EP0894071A1 - Bouchon pour fermer un recipient - Google Patents

Bouchon pour fermer un recipient

Info

Publication number
EP0894071A1
EP0894071A1 EP97906974A EP97906974A EP0894071A1 EP 0894071 A1 EP0894071 A1 EP 0894071A1 EP 97906974 A EP97906974 A EP 97906974A EP 97906974 A EP97906974 A EP 97906974A EP 0894071 A1 EP0894071 A1 EP 0894071A1
Authority
EP
European Patent Office
Prior art keywords
cap
guideway
beads
horizontal section
sections
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.)
Withdrawn
Application number
EP97906974A
Other languages
German (de)
English (en)
Inventor
Georg Pfefferkorn
Udo Bösl
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.)
Crown Cork AG
Original Assignee
Crown Cork AG
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
Application filed by Crown Cork AG filed Critical Crown Cork AG
Publication of EP0894071A1 publication Critical patent/EP0894071A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1672—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by manual actuation of the closure or other element
    • B65D51/1688—Venting occurring during initial closing or opening of the container, by means of a passage for the escape of gas between the closure and the lip of the container mouth, e.g. interrupted threads

Definitions

  • a disadvantage of such known closure arrangements is that both the formation of threads on the inside of the closure cap and on the outside of the container mouth necessitates large wall pieces and thus a greater use of material, and accordingly entails high production costs.
  • Another disadvantage is that the closure cap always has to be partially opened, so that the thread partially disengages before the pressure equalization takes place. As a result, the closure cap is no longer fully engaged with the container mouth at the time of pressure equalization, which means that there is a risk that the closure cap will be blown off via the thread.
  • the object of the present invention is to avoid the disadvantages of the known, in particular to create a closure cap for closing a container with increased internal pressure, which can be produced easily and with little material consumption and nevertheless early release of the closure cap during the Opening process reliably prevented.
  • the closure cap for closing a container with increased internal pressure essentially consists of a cap base and a cap wall, which is provided on its inside with a guideway of a bayonet thread.
  • the guideway can be brought into engagement with retaining cams on the outside of the container mouth and has a detent position for releasing the gas before the cap is finally unscrewed.
  • the locking position of the guideway is formed by at least one locking edge.
  • the latching edge limits the unscrewing movement in such a way that the guideway engages with the entire retention surface of the retention cams on the container mouth during the entire gas release process. Thanks to the locking edge, it is not possible to move the closure cap over the locking position during the opening process before a complete pressure equalization has taken place.
  • the guideway can be formed, for example, by two or more beads protruding inwards from the inside of the cap wall.
  • the surface of these beads facing the cap base forms the retention surface with which the closure cap interacts with the retention cams on the outside of the container mouth.
  • the guideway is defined between this surface and the side of an adjacent bead facing away from the cap bottom.
  • the guideway is defined by four beads, ie the guideway consists of four individual partial tracks. One track is enclosed between two beads.
  • the retaining cams are guided in a precisely defined manner during the screwing-on or opening process. This also reliably eliminates the risk of canting.
  • Each bead extends over a winding area of approximately 160-200 °, preferably 180 °. With an even arrangement of the four beads on the circumference, there is an overlap of two adjacent ones Beads of about 90 °.
  • each bead is formed by four sections. Two of these sections have no slope and are horizontal, i.e. parallel to the bottom of the cap. The other two sections have an incline. This slope is necessary to press the closure from the open position into a sealing position.
  • a sealing position is defined.
  • a gas release position is defined by the second horizontal section.
  • the two horizontal sections are connected with a sloping section, so that when the cap is screwed on between the gas release position and the sealing position, the necessary sealing pressure can be achieved by the slope.
  • the second sloping section is arranged at the beginning of each bead and enables the retention cams to be inserted easily into the guideways.
  • the latching edge is preferably arranged at the end of the second horizontal section remote from the first horizontal section. So that the unscrewing movement of the closure cap is stopped until a complete pressure equalization is achieved, the locking edge is arranged on the surface facing the cap base of at least one bead.
  • each individual bead is preferably provided with such a locking edge.
  • the second horizontal section is advantageously longer than the first horizontal section is formed.
  • the length of the second horizontal section defines the angular range of the rotary movement at which gas is released before the unscrewing movement is interrupted.
  • each bead can be provided with a recess on an underside facing away from the cap base in the region of the latching edge of the bead located below it. This additionally increases the guidance of the retaining cams in the guideway. In this way, the distance between the horizontal sections of two adjacent beads can be selected such that the space corresponds to the thickness of the retaining cams of the container to be closed.
  • FIG. 1 shows a schematic representation of a closure cap according to the invention and a container mouth
  • FIG. 2 cross section through a closure cap according to the invention
  • FIG. 3 development of the inside of the closure cap from FIG. 2,
  • FIG. 4 an enlarged section of the development from FIG. 3, FIG. 5a development with indicated retention cams in the sealing position,
  • Figure 2 shows a cross section through a closure cap according to the invention.
  • the locking edge 9 limiting the unscrewing movement is clearly visible.
  • the closure cap 1 also has a sealing lip 17.
  • the distance between two adjacent beads 11 is not constant over their entire length. In an area 16 of the inclined sections 13a, 13c, the distance between the beads 11 is greater than in an area 15 with the horizontal sections 13b, 13d. This is necessary so that a somewhat elongated retaining cam (cam 7 as shown in FIG. 1) does not become jammed in the region 16 of the sections 13a, 13c which run with an incline.
  • the minimum distance between two adjacent beads 11 is defined by the locking edge 9.
  • FIGS. 5a and 5c show a development of the inside of a closure cap according to the invention with schematically shown placed retention cams 7 of a container closure in a sealing position ( Figure 5a) and in a gas release position ( Figure 5b).
  • the horizontal sections 13d engage the retaining cams 7.
  • an end section 20 follows each of the horizontal sections 13d.
  • the end section 20 is here also designed as a bevel, so that a precisely defined guideway 6 is formed together with the bevel section 13c underneath. In principle, however, it is conceivable to form the end section 20 vertically.
  • the retaining cams 7 are guided from the sealing position shown in FIG. 5a to the venting position shown in FIG. 5b.
  • the entire closure cap that is to say also the sealing device (not shown here) is raised by the sections 13c which run with an incline, which results in gas release when the internal pressure is increased.
  • the movement of the retaining cams 7 is limited by the locking edges 9.
  • the beads 11, with their surface facing the cap bottom are pressed firmly against the retaining tabs 7 by the internal pressure. Only when the internal pressure has been completely reduced can the closure cap be pressed down slightly, which allows the locking edges 9 to be overcome.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention concerne un bouchon servant à fermer des récipients à pression intérieure élevée. Ce capuchon comprend essentiellement une base (3) et une paroi (4) fixée dessus. Sur la face intérieure de la paroi du capuchon, il est prévu une glissière (6) sous forme de filet à baïonnette à l'aide de laquelle le capuchon de fermeture (1) peut être mis en contact avec des cames d'arrêt (7) sur la surface extérieure (8) de l'embouchure (2) d'un récipient. La glissière (6) comporte une arête de blocage (9) qui limite le mouvement de desserrage de manière que pendant tout le processus d'évacuation du gaz, la glissière (6) demeure en contact avec l'ensemble de la surface d'arrêt (10) des cames d'arrêt (7), lors de l'ouverture du récipient.
EP97906974A 1996-04-04 1997-03-26 Bouchon pour fermer un recipient Withdrawn EP0894071A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH880/96 1996-04-04
CH88096 1996-04-04
PCT/CH1997/000126 WO1997037901A1 (fr) 1996-04-04 1997-03-26 Bouchon pour fermer un recipient

Publications (1)

Publication Number Publication Date
EP0894071A1 true EP0894071A1 (fr) 1999-02-03

Family

ID=4197335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97906974A Withdrawn EP0894071A1 (fr) 1996-04-04 1997-03-26 Bouchon pour fermer un recipient

Country Status (4)

Country Link
EP (1) EP0894071A1 (fr)
AU (1) AU1920297A (fr)
CA (1) CA2248681A1 (fr)
WO (1) WO1997037901A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29803275U1 (de) 1998-02-25 1998-04-16 Trw Fahrwerksyst Gmbh & Co Verschluß für Behälter
US7523839B2 (en) * 2004-04-08 2009-04-28 The Glad Products Company Ventable spin lock container
JP6456216B2 (ja) 2015-02-27 2019-01-23 株式会社吉野工業所 ねじ式キャップ容器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741421A (en) * 1971-05-10 1973-06-26 J Wittwer Safety locking cap
US4553678A (en) * 1984-06-21 1985-11-19 Thorsbakken Arden L Tamper indicating container safety cover
DE8903630U1 (de) * 1989-03-22 1989-08-24 Coolike-Regnery GmbH, 64625 Bensheim Behältnis mit Halterung
US5135124A (en) * 1991-05-09 1992-08-04 Hoover Universal, Inc. Pressure lock bayonet closure
GB9316834D0 (en) * 1993-08-13 1993-09-29 Beeson & Sons Ltd Container closure assembly
GB9407501D0 (en) * 1994-04-15 1994-06-08 Birkett Harold Improved closure for pressure & non-pressurised container

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9737901A1 *

Also Published As

Publication number Publication date
CA2248681A1 (fr) 1997-10-16
WO1997037901A1 (fr) 1997-10-16
AU1920297A (en) 1997-10-29

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