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EP0194923B1 - Pilot capsule and closure for the mouth piece of a gas bottle - Google Patents

Pilot capsule and closure for the mouth piece of a gas bottle Download PDF

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Publication number
EP0194923B1
EP0194923B1 EP86400447A EP86400447A EP0194923B1 EP 0194923 B1 EP0194923 B1 EP 0194923B1 EP 86400447 A EP86400447 A EP 86400447A EP 86400447 A EP86400447 A EP 86400447A EP 0194923 B1 EP0194923 B1 EP 0194923B1
Authority
EP
European Patent Office
Prior art keywords
mouth
tongue
skirt
cylindrical part
orifice
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
EP86400447A
Other languages
German (de)
French (fr)
Other versions
EP0194923A1 (en
Inventor
Jean-François Turinetto
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.)
Antargaz Distribution de Gaz SA
Original Assignee
Elf Antargaz
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 Elf Antargaz filed Critical Elf Antargaz
Priority to AT86400447T priority Critical patent/ATE45024T1/en
Publication of EP0194923A1 publication Critical patent/EP0194923A1/en
Application granted granted Critical
Publication of EP0194923B1 publication Critical patent/EP0194923B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/05—Vessel or content identifications, e.g. labels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0736—Capsules, e.g. CO2

Definitions

  • the present invention relates to control and closure capsules for mouths of bottles of the type containing gas under pressure.
  • FR-A-2 134.252 describes and illustrates a safety shutter for the outlet end of a tap for a liquefied gas cylinder.
  • This shutter is a capsule made of thermoplastic material. Two sealing stages are not provided in the capsule structure according to this cited document.
  • FR-A-2 391.402 describes and illustrates a metal closure cap fitted internally with a plastic seal.
  • the plastic seal has a stepped profile comprising a central part. This structure does not have two sealing stages.
  • FR-A-2 228 682 describes and illustrates a plastic capsule, the essential characteristic of which is to include one or more rupture lines forming an integral part of the release tab or of the capsule.
  • FR-A-2 163 324 describes and illustrates a plastic plug whose tearing member is in the form of a ring provided at the end of a tab which is attached to the upper part of the outer skirt of the plug along a certain arc of its periphery.
  • the present invention now provides another type of capsule which also guarantees the inviolability and the tightness of the mouth of a gas cylinder.
  • the capsule according to the invention has the advantage of being produced in a single piece, in one piece, and on the one hand constituting a true witness which guarantees the conservation of the bottle in its original state, and on the other hand, an effective shutter against the risk of accidental leaks.
  • Another object of the invention is to provide a capsule which achieves two levels of tightness; a permanent primary seal resulting from the placing of the capsule on the mouth and an automatic secondary seal in the event of accidental opening of the valve; this second seal reinforcing and completing the primary seal.
  • the invention also aims to produce a capsule which has two sealing stages in order to be able to adapt to different types of gas bottle mouths and in particular to mouths with an orifice provided either with a cylindrical seal or with a ball valve which regulates the operating pressure.
  • a portion of the skirt constitutes, between two thinnings along generatrices, a tongue extending, beyond the skirt by a tearing ring arranged in a plane substantially inclined relative to said tongue , said ring allowing the capsule to be released from the mouth.
  • the tongue is extended, beyond the skirt by a tab arranged in a parallel plane and slightly offset towards the outside, relative to the tongue.
  • a buttress is arranged between the tongue and the tab, to increase the stiffness of said tab relative to said tongue.
  • the deformability of the capsule material is such that its removal from the mouth of the bottle by simple axial displacement is practically impossible without visible deterioration of said capsule.
  • the removal of the capsule by rotation is also made impossible without visible deterioration by means of a tab which extends beyond the skirt and in a plane tangential to the latter; said tab constitutes the extension of a second tearing tab diametrically opposite to the first tab provided with the grip ring.
  • the central projection has an axial cavity open on the inside of the orifice; this cavity extends over the entire length of the projection and the cylindrical wall of the latter is such that, when the cavity becomes subjected to the internal pressure of the bottle, this results in a radial expansion of said cylindrical wall sufficient to cause an increase corresponding sealing.
  • the capsule shown in FIG. 1 is first of all made up of a cylindrical skirt 1 and a bottom 2 bordering the skirt 1.
  • the internal wall of the bottom 2 has a projection 6 which extends axially over the entire depth of the capsule.
  • the projection 6 consists of a circular sole 7, a first cylindrical part 8 and a second cylindrical part 9 of reduced diameter ending in the form of a spherical zone 10.
  • the projection 6 also has an axial cavity 11, which extends from the bottom 2. This cavity 11 is open on the side opposite the bottom 2 and it has an ogival shape obtained directly from molding.
  • the capsule is made in one piece, in an elastically deformable plastic material so that, on the one hand, it can be put in place by forced fitting of the protruding parts of the skirt 1 onto the male thread of the mouth 12, up to the abutment of the annular internal face of the bottom 2 on the edge of said mouth 12 and, on the other hand, allow a radial deformation, by expansion, of the projection 6 when there prevails, in the cavity 11, a gas pressure as in the bottle.
  • Figure 2 shows, in section, a capsule according to the invention arranged by forced fitting on the mouth 12 of a valve body 13 of a gas bottle, not shown, the internal part of the bottom 2 being in abutment on said mouth.
  • the orifice 14a of the mouth 12 is of the cylindrical type and contains a seal 15 the thickness of which is substantially greater than the thickness of the capsule at the level of the skirt 1.
  • This seal 15 has a cylindrical bore 16 in which partially penetrates at the time of the fitting of the capsule on the mouth 12, the first cylindrical part 8 of the projection 6, thus making a seal.
  • the seal 15 is slightly compressed in the orifice 14 of the mouth 12, by the sole 7 whose diameter is slightly less than that of the orifice 14 and the thickness substantially equal to half that of the bottom 2.
  • the edge of the cylindrical part 8 is located almost half the length of the cylindrical bore 16 of the seal 15.
  • FIG. 3 presents a capsule placed on a mouth 12, the orifice 14b of which contains a device 17 for regulating a ball.
  • This device 17 comprises a wall 18 which is perpendicular to the axis of the orifice 14b and which is provided with an axial bore 19 for the passage of gas on the one hand, and the stop of the regulating ball 20 , on the other hand.
  • the capsule is force fitted on the mouth 12 and the internal part of the bottom 2 is positioned in abutment on said mouth.
  • the extreme part of the protrusion 6, that is to say the spherical zone 10 and the cylindrical part 9 penetrate into the bore 19 of the wall 18.
  • the ball 20 is positioned, by gravity, in the device 17.
  • the cavity 10 of the projection is directly open on the regulating device 17 and upstream of the mouth 12.
  • the pressure which prevails in the cavity 11 causes a radial deformation and an expansion of the wall of said cavity 11 at the level of the cylindrical part 9 and of the spherical zone 11 in contact with the bore 19. This elastic expansion is found, less accentuated, FIG. 2, at the level of the cylindrical part 8 in contact with the cylindrical bore 16 of the seal 15.
  • Figure 4 shows the outer shape of a capsule fitted on the mouth 12 of a valve body 13.
  • the fitting of the capsule is carried out in a precise orientation to position the tearing ring 4 and the tab 5 laterally, against the body 13 of the valve.
  • the tab 5 extends the tongue 3 which is disposed between two thinning operations 21 performed on generators on the skirt 1.
  • the tab 5 is located in a parallel plane but slightly offset towards the outside with respect to the tongue 3, FIG. 1.
  • the offset is the seat of a buttress 22 tangentially connected to the upper part of the tongue 3 and to the tab 5.
  • This buttress 22 accentuates the rigidity of the tab 5 relative to the tongue 3 to facilitate the tearing of the thinning 21 on the part and on the other side of said tongue 3.
  • This stiffness of the tab 5 relative to the tongue 3 prevents any rotation of the capsule on the threaded mouth 12, except to cause tearing of the thinning 21.
  • the tear-off ring 4 extends the tongue 3 disposed between two thinning operations 21 carried out along generatrices of the skirt 1.
  • the ring 4 is located in a plane slightly inclined relative to the tongue, at an angle of the order of 30 °, fig. 1.
  • a buttress 22 is also arranged tangentially between the tongue 3 and the ring 4 to avoid tearing of said ring 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Tubes (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

1. Tamper-proof sealing cap of the one-piece type, intended for covering the mouth of a compressed-gas bottle and comprising : - a peripheral skirt (1) having projections directed inwards and intended for interacting with the male thread of the mouth (12), - a bottom (2) bordering the skirt (1), and - a central projection (6) which extends from the bottom (2) and enters the interior of the orifice (14) of the mouth and which has a cylindrical part capable of penetrating forcibly into a bore located inside the orifice (14), the projection (6) having a sealing stage consisting of a bolster (7) arranged on the inner wall of the bottom (2) an extended by a first cylindrical part (8), characterized in that the central projection (6) comprises a second sealing stage consisting of a second cylindrical part (9) terminating in a spherical zone (10) and, with a smaller diameter, extending the first cylindrical part, these two sealing stages being capable of interacting respectively with a mouth (12), the orifice (14) of which is provided either with a gasket (15) or with a pressure-regulating device (17).

Description

La présente invention concerne les capsules témoins et d'obturation pour bouches de bouteilles du type contenant du gaz sous pressions.The present invention relates to control and closure capsules for mouths of bottles of the type containing gas under pressure.

Cette double exigence d'inviolabilité et d'obturation des bouteilles a conduit à des solutions comme celles décrites dans le brevet FR-A-2.442.194 de la Demanderesse, c'est-à-dire une capsule constituée d'une part, d'une jupe sertie sur la bouche de la bouteille, et munie d'une languette d'arrachement et, d'autre part, d'une partie recouvrant l'orifice de la bouche; cette dernière partie comportant des moyens propres à assurer son indéformabilité dans la direction selon laquelle s'exerce la pression du gaz contenu dans la bouteille, en cas notamment d'ouverture accidentelle du robinet de fermeture normale de ladite bouteille.This double requirement of inviolability and sealing of the bottles has led to solutions such as those described in patent FR-A-2,442,194 of the Applicant, that is to say a capsule consisting on the one hand, of 'a skirt set on the mouth of the bottle, and provided with a tear-off tab and, on the other hand, a part covering the orifice of the mouth; this latter part comprising means capable of ensuring its non-deformability in the direction in which the pressure of the gas contained in the bottle is exerted, in particular in the event of accidental opening of the normal closing valve of said bottle.

FR-A-2 134.252 décrit et illustre un obturateur de sécurité pour embout de sortie de robinet de bouteille de gaz liquéfié. Cet obturateur est une capsule en matière thermoplastique. Il n'est pas prévu deux étages d'étanchéité dans la structure de la capsule selon ce document cité.FR-A-2 134.252 describes and illustrates a safety shutter for the outlet end of a tap for a liquefied gas cylinder. This shutter is a capsule made of thermoplastic material. Two sealing stages are not provided in the capsule structure according to this cited document.

FR-A-2 391.402 décrit et illustre une capsule de bouchage métallique garnie intérieurement d'un joint en matière plastique. Le joint en matière plastique présente un profil en escalier comprenant une partie centrale. Cette structure ne comporte pas deux étages d'étanchéité.FR-A-2 391.402 describes and illustrates a metal closure cap fitted internally with a plastic seal. The plastic seal has a stepped profile comprising a central part. This structure does not have two sealing stages.

FR-A-2 228 682 décrit et illustre une capsule en matière plastique dont la caractéristique essentielle est de comporter une ou plusieur lignes de rupture faisant partie intégrante de la languette de dégagement ou de la capsule.FR-A-2 228 682 describes and illustrates a plastic capsule, the essential characteristic of which is to include one or more rupture lines forming an integral part of the release tab or of the capsule.

FR-A-2 163 324 décrit et illustre un bouchon en matière plastique dont l'organe d'arrachage est sous la forme d'un anneau prévu à l'extrémité d'une patte qui se rattache à la partie supérieure de la jupe extérieure du bouchon le long d'un certain arc de son pourtour.FR-A-2 163 324 describes and illustrates a plastic plug whose tearing member is in the form of a ring provided at the end of a tab which is attached to the upper part of the outer skirt of the plug along a certain arc of its periphery.

La présente invention propose maintenant un autre type de capsule qui garantit également l'inviolabilité et l'étanchéité de la bouche d'une bouteille de gaz.The present invention now provides another type of capsule which also guarantees the inviolability and the tightness of the mouth of a gas cylinder.

La capsule, selon l'invention, présente l'avantage d'être réalisée de façon monobloc, d'une seule pièce, et de constituer d'une part un véritable témoin qui garantit la conservation de la bouteille en son état d'origine, et d'autre part, un obturateur efficace contre les risques de fuites accidentelles.The capsule according to the invention has the advantage of being produced in a single piece, in one piece, and on the one hand constituting a true witness which guarantees the conservation of the bottle in its original state, and on the other hand, an effective shutter against the risk of accidental leaks.

Un autre objet de l'invention est de proposer une capsule qui réalise deux niveaux d'étanchéité; une étanchéité primaire permanente résultant de la mise en place de la capsule sur la bouche et une étanchéité secondaire automatique en cas d'ouverture accidentelle du robinet; cette seconde étanchéité venant renforcer et compléter l'étanchéité primaire.Another object of the invention is to provide a capsule which achieves two levels of tightness; a permanent primary seal resulting from the placing of the capsule on the mouth and an automatic secondary seal in the event of accidental opening of the valve; this second seal reinforcing and completing the primary seal.

L'invention vise encore à réaliser une capsule qui comporte deux étages d'étanchéité pour pouvoir s'adapter à différents types de bouches de bouteilles de gaz et notamment à des bouches avec un orifice muni soit d'un joint cylindrique, soit d'un clapet à bille qui réalise une régulation de la pression d'utilisation.The invention also aims to produce a capsule which has two sealing stages in order to be able to adapt to different types of gas bottle mouths and in particular to mouths with an orifice provided either with a cylindrical seal or with a ball valve which regulates the operating pressure.

La capsule, selon l'invention, se présente sous la forme d'un corps monobloc destiné à coiffer la bouche de la bouteille de gaz, et qui comporte:

  • - une jupe périphérique qui présente des saillants dirigés vers l'intérieur et destinés à coopérer avec le filetage mâle de la bouche;
  • - un fond bordant la jupe et
  • - un saillant central partant du fond, qui pénètre à l'intérieur de l'orifice de la bouche et qui comprend une partie cylindrique capable de pénétrer à force dans un alésage situé à l'intérieur dudit orifice; cette capsule est réalisée en une matière plastique élastiquement déformable et le saillant comporte un étage d'étanchéité constitué par une semelle disposée sur la paroi interne du fond et prolongée par une première partie cylindrique; ladite capsule étant caractérisée en ce que le saillant central comporte un deuxième étage d'étanchéité constitué par une seconde partie cylindrique se terminant par une zone sphérique, et qui prolonge, avec un diamètre plus faible, la première partie cylindrique; ces deux étages d'étanchéité étant capables de coopérer respectivement avec une bouche dont l'orifice est muni soit d'un joint d'étanchéité soit d'un dispositif de régulation de pression.
The capsule according to the invention is in the form of a single-piece body intended to cover the mouth of the gas bottle, and which comprises:
  • - A peripheral skirt which has projecting inwards directed and intended to cooperate with the male thread of the mouth;
  • - a bottom bordering the skirt and
  • - A central projection starting from the bottom, which penetrates inside the orifice of the mouth and which comprises a cylindrical part capable of forcing into a bore located inside said orifice; this capsule is made of an elastically deformable plastic and the projection has a sealing stage consisting of a sole disposed on the inner wall of the bottom and extended by a first cylindrical part; said capsule being characterized in that the central projection comprises a second sealing stage constituted by a second cylindrical part ending in a spherical zone, and which extends, with a smaller diameter, the first cylindrical part; these two sealing stages being capable of cooperating respectively with a mouth, the orifice of which is provided either with a seal or with a pressure regulation device.

Selon une réalisation de l'invention, une portion de la jupe constitue, entre deux amincissements selon des génératrices, une languette se prolongeant, au-delà de la jupe par un anneau d'arrachement disposé dans un plan sensiblement incliné par rapport à ladite languette, ledit anneau permettant de libérer la capsule de la bouche.According to one embodiment of the invention, a portion of the skirt constitutes, between two thinnings along generatrices, a tongue extending, beyond the skirt by a tearing ring arranged in a plane substantially inclined relative to said tongue , said ring allowing the capsule to be released from the mouth.

Selon une autre réalisation de l'invention, la languette se prolongue, au-delà de la jupe par une patte disposée dans un plan parallèle et légèrement décalé vers l'extérieur, par rapport à la languette.According to another embodiment of the invention, the tongue is extended, beyond the skirt by a tab arranged in a parallel plane and slightly offset towards the outside, relative to the tongue.

Selon une autre réalisation de l'invention, un contrefort est disposé entre la languette et la patte, pour accroître la raideur de ladite patte par rapport à ladite languette.According to another embodiment of the invention, a buttress is arranged between the tongue and the tab, to increase the stiffness of said tab relative to said tongue.

Toujours selon l'invention, la déformabilité de la matière de la capsule est telle que son enlèvement de la bouche de la bouteille par simple déplacement axial est pratiquement impossible sans détérioration visible de ladite capsule.Still according to the invention, the deformability of the capsule material is such that its removal from the mouth of the bottle by simple axial displacement is practically impossible without visible deterioration of said capsule.

Selon une autre disposition de l'invention, l'enlèvement de la capsule par rotation est rendue également impossible sans détérioration visible au moyen d'une patte qui s'étend au-delà de la jupe et dans un plan tangentiel à cette dernière; ladite patte constitue le prolongement d'une deuxième languette d'arrachement diamétralement opposée à la première languette munie de l'anneau de préhension.According to another arrangement of the invention, the removal of the capsule by rotation is also made impossible without visible deterioration by means of a tab which extends beyond the skirt and in a plane tangential to the latter; said tab constitutes the extension of a second tearing tab diametrically opposite to the first tab provided with the grip ring.

Dans la présente invention le saillant central présente une cavité axiale ouverte sur l'intérieur de l'orifice; cette cavité s'étend sur toute la longueur du saillant et la paroi cylindrique de ce dernier est telle que, lorsque la cavité devient soumise à la pression interne de la bouteille, il en résulte une expansion radiale de ladite paroi cylindrique suffisante pour entraîner une augmentation correspondante de l'étanchéité.In the present invention, the central projection has an axial cavity open on the inside of the orifice; this cavity extends over the entire length of the projection and the cylindrical wall of the latter is such that, when the cavity becomes subjected to the internal pressure of the bottle, this results in a radial expansion of said cylindrical wall sufficient to cause an increase corresponding sealing.

L'invention sera mieux comprise à l'aide de la description suivante et des dessins annexés donnés à titre indicatif et dans lesquels:

  • - la figure 1 est une coupe de la capsule selon l'invention,
  • - les figures 2 et 3 présentent, en coupe, une bouche munie d'une capsule selon deux types d'orifice,
  • - la figure 4 est une vue de côté d'une capsule positionnée sur une bouche de bouteille de gaz, montrant, par moitié les deux côtés de la capsule.
The invention will be better understood with the aid of the following description and the appended drawings given for information and in which:
  • FIG. 1 is a section of the capsule according to the invention,
  • FIGS. 2 and 3 show, in section, a mouth provided with a capsule according to two types of orifice,
  • - Figure 4 is a side view of a capsule positioned on a gas bottle mouth, showing, by half the two sides of the capsule.

La capsule représentée figure 1, est tout d'abord constituée d'une jupe 1 cylindrique et d'un fond 2 bordant la jupe 1. Sur la jupe 1, on trouve deux languettes 3 diamétralement opposées qui se prolongent d'un côté par un anneau de préhension 4 et, de l'autre côté , par une patte 5 détaillée plus loin. La paroi interne du fond 2 comporte un saillant 6 qui s'étend axialement sur toute la profondeur de la capsule. Le saillant 6 est constitué d'une semelle 7 circulaire, d'une première partie cylindrique 8 et d'une seconde partie cylindrique 9 de diamètre réduit se terminant en forme de zone sphérique 10. Le saillant 6 comporte une cavité 11 axiale également, qui s'étend depuis le fond 2. Cette cavité 11 est ouverte du côté opposé au fond 2 et elle a une forme ogivale obtenue directement de moulage.The capsule shown in FIG. 1 is first of all made up of a cylindrical skirt 1 and a bottom 2 bordering the skirt 1. On the skirt 1, there are two diametrically opposed tongues 3 which are extended on one side by a grip ring 4 and, on the other side, by a tab 5 detailed below. The internal wall of the bottom 2 has a projection 6 which extends axially over the entire depth of the capsule. The projection 6 consists of a circular sole 7, a first cylindrical part 8 and a second cylindrical part 9 of reduced diameter ending in the form of a spherical zone 10. The projection 6 also has an axial cavity 11, which extends from the bottom 2. This cavity 11 is open on the side opposite the bottom 2 and it has an ogival shape obtained directly from molding.

La capsule est réalisée de façon monobloc, en un matériau plastique déformable élastiquement pour, d'une part, pouvoir être mise en place par un emmanchement forcé des parties saillantes de la jupe 1 sur le filetage mâle de la bouche 12, jusqu'à la mise en butée de la face interne annulaire du fond 2 sur la bordure de ladite bouche 12 et, d'autre part, permettre une déformation radiale, par expansion, du saillant 6 lorsqu'il règne, dans la cavité 11, une pression de gaz comme dans la bouteille.The capsule is made in one piece, in an elastically deformable plastic material so that, on the one hand, it can be put in place by forced fitting of the protruding parts of the skirt 1 onto the male thread of the mouth 12, up to the abutment of the annular internal face of the bottom 2 on the edge of said mouth 12 and, on the other hand, allow a radial deformation, by expansion, of the projection 6 when there prevails, in the cavity 11, a gas pressure as in the bottle.

La figure 2 présente, en coupe, une capsule selon l'invention disposée par emmanchement forcé sur la bouche 12 d'un corps de robinet 13 d'une bouteille de gaz, non représentée, la partie interne du fond 2 étant en butée sur ladite bouche. L'orifice 14a de la bouche 12 est du type cylindrique et renferme un joint d'étanchéité 15 dont l'épaisseur est sensiblement supérieure à l'épaisseur de la capsule au niveau de la jupe 1. Ce joint 15 comporte un alésage cylindrique 16 dans lequel pénètre partiellement au moment de l'emmanchement de la capsule sur la bouche 12, la première partie cylindrique 8 du saillant 6, faisant ainsi étanchéité.Figure 2 shows, in section, a capsule according to the invention arranged by forced fitting on the mouth 12 of a valve body 13 of a gas bottle, not shown, the internal part of the bottom 2 being in abutment on said mouth. The orifice 14a of the mouth 12 is of the cylindrical type and contains a seal 15 the thickness of which is substantially greater than the thickness of the capsule at the level of the skirt 1. This seal 15 has a cylindrical bore 16 in which partially penetrates at the time of the fitting of the capsule on the mouth 12, the first cylindrical part 8 of the projection 6, thus making a seal.

Le joint 15 est légèrement comprimé dans l'orifice 14 de la bouche 12, par la semelle 7 dont le diamètre est légèrement inférieur à celui de l'orifice 14 et l'épaisseur sensiblement égale à la moitié de celle du fond 2. Dans l'exemple de réalisation, l'arête de la partie cylindrique 8 se situe près de la moitié de la longueur de l'alésage cylindrique 16 du joint d'étanchéité 15.The seal 15 is slightly compressed in the orifice 14 of the mouth 12, by the sole 7 whose diameter is slightly less than that of the orifice 14 and the thickness substantially equal to half that of the bottom 2. In the In an exemplary embodiment, the edge of the cylindrical part 8 is located almost half the length of the cylindrical bore 16 of the seal 15.

La figure 3 présente une capsule mise en place sur une bouche 12 dont l'orifice 14b renferme un dispositif 17 de régulation à bille. Ce dispositif 17 comporte une paroi 18, qui est perpendiculaire à l'axe de l'orifice 14b et qui est munie d'un alésage 19 axial pour le passage du gaz d'une part, et l'arrêt de la bille 20 de régulation, d'autre part.FIG. 3 presents a capsule placed on a mouth 12, the orifice 14b of which contains a device 17 for regulating a ball. This device 17 comprises a wall 18 which is perpendicular to the axis of the orifice 14b and which is provided with an axial bore 19 for the passage of gas on the one hand, and the stop of the regulating ball 20 , on the other hand.

La capsule est emmanchée à force sur la bouche 12 et la partie interne du fond 2 est positionnée en butée sur ladite bouche. La partie extrême du saillant 6, c'est-à-dire la zone sphérique 10 et la partie cylindrique 9, pénètrent dans l'alésage 19 de la paroi 18. La bille 20 se positionne, par gravité, dans le dispositif 17. La cavité 10 du saillant est directement ouverte sur le dispositif régulateur 17 et l'amont de la bouche 12. En cas d'ouverture accidentelle du robinet de fermeture de la bouteille, la pression qui règne dans la cavité 11 provoque une déformation radiale et une expansion de la paroi de ladite cavité 11 au niveau de la partie cylindrique 9 et de la zone sphérique 11 en contact avec l'alésage 19. Cette expansion élastique se retrouve, moins accentuée, figure 2, au niveau de la partie cylindrique 8 en contact avec l'alésage cylindrique 16 du joint d'étanchéité 15.The capsule is force fitted on the mouth 12 and the internal part of the bottom 2 is positioned in abutment on said mouth. The extreme part of the protrusion 6, that is to say the spherical zone 10 and the cylindrical part 9, penetrate into the bore 19 of the wall 18. The ball 20 is positioned, by gravity, in the device 17. The cavity 10 of the projection is directly open on the regulating device 17 and upstream of the mouth 12. In the event of accidental opening of the valve for closing the bottle, the pressure which prevails in the cavity 11 causes a radial deformation and an expansion of the wall of said cavity 11 at the level of the cylindrical part 9 and of the spherical zone 11 in contact with the bore 19. This elastic expansion is found, less accentuated, FIG. 2, at the level of the cylindrical part 8 in contact with the cylindrical bore 16 of the seal 15.

La figure 4 montre la forme extérieure d'une capsule emmanchée sur la bouche 12 d'un corps 13 de robinet. L'emmanchement de la capsule est effectué selon une orientation précise pour positionner l'anneau d'arrachement 4 et la patte 5 latéralement, contre le corps 13 du robinet. La patte 5 prolonge la languette 3 qui est disposée entre deux amincissements 21 pratiqués selon des génératrices sur la jupe 1. La patte 5 est située dans un plan parallèle mais légèrement décalé vers l'extérieur par rapport à la languette 3, figure 1. Le décalage est le siège d'un contrefort 22 raccordé tangentiellement à la partie supérieure de la languette 3 et à la patte 5. Ce contrefort 22 accentue la rigidité de la patte 5 par rapport à la languette 3 pour faciliter le déchirement des amincissements 21 de part et d'autre de ladite languette 3. Cette raideur de la patte 5 par rapport à la languette 3 interdit toute rotation de la capsule sur la bouche 12 filetée, sauf à provoquer une déchirure des amincissements 21.Figure 4 shows the outer shape of a capsule fitted on the mouth 12 of a valve body 13. The fitting of the capsule is carried out in a precise orientation to position the tearing ring 4 and the tab 5 laterally, against the body 13 of the valve. The tab 5 extends the tongue 3 which is disposed between two thinning operations 21 performed on generators on the skirt 1. The tab 5 is located in a parallel plane but slightly offset towards the outside with respect to the tongue 3, FIG. 1. The offset is the seat of a buttress 22 tangentially connected to the upper part of the tongue 3 and to the tab 5. This buttress 22 accentuates the rigidity of the tab 5 relative to the tongue 3 to facilitate the tearing of the thinning 21 on the part and on the other side of said tongue 3. This stiffness of the tab 5 relative to the tongue 3 prevents any rotation of the capsule on the threaded mouth 12, except to cause tearing of the thinning 21.

De la même façon, l'anneau d'arrachement 4 prolonge la languette 3 disposée entre deux amincissements 21 pratiqués selon des génératrices de la jupe 1. L'anneau 4 est situé dans un plan légèrement incliné par rapport à la languette, selon un angle de l'ordre de 30°, fig. 1. Un contrefort 22 est également disposé tangentiellement entre la languette 3 et l'anneau 4 pour éviter un arrachement dudit anneau 4.In the same way, the tear-off ring 4 extends the tongue 3 disposed between two thinning operations 21 carried out along generatrices of the skirt 1. The ring 4 is located in a plane slightly inclined relative to the tongue, at an angle of the order of 30 °, fig. 1. A buttress 22 is also arranged tangentially between the tongue 3 and the ring 4 to avoid tearing of said ring 4.

Claims (4)

1. Tamper-proof sealing cap of the one-piece type, intended for covering the mouth of a compressed-gas bottle and comprising:
- a peripheral skirt (1) having projections directed inwards and intended for interacting with the male thread of the mouth (12),
- a bottom (2) bordering the skirt (1), and
- a central projection (6) which extends from the bottom (2) and enters the interior of the orifice (14) of the mouth and which has a cylindrical part capable of penetrating forcibly into a bore located inside the orifice (14), the projection (6) having a sealing stage consisting of a bolster (7) arranged on the inner wall of the bottom (2) an extended by a first cylindrical part (8), characterized in that the central projection (6) comprises a second sealing stage consisting of a second cylindrical part (9) terminating in a spherical zone (10) and, with a smaller diameter, extending the first cylindrical part, these two sealing stages being capable of interacting respectively with a mouth (12), the orifice (14) of which is provided either with a gasket (15) or with a pressure-regulating device (17).
2. Tamper-proof sealing cap according to Claim 1, characterized in that a portion of the skirt (1) forms, between two thinnings (21) along generatrices, a tongue (3) which is extended beyond the skirt (1) by a pull-off ring (4) arranged in a plane substantially inclined relative to the said tongue (3), the said ring (4) making it possible to release the cap from the mouth (12).
3. Tamper-proof sealing cap according to Claim 2, characterized in that the tongue (3) is extended beyond the skirt (1) by a tab (5) arranged in a plane parallel to the tongue (3) and offset slightly outwards relative to the latter.
4. Tamper-proof sealing cap according to one of Claims 2 or 3, characterized n that a buttress (22) is arranged between the tongue (23) and the tab (5), in order to increase the rigidity of the said tab (5) in relation to the said tongue (3).
EP86400447A 1985-03-05 1986-03-04 Pilot capsule and closure for the mouth piece of a gas bottle Expired EP0194923B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86400447T ATE45024T1 (en) 1985-03-05 1986-03-04 CONTROL CAPSULE AND CAP FOR THE MOUTHPIECE OF A CYLINDER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8503230A FR2578623B1 (en) 1985-03-05 1985-03-05 BLIND AND SHUTTERING CAPSULE FOR BOTTLE GAS MOUTH
FR8503230 1985-03-05

Publications (2)

Publication Number Publication Date
EP0194923A1 EP0194923A1 (en) 1986-09-17
EP0194923B1 true EP0194923B1 (en) 1989-07-26

Family

ID=9316881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400447A Expired EP0194923B1 (en) 1985-03-05 1986-03-04 Pilot capsule and closure for the mouth piece of a gas bottle

Country Status (5)

Country Link
EP (1) EP0194923B1 (en)
AT (1) ATE45024T1 (en)
DE (1) DE3664679D1 (en)
FR (1) FR2578623B1 (en)
PT (1) PT82138B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8812872U1 (en) * 1988-10-13 1988-11-24 Messer Griesheim Gmbh, 6000 Frankfurt Tamper-evident closure for gas cylinder valves
FR2789366B1 (en) * 1999-02-04 2001-03-09 Gaz De Petrole SEALING CAPSULE
MA47394B1 (en) * 2019-11-21 2021-10-29 Oulahiane Amine Tamper-evident safety cap for 12 and 34 kg gas cylinders

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB751744A (en) * 1953-10-13 1956-07-04 M & E Projects Ltd Improvements in bottle seals or closures
FR2134252B1 (en) * 1971-04-29 1975-02-21 Utilisation Ration Gaz
FR2163324B1 (en) * 1971-12-13 1975-07-18 Alca Sa
DE2204979A1 (en) * 1972-02-03 1973-08-09 Werner Nolte SCREW CAP CLOSURE
CH553696A (en) * 1973-05-09 1974-09-13 Obrist Albert & Co PLASTIC CAP FOR A CONTAINER, IN PARTICULAR A BOTTLE.
CH591372A5 (en) * 1975-05-26 1977-09-15 Wiedmer Walter Plastikform Elastic material bottle sealing cap - has notches in edge engaging under bead either side of opening lug
FR2391402A1 (en) * 1977-05-17 1978-12-15 Alca Sa DEVICE FOR A CAP RESISTANT TO HIGH GAS PRESSURE
FR2442194B1 (en) * 1978-11-24 1985-07-19 Elf Antargaz METHOD FOR ENSURING THE SEALING OF A SPEAKER ORIFICE AND METAL CAPSULE FOR SEALING SUCH AN ORIFICE

Also Published As

Publication number Publication date
DE3664679D1 (en) 1989-08-31
EP0194923A1 (en) 1986-09-17
FR2578623A1 (en) 1986-09-12
FR2578623B1 (en) 1988-04-22
ATE45024T1 (en) 1989-08-15
PT82138A (en) 1986-09-16
PT82138B (en) 1993-05-31

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