EP0149797A2 - Eprouvette synthétique pour de faibles quantités de liquide - Google Patents

Eprouvette synthétique pour de faibles quantités de liquide Download PDF

Info

Publication number
EP0149797A2
EP0149797A2 EP84115399A EP84115399A EP0149797A2 EP 0149797 A2 EP0149797 A2 EP 0149797A2 EP 84115399 A EP84115399 A EP 84115399A EP 84115399 A EP84115399 A EP 84115399A EP 0149797 A2 EP0149797 A2 EP 0149797A2
Authority
EP
European Patent Office
Prior art keywords
edge
hook
opening
lid
web
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
EP84115399A
Other languages
German (de)
English (en)
Other versions
EP0149797B1 (fr
EP0149797B2 (fr
EP0149797A3 (en
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
Eppendorf Geraetebau Netheler and 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6225726&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0149797(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eppendorf Netheler Hinz GmbH, Eppendorf Geraetebau Netheler and 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
Publication of EP0149797B1 publication Critical patent/EP0149797B1/fr
Application granted granted Critical
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 flexible flat web provided in one piece with the opening and an outwardly projecting edge which comes into contact with the opening edge of the vessel over a substantial circumferential section, and with a into the opening insertable cylindrical wall part, from which the outwardly projecting edge extends flange-like, and at the end to be inserted into the opening a sealing lip is arranged on the outside.
  • reaction vessels in which the outwardly projecting edge has an edge web which runs downward at the edge edge, ie in the direction of the cylindrical wall part, and which comes into contact with the opening edge of the vessel.
  • Reaction vessels with a lid are known from DE OS 17 73 331. Such closures have considerable advantages due to the captive cover.
  • the cover has a cylindrical wall part which can be inserted into the opening and from which the outwardly projecting edge extends in a flange-like manner.
  • the outwardly protruding edge of the lid has a grip projection opposite the flat web.
  • the vessel opening is funnel-shaped at its edge on the inside upwards so that the cylindrical wall part can be smoothly inserted, which may come into contact with an essentially sealing lip on the essentially cylindrical seat surface outside the outer opening edge of the vessel .
  • An edge web as described above serves as a spacer and guide for the lid at the opening edge of the reaction vessel and contributes to the dimensional stability.
  • the invention is therefore based on the object of improving a reaction vessel of the type specified at the outset 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 bring about an additional securing of the closed lid becomes.
  • an edge flange at the vessel opening opposite the flat web has a graspable section and on the lid a hook-like extension is arranged in the closed position downwards, which engages under the section when the lid is closed, and that the flat web in its central region is provided as a joint.
  • Such hakenarti he g shutter is automatically when the lid due to an external slope of the hook-like projection engages.
  • the hook-like approach is designed so that it is the graspable Section around the edge flange at the vessel opening tightly and at the same time a side guide for the lid is created.
  • the additional securing by the hook-like approach leads to a relief in the sealing area, i.e. on the sealing lip of the closed lid, that lateral movements can be absorbed to a certain extent.
  • the guidance through the flat web on the one hand and the engagement of the hook-like attachment on the other hand have a stabilizing effect, but the joint permits adjustment.
  • a parallel guidance of the cover through the edge web is provided in free transverse mobility by the joint designed as a double joint and the height of the parallel guide is matched to the length of the hook-like extension, and the alignment of the cover is carried out while maintaining the seal by the cylindrical wall part arranged sealing lip.
  • 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 ledge.
  • 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.
  • the bulge can be dimensioned such that in connection with the spacer in the central region of the flat web, a certain pretension with respect to the engagement of the hook-like approach is achieved, wherein an axial alignment of the lid is ensured in the closed state.
  • the projection on the flat web advantageously has a central recess, so that the system is only provided in the edge areas. This simplifies the adaptation by reducing the contact areas.
  • 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 . In this way, while maintaining a certain elasticity of the grip projection, its guide stability for the hook-like approach is improved and stabilized.
  • the resilience of the grip projection with a side-stable design is advantageously further improved by an opening in the grip projection, so that the end with the hook-like attachment is held by at least two web pieces forming the projection.
  • the hook-like extension is expediently stiffened by at least one rib toward the grip projection.
  • this rib When arranged internally, this rib also forms a guide to the graspable section at the opening edge of the vessel due to the stiffening of the hook arrangement.
  • an advantageous, side-stable design of the hook-like extension lies in an essentially U-shaped stiffening with two ribs. This practically creates a box profile.
  • a middle rib is arranged on the outside.
  • the hook-like approach has a substantially parallel to the lid axis supporting part that runs with the lid closed directly on the outer edge of the graspable section and tightly surrounds the adjacent portion of the edge flange.
  • a useful embodiment is that the hooklike extension and the under tangible 'section come to the engaging side into engagement with the undercut. This improves the fit, in particular of the hook-like attachment which is designed to be stable on the side.
  • An expedient embodiment lies in the fact that the hook-like attachment and the portion that can be gripped under are concavely curved and form a mutually hook-shaped connection. This still allows certain evasive movements.
  • the engagement surfaces on the hook-shaped attachment and the portion that can be gripped under consist of surfaces that are at an angle to one another in the open state. This also improves the engagement, in particular in a direction radial to the vessel axis.
  • a reaction vessel with a crenellated formation of spaced-apart projections p 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.
  • the engagement part of the hook-like extension (with the lid closed) and the outer edge of the portion that can be gripped under have concentrically curved edges concentric to the central axis of the vessel, which contribute to stabilizing the lid seat.
  • An advantageous embodiment lies in the fact that the edge of the graspable section on the edge flange and the hook part are each curved concentrically to the axis of the vessel when the lid is closed.
  • the guiding effect is particularly effective in an embodiment in which the hook-like extension and the graspable section on the engagement side are each concavely curved and there is a mutual hook-shaped connection.
  • the middle cover wall can be perforated in a manner known per se, for example also in the form of a film. However, it is preferred that this cover wall is arranged within the cylindrical wall part, but in the vicinity of the upper edge of this cylindrical wall part when the cover is closed.
  • An advantageous embodiment provides that a substantially cylindrical seat surface is provided for the sealing lip on the cylindrical wall part of the cover and in its area the vessel wall is made thinner up to the opening than at the adjoining section.
  • An adaptation to the sealing lip is also possible using the parallel guidance mentioned between the parts that come into engagement.
  • the vessel is designed in the region of the opening with an inner edge that widens conically upwards, which facilitates the introduction with a tight fit.
  • 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 an. the parts of which have a stabilizing effect on the edge bridge.
  • 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 directed downwards 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 which remains on the outer edge of the grip projection solidifies this in the outer part, so that there is particular stability, 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 with the lid 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 can form a guide on the projection 13 '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 guidance by 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 have on their At the end towards the cover there is a bulge 37, 38, 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 in accordance with 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 adjoin and form a stabilizing element in connection with the double joint, but with the proviso that no overdetermination with the Cover in the closed state centering sealing lip 8 is carried out.
  • 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.

Landscapes

  • 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)
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
DE3402276A DE3402276C1 (de) 1984-01-24 1984-01-24 Reaktionsgefaess aus Kunststoff fuer kleine Fluessigkeitsmengen
DE3402276 1984-01-24

Publications (4)

Publication Number Publication Date
EP0149797A2 true EP0149797A2 (fr) 1985-07-31
EP0149797A3 EP0149797A3 (en) 1985-10-09
EP0149797B1 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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WO1995011083A2 (fr) * 1993-10-22 1995-04-27 Abbott Laboratories Tube de reaction et methode d'utilisation de celui-ci minimisant les contaminations

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US2958439A (en) * 1959-04-29 1960-11-01 Donald E Yochem Container and closure
DE1275795B (de) * 1963-01-28 1968-08-22 Eppendorf Geraetebau Netheler Reaktionsgefaess fuer kleine Fluessigkeitsmengen
US3593909A (en) * 1968-05-02 1971-07-20 Eppendorf Geraetebau Netheler Reaction vessel closure
US4022352A (en) * 1976-04-26 1977-05-10 Pehr Harold T Container cover and safety closure

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US4158902A (en) * 1977-09-30 1979-06-26 Chernack Milton P Integral snap action hinge
US4414705A (en) * 1981-07-17 1983-11-15 Ethyl Products Company Overcenter hinge

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US2958439A (en) * 1959-04-29 1960-11-01 Donald E Yochem Container and closure
DE1275795B (de) * 1963-01-28 1968-08-22 Eppendorf Geraetebau Netheler Reaktionsgefaess fuer kleine Fluessigkeitsmengen
US3593909A (en) * 1968-05-02 1971-07-20 Eppendorf Geraetebau Netheler Reaction vessel closure
US4022352A (en) * 1976-04-26 1977-05-10 Pehr Harold T Container cover and safety closure

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GB2213743B (en) * 1988-01-13 1992-02-05 Diekmann Dr Stephan Separation or reaction column unit
US5270011A (en) * 1990-11-19 1993-12-14 Ralph Altherr Plastic reaction vessel for small liquid volumes
DE4139810A1 (de) * 1991-12-03 1993-06-09 Eppendorf - Netheler - Hinz Gmbh, 2000 Hamburg, De Deckelgefaess
WO1995011083A2 (fr) * 1993-10-22 1995-04-27 Abbott Laboratories Tube de reaction et methode d'utilisation de celui-ci minimisant les contaminations
WO1995011083A3 (fr) * 1993-10-22 1995-08-31 Abbott Lab Tube de reaction et methode d'utilisation de celui-ci minimisant les contaminations

Also Published As

Publication number Publication date
JPS60183362A (ja) 1985-09-18
EP0149797B1 (fr) 1989-01-25
DE3476345D1 (en) 1989-03-02
EP0149797B2 (fr) 1992-01-02
JPH0431945B2 (fr) 1992-05-27
ATE40310T1 (de) 1989-02-15
DE3402276C1 (de) 1985-02-21
US4713219A (en) 1987-12-15
EP0149797A3 (en) 1985-10-09

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