that in connection with the spacer in the central region of the flat web, a certain pretension is achieved with respect to the engagement of the hook-like extension, an axial alignment of the cover being ensured in the closed state.
  • the edge of the lid has a grip projection opposite the flat web
  • the hook-like projection is provided on the edge of this grip projection and is directed downward and that the edge web passes through on the edge of the projection on which the hook-like projection is arranged .
  • the hook-like extension is expediently stiffened by at least one rib toward the grip projection.
  • the hook-like extension has a substantially U-shaped stiffening with at least two ribs towards the handle projection. This also creates a guide to the graspable portion of the opening edge of the vessel.
  • an advantageous embodiment for securing the closure lies in the fact that the hook-like attachment and the section that can be gripped under are each concavely curved and form a mutually hook-shaped connection.
  • a reaction vessel with a crenellated formation of spaced-apart projections on the underside of the edge web which is included in the preferred embodiment, has the feature that the hook-like extension is guided in a gap between two battlements in the closed state of the vessel and that the gap the width of the hook-like approach is adapted. This ensures firm engagement.
  • this essentially cylindrical seat is provided for the sealing lip and in its area the vessel wall is thinner up to the opening than in the adjoining part of the vessel wall.
  • the edge of the section that can be gripped under is on the edge flange and the hook part is curved concentrically to the axis of the vessel when the lid is closed.
  • the reaction vessel 1 which is closed at the bottom, has an upper opening 2. Its inner edge 3 widens conically upwards. The opening edge is provided with an edge flange 4. A flat web 5 extends from this edge flange and is formed in one piece with a cover 6.
  • the lid has a cylindrical wall part 7 which, according to FIG. 3, can be attached in the vessel opening 2 and, at its lower edge, with an outwardly projecting sealing lip 8, provides the seal on an essentially cylindrical seat surface 9 of the vessel. In the area of the seat 9, the vessel wall is made thinner than in the adjoining section, so that tolerances can be compensated for by adaptation.
  • the middle cover wall 10 is sunk into the cylindrical wall part. However, it is closer to the upper edge 11 of the cylindrical wall part than to the sealing lip 8. The distance to the upper edge 11 is approximately one third of the distance to the sealing lip 8.
  • the flat web 5 forms a joint in its central region 12, in which it is bent together. It has an inwardly projecting projection 13 during the bending process, which separates the joint parts 31, 32 (FIG. 3) from one another, which together form a double joint.
  • the central region 12 of the flat web 5 is made weaker than the adjoining sections 14, 15 towards the cover. This defines the bending.
  • the lid around the cylindrical wall part 7 has a flange-like outwardly directed edge 16, from which, when the cover is closed, an edge web 17 extends downwards, which in the parts in which it runs makes contact with the edge flange of the vessel opening. In other parts, the edge bridge has stabilizing effects.
  • edge web parts 19, 21 which run at the edges of the flat web 5, but which end at a distance from the projection 13 or at the border of the central area 12.
  • This edge web also extends along the edge of a grip projection 22, on which a hook-like extension 23, which is directed downward when the lid is closed, is arranged. With its hook part 24, this engages under a section 25 that can be gripped under.
  • the hook-like extension 23 On the edge flange 4 at the vessel opening 2 in the embodiment described in FIGS. 1-4, the hook-like extension 23 has on its inside a central rib 26 for stiffening or, as shown in FIG. 7 emerges, two ribs 52, 53, which practically form a type of box profile for stiffening the hook-like extension 23 with the hook part 24.
  • the lateral guidance is further improved in an advantageous embodiment of the vessel in that, as shown in FIGS. 2, 4 and 6, underneath the edge flange 4 there are provided protrusions in the form of crenellations arranged with a mutual space between them two of which are denoted by 46, 47, namely the two crenellations which are adjacent to the hook part 24 which engages between these two crenellations of the crenellated crown.
  • 4 shows, for example, parts of the two crenellations 48, 49 which are visible in the sectional view on both sides of the flat web 5 if such crenellations are arranged, as is shown more clearly in FIG. 2.
  • the battlement 46 can be seen in FIG. This also improves the guidance of the cover 6, which is centered in the sealing area on the lip 8.
  • the radial mobility between the crenellations 46 and 47 is advantageous. In one embodiment, a certain lateral mobility is also allowed between them.
  • the handle projection 22 has a central opening 27 which improves the elasticity of the handle projection and divides it toward the hook-like extension 23 into two web pieces 28, 29 which converge towards one another.
  • the edge web 17 can be interrupted on both sides of the handle projection. However, the edge web expediently goes through because, given the small dimensions, it leaves sufficient elasticity in the grip projection. The part of the edge web 32 remaining on the outer edge of the grip projection solidifies this in the outer part, so that a particular stability, is present in particular at the root of the hook-like extension 23.
  • the reinforced section 14 of the flat web 5 on the vessel 1 has a step 33 projecting towards the edge. From FIG. 3 it can be seen that when the lid is closed on the one hand the edge of this step 33 and on the other hand the adjacent ends of the web parts 19, 21 above and below on Projection 13 can form a guide if an additional load occurs. These parts also serve to determine the individual joints of the double joint.
  • the web according to FIG. 4 has a central recess 34 which, except for the facing side of the web, is designed in the form of a rounded portion, so that the described guide through the projection takes place, for example, only at its edge sections 35, 36 in the area of which the edge web parts 19, 21 are also arranged.
  • the edge web parts 19, 21 on the flat web each have a bulge 37, 38 at their end towards the cover, which can also be formed by the transition to the edge web parts 17 enclosing the cylindrical wall part 6 of the cover. This increase or bulge comes according to FIG. 3 with the lid closed directly with the edge flange 4, so that an additional guidance of the lid is achieved directly at the edge of the opening 2, apart from the parallel guidance by the projection 13 or its end parts in the area the turn.
  • the hook-like extension 23 has a support part 39 which runs essentially parallel to the cover axis and which closely encloses the section 40 of the edge flange with the section 25 which can be gripped under. Since the latter section is provided on the underside of the edge flange 4, the edge of the graspable section, which is denoted by 41 in FIG. 5, runs concentrically to the axis of the vessel. Accordingly, the support part 39 is curved when the lid is closed, and also the hook part 42.
  • This hook part and also the portion 41 that can be gripped under are concavely curved on their respective engagement sides, so that a reciprocal hook-shaped connection is present, which is also the case with a concentrically curved design of the engagement parts contributes to a special lateral guidance, in cooperation with the battlements 46, 47, which join and form a stabilizing element in connection with the double joint, but with the proviso that there is no overdetermination with the sealing lip 8 centering the cover in the closed state.
  • the supporting part 39 is provided directly on the edge flange 4, in this embodiment there are ribs on the outside of the hook-like extension 23.
  • This embodiment is a design with three ribs 43-45, which is a box-like or honeycomb-like structure for the hook-like structure Form approach 23 on the handle.
  • the hook-like approach is particularly stable on the side of the hook projection, but can be deflected in the plane of the cover wall.
  • the advantage here is that the outer ribs 44, 45 in conjunction with the battlements 46, 47 can form a system.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Closures For Containers (AREA)
  • Devices For Use In Laboratory Experiments (AREA)

Claims (11)

1. Récipient de réaction en matière plastique pour de faibles quantités de liquide, avec un couvercle (6) monté sur son ouverture (2) au moyen d'une barrette plate (5) prévue en une seule pièce, lequel couvercle présente un bord (16) dépassant vers l'extérieur qui, à l'état de fermeture, prend appui sur une section circonférentielle importante du bord de l'ouverture du récipient (1), ainsi qu'un élément de paroi cylindrique (7) pouvant être engagé dans l'ouverture (2) et d'où part, à la manière d'une bride, le bord (16) dépassant vers l'extérieur, caractérisé en ce que la barrette plate (5) est conformée, dans sa section médiane (12), sous la forme d'un joint à double cardan qui, lors de la fermeture, permet un guidage parallèle du couvercle (6) avec une libre mobilité transversale; que la hauteur du guidage parallèle est adaptée à la longueur d'un embout (23) du couvercle (6) en forme de crochet dirigé vers le bas dans le sens de la fermeture; que l'alignement du couvercle (6) est réalisé par une lèvre d'étanchéité (8) disposée sur l'extrémité de l'élément de paroi cylindrique (7) devant être engagée dans l'ouverture (2); et que, lorsque le couvercle est fermé, l'embout crochu (23, 42) passe sous une section de talon (25,41) prévue sur l'ouverture (2) du récipient, en face de la barrette plate (5).
2. Récipient de réaction selon la revendication 1, caractérisé en ce que le bord (16) du couvercle dépassant vers l'extérieur est pourvu, sur l'arête extérieure, d'une barrette latérale (17) qui s'étend vers le bas, c'est-à-dire dans la direction de l'élément de paroi cylindrique (7) et prend appui sur le bord de l'ouverture du récipient.
3. Récipient de réaction selon la revendication 2, caractérisé en ce que la barrette plate (5) présente, dans sa zone médiane (12), une saillie (13) qui, à l'état plié, dépasse vers l'intérieur et constitue un guidage parallèle et à distance des articulations du joint à double cardan (31, 32) constituées par des sections voisines de la barrette plate (5).
4. Récipient de réaction selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la barrette plate (5) comporte une section médiane (12) dont l'épaisseur est inférieure à celle des sections (14, 15) qui y font suite en direction du couvercle (6) et du récipient (1), la section (14) orientée vers le récipient comportant un gradin (33) en saillie vers le haut en direction de l'ouverture du récipient.
5. Récipient de réaction selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les éléments de barrette latérale (19, 21) qui se poursuivent sur la barrette plate (5) présentent à leurs extrémités des bombements (37, 38) qui sont appliqués contre la bride latérale (4) de l'ouverture du récipient lorsque le couvercle est mis en place.
6. Récipient de réaction selon l'une quelconque des revendications 1 à 5, sur lequel le bord du couvercle comporte, en face de la barrette plate, une saillie-poignée, caractérisé en ce que l'embout (23) en forme de crochet est prévu au bord de ladite saillie-poignée (22) et orienté vers le bas; et que la barrette latérale (17) continue au bord de l'embout auquel est disposé l'embout crochu (23).
7. Récipient de réaction selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'embout (23) en forme de crochet présente un raidisseur d'une section sensiblement en forme de U orienté vers la saillie-poignée (22) et constitué par au moins deux nervures (43 à 47).
8. Récipient de réaction selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'embout (42) en forme de crochet et la section de talon (41) sont respectivement conformés en cuvette et constituent un assemblage à crochets alternatifs.
9. Récipient de réaction selon l'une quelconque des revendications 1 à 8, avec une conformation en créneaux de saillies disposées à intervalles à la face inférieure de la barrette latérale, caractérisé en ce que l'embout crochu (23) est guidé, à l'état fermé du récipient, dans un intervalle entre deux créneaux (46, 47); et que l'intervalle est adapté à la largeur de l'embout crochu (23).
10. Récipient de réaction selon l'une quelconque des revendications 1 à 9, avec une paroi de couvercle centrale perforable et une surface de siège (9) sensiblement cylindrique dont le bord intérieur (3) s'évase de manière conique vers le haut et dans laquelle peut être engagé l'élément de paroi cylindrique (7) du couvercle, caractérisé en ce que cette surface de siège (9) sensiblement cylindrique est destinée à la lèvre d'étanchéité (8) et que, dans la région de ladite surface de siège, la paroi du récipient jusqu'à l'ouverture (2) est plus mince que la section de la paroi du récipient qui y fait suite.
11. Récipient de réaction selon l'une quelconque des revendications 1, 6, 8 et 9, caractérisé en ce que la section de talon (25, 41) sur la bride latérale (4) et l'élément crochu (24, 42) sont respectivement courbés concentriquement par rapport à l'axe du récipient lorsque le couvercle est fermé.
EP84115399A 1984-01-24 1984-12-13 Eprouvette synthétique pour de faibles quantités de liquide Expired - Lifetime EP0149797B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115399T ATE40310T1 (de) 1984-01-24 1984-12-13 Reaktionsgefaess aus kunststoff fuer kleine fluessigkeitsmengen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3402276 1984-01-24
DE3402276A DE3402276C1 (de) 1984-01-24 1984-01-24 Reaktionsgefaess aus Kunststoff fuer kleine Fluessigkeitsmengen

Publications (4)

Publication Number Publication Date
EP0149797A2 EP0149797A2 (fr) 1985-07-31
EP0149797A3 EP0149797A3 (en) 1985-10-09
EP0149797B1 true EP0149797B1 (fr) 1989-01-25
EP0149797B2 EP0149797B2 (fr) 1992-01-02

Family

ID=6225726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115399A Expired - Lifetime EP0149797B2 (fr) 1984-01-24 1984-12-13 Eprouvette synthétique pour de faibles quantités de liquide

Country Status (5)

Country Link
US (1) US4713219A (fr)
EP (1) EP0149797B2 (fr)
JP (1) JPS60183362A (fr)
AT (1) ATE40310T1 (fr)
DE (2) DE3402276C1 (fr)

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Publication number Publication date
ATE40310T1 (de) 1989-02-15
EP0149797A3 (en) 1985-10-09
JPH0431945B2 (fr) 1992-05-27
EP0149797B2 (fr) 1992-01-02
DE3476345D1 (en) 1989-03-02
DE3402276C1 (de) 1985-02-21
JPS60183362A (ja) 1985-09-18
US4713219A (en) 1987-12-15
EP0149797A2 (fr) 1985-07-31

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