EP0552091A1 - Sealing ring for use in sealing preserving jars - Google Patents

Sealing ring for use in sealing preserving jars Download PDF

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Publication number
EP0552091A1
EP0552091A1 EP93400058A EP93400058A EP0552091A1 EP 0552091 A1 EP0552091 A1 EP 0552091A1 EP 93400058 A EP93400058 A EP 93400058A EP 93400058 A EP93400058 A EP 93400058A EP 0552091 A1 EP0552091 A1 EP 0552091A1
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EP
European Patent Office
Prior art keywords
washer
weakening zone
zone
weakening
seal according
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
EP93400058A
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German (de)
French (fr)
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EP0552091B1 (en
Inventor
Didier Levassort
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Hutchinson SA
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Hutchinson SA
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Publication date
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Publication of EP0552091A1 publication Critical patent/EP0552091A1/en
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Publication of EP0552091B1 publication Critical patent/EP0552091B1/en
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    • 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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/02—Collars or rings

Definitions

  • the present invention relates to improvements made to the seals which seal between the body and the cover of a canning jar, in particular made of glass, the seal being formed by a rubber washer comprising at least one external lateral projection for gripping. , and a first weakening zone of a first type, formed by a resistance line different from that of the rubber and which extends from the junction between the lateral projection and the washer, at the internal periphery of the washer or close to it.
  • a vacuum is created inside it.
  • the maintenance of the cover on the body of the jar is ensured by the pressure difference between the inside of the jar and the outside which is at atmospheric pressure, and by a metal frame designed so as to have sufficient elasticity so as not to oppose the evacuation of the air contained in the jar during the sterilization operation.
  • an air inlet is generally caused to balance the pressures inside and outside the jar. This air intake is obtained by strongly pulling on the gripping member of the washer which projects outside the jar. Then, simply unhook the metal frame to complete this operation of opening the cover.
  • the washer is provided with at least one lateral projection for gripping on the outside associated with a weakening zone formed by a resistance line different from that of the rubber and which is formed on the washer between the junction of the lateral projection with the washer, and the internal periphery of the latter.
  • the zone in which the different resistance line is formed is made of a rubber having a lower breaking strength than that of the rubber which constitutes the assembly of the washer.
  • the object of the invention is to overcome this drawback by providing an improvement to this type of seal so that the tear in the washer follows as closely as possible the line defined by the weakening zone.
  • the invention provides a seal of the aforementioned type, which is characterized in that the first weakening zone of a first type, formed by a resistance line different from that of the rubber, is associated to a second weakening zone of a second type, formed of at least one notch or cut located near the first weakening zone.
  • the second weakening zone is constituted by a cut such as a hole located near the internal edge of the puck and in line with the line defined by the first weakening zone.
  • the second weakening zone is formed by at least two holes situated respectively on either side of the first weakening zone.
  • the second weakening zone is constituted by one or more notches formed on the internal edge of the washer and which can be in extension or located respectively on either side of the first weakened area.
  • the holes and / or cutouts made in the washer to form the second weakening zone can be filled with any filling material.
  • the seals illustrated in FIGS. 1 to 4 are constituted by a rubber washer placed between the body and the cover of a jar (not shown) on which there are provided suitable surfaces for sealing the jar during closing the cover, with an articulated metal frame (not shown) mounted between the body and the cover of the jar.
  • the washer 1 comprises two external lateral gripping projections 2 adjacent to each other, a first weakening zone 3 of a first type associated with a zone of attenuation 5 of a second type.
  • the first weakening zone 3 is constituted by a rectilinear radial zone which extends from the junction point 2a between the two lateral projections 2 towards the internal periphery of the washer 1, without reaching the latter.
  • This weakening zone 3 is produced for example, during the operation of shaping the washer 1, by a simultaneous extrusion of a main mass of rubber which constitutes the bulk of the washer 1, and of a small quantity of rubber or other material, for example, having a breaking strength different from that of the rubber constituting the washer 1.
  • the second weakening zone 5 is constituted by a cutout formed by a hole through the washer 1. This hole 5 is centered overall on the diametrical axis AA passing through the junction point 2a of the two lateral projections 2. In this example, hole 5 is located in the vicinity of the inner periphery of the washer 1 and in the extension of the first weakening zone 3.
  • FIG. 2 A variant of this embodiment is represented in FIG. 2, where the second weakening zone is constituted by at least two holes 5 situated respectively on either side of the first weakening zone 3, and in the vicinity of the inner periphery of the washer 1.
  • the second weakening zone 5 is formed by two notches 6 formed at the internal periphery of the washer 1, and situated respectively on either side of the first attenuation 3 and in the vicinity thereof.
  • the second weakening zone is constituted by at least one hole 5 situated in the vicinity of the internal periphery of the washer 1, or as a variant by at least one notch 6 situated at said periphery.
  • the user grasps the two external lateral gripping projections 2 and exerts two tensile forces in two opposite directions (represented by the arrows F1 and F2) , directions substantially parallel to the tangent of the washer 1 passing through the junction point 2a between the two lateral projections 2.
  • the washer 1 then tears along the axis AA, tear which begins without problem because it corresponds to a party outside of the washer not tightened between the body and the jar cover. Then, the tear will continue overall along the first weakening zone 3, the presence of the second weakening zone formed by the holes 5 in FIGS. 1 and 2 and by the two notches 6 in FIG. 3, allowing the tear to substantially follow the weakening zone 3 along the axis AA and without deviating from it or to join the second weakening zone 5 located towards the inside of the washer 1.
  • the user grasps the lateral projection 2 at his elbow 2b, and exerts a tensile force in the direction F3 which is substantially perpendicular to the first weakening zone 3.
  • F3 tensile force
  • the first weakening zone can be given a flared shape in the direction of the internal periphery of the washer 1, as schematically illustrated by dotted lines in FIG. 2, and the second weakening zone 5 in the embodiment of Figure 4 may be radial.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Pens And Brushes (AREA)
  • Package Closures (AREA)
  • Gasket Seals (AREA)

Abstract

The seal for sealing the body and the lid of a jar of conserve, in particular one made of glass, is formed by a rubber washer (1) comprising two outer lateral projections (2) for gripping, a first weakened zone (3) of a first type formed by a line of lesser strength (3), and a weakened zone of a second type formed by at least one cutout (5) and/or a notch (6), situated near the first weakened zone (3). <IMAGE>

Description

La présente Invention concerne des perfectionnements apportés aux joints qui assurent l'étanchéité entre le corps et le couvercle d'un bocal de conserve, notamment en verre, le joint étant formé d'une rondelle en caoutchouc comportant au moins une projection latérale extérieure de préhension, et une première zone d'affaiblissement d'un premier type, formée d'une ligne de résistance différente de celle du caoutchouc et qui s'étend de la jonction entre la projection latérale et la rondelle, à la périphérie interne de la rondelle ou à proximité de celle-ci.The present invention relates to improvements made to the seals which seal between the body and the cover of a canning jar, in particular made of glass, the seal being formed by a rubber washer comprising at least one external lateral projection for gripping. , and a first weakening zone of a first type, formed by a resistance line different from that of the rubber and which extends from the junction between the lateral projection and the washer, at the internal periphery of the washer or close to it.

D'une manière générale, pendant l'opération de stérilisation des aliments contenus dans un bocal, il se crée une dépression à l'intérieur de celui-ci. Le maintien du couvercle sur le corps du bocal est assuré par la différence de pression entre l'intérieur du bocal et l'extérieur qui se trouve à la pression atmosphérique, et par une armature métallique conçue de façon à avoir une élasticité suffisante pour ne pas s'opposer à l'évacuation de l'air contenu dans le bocal pendant l'opération de stérilisation.In general, during the sterilization operation of the food contained in a jar, a vacuum is created inside it. The maintenance of the cover on the body of the jar is ensured by the pressure difference between the inside of the jar and the outside which is at atmospheric pressure, and by a metal frame designed so as to have sufficient elasticity so as not to oppose the evacuation of the air contained in the jar during the sterilization operation.

Pour ouvrir le bocal, on provoque généralement une entrée d'air pour équilibrer les pressions à l'intérieur et l'extérieur du bocal. Cette entrée d'air est obtenue en tirant fortement sur l'organe de préhension de la rondelle qui fait saillie à l'extérieur du bocal. Ensuite, il suffit de décrocher l'armature métallique pour achever cette opération d'ouverture du couvercle.To open the jar, an air inlet is generally caused to balance the pressures inside and outside the jar. This air intake is obtained by strongly pulling on the gripping member of the washer which projects outside the jar. Then, simply unhook the metal frame to complete this operation of opening the cover.

Pour faciliter l'ouverture du couvercle, de nombreux agencements de rondelles ont été développés afin de réduire l'effort de traction relativement important qu'il est nécessaire d'exercer sur l'organe de préhension de la rondelle.To facilitate the opening of the cover, numerous arrangements of washers have been developed in order to reduce the relatively large tensile force which it is necessary to exert on the gripping member of the washer.

Dans le document FR-2 585 003, au nom de la Demanderesse, la rondelle est pourvue d'au moins une projection latérale de préhension extérieure associée à une zone d'affaiblissement formée par une ligne de résistance différente de celle du caoutchouc et qui est ménagée sur la rondelle entre la jonction de la projection latérale avec la rondelle, et la périphérie interne de cette dernière. Selon un mode de réalisation décrit, la zone dans laquelle est ménagée la ligne de résistance différente est réalisée en un caoutchouc présentant une résistance à la rupture inférieure à celle du caoutchouc qui constitue l'ensemble de la rondelle. Ainsi, en tirant fortement sur la zone de préhension de la rondelle, on doit provoquer une déchirure de celle-ci suivant la ligne définie par la zone d'affaiblissement.In document FR-2 585 003, in the name of the Applicant, the washer is provided with at least one lateral projection for gripping on the outside associated with a weakening zone formed by a resistance line different from that of the rubber and which is formed on the washer between the junction of the lateral projection with the washer, and the internal periphery of the latter. According to an embodiment described, the zone in which the different resistance line is formed is made of a rubber having a lower breaking strength than that of the rubber which constitutes the assembly of the washer. Thus, by pulling strongly on the grip area of the washer, one must cause a tear thereof along the line defined by the weakening area.

Concrètement, il s'avère que la déchirure ne s'effectue pas systématiquement le long de la zone d'affaiblissement, du fait de la pression qui est exercée sur la rondelle dans sa partie intérieure en contact avec le corps et le couvercle du bocal.Concretely, it turns out that the tear is not systematically carried out along the weakened zone, due to the pressure which is exerted on the washer in its internal part in contact with the body and the cover of the jar.

Le but de l'Invention est de pallier cet inconvénient en apportant un perfectionnement à ce type de joints d'étanchéité pour que la déchirure de la rondelle suive au plus près la ligne définie par la zone d'affaiblissement.The object of the invention is to overcome this drawback by providing an improvement to this type of seal so that the tear in the washer follows as closely as possible the line defined by the weakening zone.

A cet effet, l'Invention propose un joint d'étanchéité du type précité, qui est caractérisé en ce que la première zone d'affaiblissement d'un premier type, formée d'une ligne de résistance différente de celle du caoutchouc, est associée à une seconde zone d'affaiblissement d'un second type, formée d'au moins une échancrure ou découpe située à proximité de la première zone d'affaiblissement.To this end, the invention provides a seal of the aforementioned type, which is characterized in that the first weakening zone of a first type, formed by a resistance line different from that of the rubber, is associated to a second weakening zone of a second type, formed of at least one notch or cut located near the first weakening zone.

Selon un mode de réalisation de l'Invention, la seconde zone d'affaiblissement est constituée par une découpe telle qu'un trou situé à proximité du bord interne de la rondelle et dans le prolongement de la ligne définie par la première zone d'affaiblissement.According to one embodiment of the invention, the second weakening zone is constituted by a cut such as a hole located near the internal edge of the puck and in line with the line defined by the first weakening zone.

En variante de ce mode de réalisation, la seconde zone d'affaiblissement est formée par au moins deux trous situés respectivement de part et d'autre de la première zone d'affaiblissement.As a variant of this embodiment, the second weakening zone is formed by at least two holes situated respectively on either side of the first weakening zone.

Selon un autre mode de réalisation de l'Invention, la seconde zone d'affaiblissement est constituée par une ou plusieurs échancrures formées sur le bord interne de la rondelle et qui peuvent être en prolongement ou situées respectivement de part et d'autre de la première zone d'affaiblissement.According to another embodiment of the invention, the second weakening zone is constituted by one or more notches formed on the internal edge of the washer and which can be in extension or located respectively on either side of the first weakened area.

Selon une autre disposition de l'Invention, les trous et/ou découpes réalisées dans la rondelle pour former la seconde zone d'affaiblissement, peuvent être comblés par un matériau de remplissage quelconque.According to another arrangement of the invention, the holes and / or cutouts made in the washer to form the second weakening zone, can be filled with any filling material.

Ainsi, avec un tel joint d'étanchéité, une fois la déchirure amorcée à la jonction entre la projection latérale extérieure et la rondelle, cette déchirure se poursuivra le long de la première zone d'affaiblissement, en rejoignant éventuellement la deuxième zone d'affaiblissement, afin de faciliter l'ouverture du couvercle.Thus, with such a seal, once the tear has started at the junction between the external lateral projection and the washer, this tear will continue along the first weakening zone, possibly joining the second weakening zone. , to facilitate the opening of the cover.

D'autres avantages, caractéristiques et détails de l'Invention ressortiront de la description explicative qui va suivre faite en référence aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :

  • la figure 1 est une vue en plan d'un joint d'étanchéité selon un premier mode de réalisation de l'Invention,
  • la figure 2 est une vue en plan d'une variante de réalisation du joint d'étanchéité représenté à la figure 1,
  • la figure 3 est une vue en plan d'un joint d'étanchéité selon un second mode de réalisation de l'Invention,
  • et la figure 4 est une vue en plan d'un joint d'étanchéité selon un troisième mode de réalisation de l'Invention.
Other advantages, characteristics and details of the invention will emerge from the explanatory description which follows, given with reference to the appended drawings given solely by way of example and in which:
  • FIG. 1 is a plan view of a seal according to a first embodiment of the invention,
  • FIG. 2 is a plan view of an alternative embodiment of the seal shown in FIG. 1,
  • FIG. 3 is a plan view of a seal according to a second embodiment of the Invention,
  • and Figure 4 is a plan view of a seal according to a third embodiment of the invention.

Les joints d'étanchéité illustrés aux figures 1 à 4 sont constitués par une rondelle en caoutchouc placée entre le corps et le couvercle d'un bocal (non représenté) sur lesquels il est prévu des portées appropriées pour assurer l'étanchéité du bocal lors de la fermeture du couvercle, avec une armature métallique articulée (non représentée) montée entre le corps et le couvercle du bocal.The seals illustrated in FIGS. 1 to 4 are constituted by a rubber washer placed between the body and the cover of a jar (not shown) on which there are provided suitable surfaces for sealing the jar during closing the cover, with an articulated metal frame (not shown) mounted between the body and the cover of the jar.

Selon le premier mode de réalisation représenté à la figure 1, la rondelle 1 comporte deux projections latérales extérieures de préhension 2 voisines l'une de l'autre, une première zone d'affaiblissement 3 d'un premier type associée à une zone d'affaiblissement 5 d'un second type.According to the first embodiment shown in Figure 1, the washer 1 comprises two external lateral gripping projections 2 adjacent to each other, a first weakening zone 3 of a first type associated with a zone of attenuation 5 of a second type.

La première zone d'affaiblissement 3 est constituée par une zone radiale rectiligne qui s'étend du point de jonction 2a entre les deux projections latérales 2 vers la périphérie interne de la rondelle 1, sans atteindre celle-ci. Cette zone d'affaiblissement 3 est produite par exemple, lors de l'opération de façonnage de la rondelle 1, par une extrusion simultanée d'une masse principale de caoutchouc qui constitue l'essentiel de la rondelle 1, et d'une faible quantité de caoutchouc ou autre matériau, par exemple, présentant une résistance à la rupture différente de celle du caoutchouc constituant la rondelle 1.The first weakening zone 3 is constituted by a rectilinear radial zone which extends from the junction point 2a between the two lateral projections 2 towards the internal periphery of the washer 1, without reaching the latter. This weakening zone 3 is produced for example, during the operation of shaping the washer 1, by a simultaneous extrusion of a main mass of rubber which constitutes the bulk of the washer 1, and of a small quantity of rubber or other material, for example, having a breaking strength different from that of the rubber constituting the washer 1.

La seconde zone d'affaiblissement 5 est constituée par une découpe formée par un trou au travers de la rondelle 1. Ce trou 5 est centré globalement sur l'axe diamétral A-A passant par le point de jonction 2a des deux projections latérales 2. Dans cet exemple, le trou 5 est situé au voisinage de la périphérie interne de la rondelle 1 et dans le prolongement de la première zone d'affaiblissement 3.The second weakening zone 5 is constituted by a cutout formed by a hole through the washer 1. This hole 5 is centered overall on the diametrical axis AA passing through the junction point 2a of the two lateral projections 2. In this example, hole 5 is located in the vicinity of the inner periphery of the washer 1 and in the extension of the first weakening zone 3.

Une variante de ce mode de réalisation est représentée à la figure 2, où la seconde zone d'affaiblissement est constituée par au moins deux trous 5 situés respectivement de part et d'autre de la première zone d'affaiblissement 3, et au voisinage de la périphérie interne de la rondelle 1.A variant of this embodiment is represented in FIG. 2, where the second weakening zone is constituted by at least two holes 5 situated respectively on either side of the first weakening zone 3, and in the vicinity of the inner periphery of the washer 1.

Selon le second mode de réalisation représenté à la figure 3, la seconde zone d'affaiblissement 5 est formée par deux échancrures 6 formées à la périphérie interne de la rondelle 1, et situées respectivement de part et d'autre de la première zone d'affaiblissement 3 et au voisinage de celle-ci.According to the second embodiment shown in FIG. 3, the second weakening zone 5 is formed by two notches 6 formed at the internal periphery of the washer 1, and situated respectively on either side of the first attenuation 3 and in the vicinity thereof.

Selon le troisième mode de réalisation illustré à la figure 4, il n'est prévu qu'une seule projection latérale de préhension 2 qui se prolonge par un coude 2b. Au point de jonction 2a de la projection latérale 2a sur la rondelle 1, débute la première zone d'affaiblissement 3 qui aboutit à proximité de la périphérie interne de la rondelle 1, mais dont l'orientation est inclinée dans cet exemple.According to the third embodiment illustrated in Figure 4, there is only provided a single lateral gripping projection 2 which is extended by a bend 2b. At the junction point 2a of the lateral projection 2a on the washer 1, begins the first weakening zone 3 which ends near the internal periphery of the washer 1, but whose orientation is inclined in this example.

La seconde zone d'affaiblissement est constituée par au moins un trou 5 situé au voisinage de la périphérie interne de la rondelle 1, ou en variante par au moins une échancrure 6 située à ladite périphérie.The second weakening zone is constituted by at least one hole 5 situated in the vicinity of the internal periphery of the washer 1, or as a variant by at least one notch 6 situated at said periphery.

Lors de l'ouverture du bocal et en considérant les rondelles illustrées aux figures 1 à 3, l'usager saisit les deux projections latérales extérieures de préhension 2 et exerce deux efforts de traction suivant deux directions opposées (représentées par les flèches F1 et F2), directions sensiblement parallèles à la tangente de la rondelle 1 passant par le point de jonction 2a entre les deux projections latérales 2. La rondelle 1 se déchire alors suivant l'axe A-A, déchirure qui s'amorce sans problème du fait qu'elle correspond à une partie extérieure de la rondelle non serrée entre le corps et le couvercle du bocal. Ensuite, la déchirure va se poursuivre globalement le long de la première zone d'affaiblissement 3, la présence de la seconde zone d'affaiblissement formée par les trous 5 sur les figures 1 et 2 et par les deux échancrures 6 sur la figure 3, permettant à la déchirure de suivre sensiblement la zone d'affaiblissement 3 suivant l'axe A-A et sans s'écarter de celui-ci ou de rejoindre la deuxième zone d'affaiblissement 5 située vers l'intérieur de la rondelle 1.When opening the jar and considering the washers illustrated in Figures 1 to 3, the user grasps the two external lateral gripping projections 2 and exerts two tensile forces in two opposite directions (represented by the arrows F1 and F2) , directions substantially parallel to the tangent of the washer 1 passing through the junction point 2a between the two lateral projections 2. The washer 1 then tears along the axis AA, tear which begins without problem because it corresponds to a party outside of the washer not tightened between the body and the jar cover. Then, the tear will continue overall along the first weakening zone 3, the presence of the second weakening zone formed by the holes 5 in FIGS. 1 and 2 and by the two notches 6 in FIG. 3, allowing the tear to substantially follow the weakening zone 3 along the axis AA and without deviating from it or to join the second weakening zone 5 located towards the inside of the washer 1.

Lors de l'ouverture du bocal, et en considérant le mode de réalisation de la figure 4, l'usager saisit la projection latérale 2 au niveau de son coude 2b, et exerce un effort de traction suivant la direction F3 qui est sensiblement perpendiculaire à la première zone d'affaiblissement 3. Une fois la déchirure amorcée, elle se poursuivra, comme précédemment le long de la première zone d'affaiblissement 3 ou rejoindra la deuxième zone d'affaiblissement 5 située vers l'intérieur de la rondelle 1.When opening the jar, and considering the embodiment of FIG. 4, the user grasps the lateral projection 2 at his elbow 2b, and exerts a tensile force in the direction F3 which is substantially perpendicular to the first weakening zone 3. Once the tear has started, it will continue, as before, along the first weakening zone 3 or join the second weakening zone 5 located towards the inside of the washer 1.

A partir des modes de réalisation illustrés sur les figures 1 à 4, il est possible d'envisager des variantes qui restent dans le cadre de l'Invention.From the embodiments illustrated in FIGS. 1 to 4, it is possible to envisage variants which remain within the scope of the invention.

En particulier, on peut donner à la première zone d'affaiblissement une forme évasée en direction de la périphérie interne de la rondelle 1, comme cela est schématiquement illustré en traits pointillés à la figure 2, et la seconde zone d'affaiblissement 5 dans le mode de réalisation de la figure 4 peut être radiale.In particular, the first weakening zone can be given a flared shape in the direction of the internal periphery of the washer 1, as schematically illustrated by dotted lines in FIG. 2, and the second weakening zone 5 in the embodiment of Figure 4 may be radial.

Claims (8)

Joint d'étanchéité entre le corps et le couvercle d'un bocal de conserve, notamment en verre, le joint étant formé d'une rondelle en caoutchouc comportant au moins une projection latérale de préhension, et une première zone d'affaiblissement d'un premier type formée d'une ligne de résistance différente de celle du caoutchouc et qui s'étend du point de jonction entre la projection latérale et la rondelle, à la périphérie interne de la rondelle ou à proximité de celle-ci, caractérisé en ce que la zone d'affaiblissement (3), d'un premier type, est associée à une seconde zone d'affaiblissement d'un second type formée d'au moins une découpe (5) ou échancrure (6) située à proximité de la première zone d'affaiblissement (3).Seal between the body and the lid of a canning jar, in particular made of glass, the seal being formed of a rubber washer comprising at least one lateral projection for gripping, and a first weakening zone of a first type formed by a resistance line different from that of the rubber and which extends from the junction point between the lateral projection and the washer, at the internal periphery of the washer or near it, characterized in that the weakening zone (3), of a first type, is associated with a second weakening zone of a second type formed by at least one cutout (5) or notch (6) located near the first weakened zone (3). Joint d'étanchéité selon la Revendication 1, caractérisé en ce que la seconde zone d'affaiblissement est formée d'une découpe (5) telle qu'un trou situé au voisinage de la périphérie interne de la rondelle (1) et dans le prolongement de la première zone d'affaiblissement (3).Seal according to Claim 1, characterized in that the second weakening zone is formed by a cutout (5) such as a hole situated in the vicinity of the internal periphery of the washer (1) and in the extension of the first weakening zone (3). Joint d'étanchéité selon la Revendication 1, caractérisé en ce que la seconde zone d'affaiblissement est formée de deux découpes (5) constituées par deux trous situés respectivement de part et d'autre de la première zone d'affaiblissement (3).Seal according to Claim 1, characterized in that the second weakening zone is formed by two cutouts (5) constituted by two holes situated on either side of the first weakening zone (3). Joint d'étanchéité selon la Revendication 1, caractérisé en ce que la seconde zone d'affaiblissement est formée de deux échancrures (6) réalisées à la périphérie interne de la rondelle (1) et situées respectivement de part et d'autre de la première zone d'affaiblissement (3).Seal according to Claim 1, characterized in that the second weakening zone is formed by two notches (6) produced at the internal periphery of the washer (1) and situated respectively on either side of the first weakened zone (3). Joint d'étanchéité selon l'une quelconque des Revendications 1 à 4, caractérisé en ce que la seconde zone d'affaiblissement (5) est comblée par un matériau de remplissage.Seal according to any one of Claims 1 to 4, characterized in that the second weakening zone (5) is filled with a filling material. Joint d'étanchéité selon l'une quelconque des Revendications précédentes, caractérisé en ce que la rondelle (1) comporte une projection latérale de préhension (2) prolongée par un coude (2b), et en ce que la première zone d'affaiblissement (3) est inclinée.Seal according to any one of the preceding claims, characterized in that the washer (1) has a lateral gripping projection (2) extended by an elbow (2b), and in that the first weakening zone ( 3) is tilted. Joint d'étanchéité selon l'une quelconque des Revendications 1 à 5, caractérisé en ce que la rondelle (1) comporte une projection latérale de préhension (2) prolongée par un coude (2b), et en ce que la première zone d'affaiblissement (3) s'étend radialement.Seal according to any one of Claims 1 to 5, characterized in that the washer (1) has a lateral gripping projection (2) extended by an elbow (2b), and in that the first zone of weakening (3) extends radially. Joint d'étanchéité selon l'une quelconque des Revendications précédentes, caractérisé en ce que la zone d'affaiblissement précitée (3) est réalisée par une extrusion simultanée d'une masse principale de caoutchouc qui constitue l'essentiel de la rondelle (1) et d'un autre matériau présentant une résistance à la rupture différente de celle du caoutchouc.Seal according to any one of the preceding claims, characterized in that the aforementioned weakening zone (3) is produced by a simultaneous extrusion of a main mass of rubber which constitutes the main part of the washer (1) and another material having a different breaking strength than that of rubber.
EP93400058A 1992-01-17 1993-01-13 Sealing ring for use in sealing preserving jars Expired - Lifetime EP0552091B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9200450A FR2686318B1 (en) 1992-01-17 1992-01-17 IMPROVEMENTS TO THE SEALS THAT ENSURE THE SEALING BETWEEN THE BODY AND THE LID OF A CAN
FR9200450 1992-01-17

Publications (2)

Publication Number Publication Date
EP0552091A1 true EP0552091A1 (en) 1993-07-21
EP0552091B1 EP0552091B1 (en) 1995-07-19

Family

ID=9425714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400058A Expired - Lifetime EP0552091B1 (en) 1992-01-17 1993-01-13 Sealing ring for use in sealing preserving jars

Country Status (5)

Country Link
EP (1) EP0552091B1 (en)
AT (1) ATE125226T1 (en)
DE (1) DE69300264T2 (en)
ES (1) ES2078803T3 (en)
FR (1) FR2686318B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2091913A (en) * 1935-11-15 1937-08-31 Boston Woven Hose & Rubber Cor Rubber sealing ring
DE810228C (en) * 1949-03-26 1951-08-06 Josef Schuster Closure for canning jars
EP0209454A1 (en) * 1985-07-17 1987-01-21 Hutchinson Sealing gaskets for jars or the like, methods and devices for making them

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2091913A (en) * 1935-11-15 1937-08-31 Boston Woven Hose & Rubber Cor Rubber sealing ring
DE810228C (en) * 1949-03-26 1951-08-06 Josef Schuster Closure for canning jars
EP0209454A1 (en) * 1985-07-17 1987-01-21 Hutchinson Sealing gaskets for jars or the like, methods and devices for making them

Also Published As

Publication number Publication date
EP0552091B1 (en) 1995-07-19
DE69300264D1 (en) 1995-08-24
ATE125226T1 (en) 1995-08-15
FR2686318A1 (en) 1993-07-23
FR2686318B1 (en) 1995-05-05
ES2078803T3 (en) 1995-12-16
DE69300264T2 (en) 1996-04-04

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