EP0934012B1 - Method for treating bivalvular shell-fish to facilitate their opening - Google Patents

Method for treating bivalvular shell-fish to facilitate their opening Download PDF

Info

Publication number
EP0934012B1
EP0934012B1 EP97911294A EP97911294A EP0934012B1 EP 0934012 B1 EP0934012 B1 EP 0934012B1 EP 97911294 A EP97911294 A EP 97911294A EP 97911294 A EP97911294 A EP 97911294A EP 0934012 B1 EP0934012 B1 EP 0934012B1
Authority
EP
European Patent Office
Prior art keywords
bush
shell
opening
fish
core
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 - Lifetime
Application number
EP97911294A
Other languages
German (de)
French (fr)
Other versions
EP0934012A1 (en
Inventor
Yvon Brisard
Gilles Cuccurullo
Christian Cuccurullo
Philippe Musereau
Yves Musereau
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.)
Sarl Ostraquick
Original Assignee
Sarl Ostraquick
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 Sarl Ostraquick filed Critical Sarl Ostraquick
Publication of EP0934012A1 publication Critical patent/EP0934012A1/en
Application granted granted Critical
Publication of EP0934012B1 publication Critical patent/EP0934012B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47GHOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00Table-ware
    • A47G21/06Combined or separable sets of table-service utensils; Oyster knives with openers; Fish servers with means for removing bones
    • A47G21/061Oyster knives with openers; Shellfish openers
    • A47G21/068Devices for piercing the upper shell of oysters; Muscle cutters for use therewith

Definitions

  • the present invention relates to the opening of edible bi-valve shells such as clams, scallops, especially oysters.
  • the tool guide used for sever the adductor muscle through the hole, is random, so that in practice it is often necessary to repeat it several times to achieve to correctly cut the adductor muscle.
  • the "blind" manipulation of the tool often causes damage to the oyster, which produces a result visual unsuitable for the consumer.
  • the LAUGRAUD and BIZIEN process cannot therefore be used only for an oyster preparation before their expedition, which is certainly in progress compared to REB or COURPRON processes, but does not spread the year-round processing of huge quantities oysters that must be on the market during the short holiday season.
  • the oyster thus treated can therefore, without any risk, be put back in the ripening tank, which makes the drilling operation practically independent of the date consumption of oysters.
  • the process according to the invention is therefore characterized in that after piercing the upper shell of the shell near its adductor muscle, we have in the hole an open bearing of a diameter adapted to that of the opening tool.
  • the device for opening bi-valve shells, in particular oysters is characterized in that it consists on the one hand of an open bearing having a core tubular and at least one end shaped as a collar or dome and other part of an opening tool comprising a rod bent at 90 ° and in that the diameter of said rod, at least in its part forming a pivot in position of use, corresponds to the internal diameter of the bearing core.
  • the bearing is provided with means intended to reinforce its resistance to tearing: for example the outer face of the bearing core can be provided with juxtaposed ribs.
  • the core may include, at the opposite of the external collar, an internal collar or a bead intended to come into abutment against the face internal shell.
  • the bearing will be made of deformable food grade material so that it can be put in place by clipping.
  • the soul tubular bearing will be hollow and its internal diameter will be closely matched to the outer diameter of the stem the opening tool.
  • the tool can turn without play in the opening made in the upper shell of the oyster and thus cut the adductor muscle for sure by a simple rotation of a quarter or a half turn.
  • FIG. 1 it can be seen schematically that a oyster has two shells, an upper shell 1 and a lower shell 2, hinged together by a ligament forming the hinge 5.
  • the adductor muscle 3 which is itself surrounded by the body 4 of the oyster, this body being enveloped by a thin membrane with a ciliated outline commonly called coat 6.
  • Figure 3 is illustrated the second step characteristic of the process according to the invention, namely the placement in the hole thus made of a bearing 8 intended to perfectly guide the opening tool 9.
  • this process which uses the capacity natural oyster to restore its own seal, the use of any plugging material or sealing.
  • the bearing will have the general form of a hollow mushroom with a convex head 10, a soul cylindrical 11 and means for strengthening its resistance to tearing, such as the bead 12 ( Figure 5) disposed at the end opposite the head 10 of the core 11, so that enclose both sides of the shell 1.
  • the internal diameter of the core 11 will preferably be in the range of 2 to 2.5 mm.
  • the bearing 8 will be manufactured in flexible food-grade plastic so that its installation can be done easily by simple clipping.
  • the means for reinforce the pullout resistance of the bearing 8 are formed by ribs 13 arranged on the diameter outside of core 11.
  • these ribs may be formed by vertical gadroons themselves striated on their external face by grooves horizontal or oblique which determines the sculptures strengthening the adhesion of the core of the bearing 8 on the wall of the hole 7.
  • the bearing 8 may have in combination a bead 12 and sculptures 13.
  • the tool 9 is presented in the form of a rod 14 bent at 90 ° with a diameter corresponding to the internal diameter of the bearing 8, at least in its pivot part in the use position.
  • a operating member such as a handle 15 or an eyelet.
  • the bearing 8 provides the advantage of staying in place when inserting tool 9, which is not the case in the processes using plugging or sealing in which it it is necessary to remove the wax plug or seal before you can insert the opening tool.
  • the head 10 of the bearing is configured in slope while the handle of the tool 9 has a lower face also sloping 16 likely to come to rest on the slope of the head of the bearing.
  • This can be a simple hollow headless rod of substantially length equal to the thickness of the upper shell; he can have a diabolo shape, have a flat head etc ...
  • the application of the present invention is not limited to oysters, but can concern all bi-valve shells whose opening is done by sectioning an adductor muscle.

Landscapes

  • Processing Of Meat And Fish (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Food-Manufacturing Devices (AREA)

Description

La présente invention concerne l'ouverture des coquillages bi-valves comestibles tels que les clams, les coquilles Saint-Jacques, et notamment les huitres.The present invention relates to the opening of edible bi-valve shells such as clams, scallops, especially oysters.

La difficulté d'ouverture des huítres avant leur consommation est un frein important au développement de leur commercialisation.The difficulty of opening oysters before their consumption is a major obstacle to the development of their marketing.

De nombreux procédés ont été imaginés pour tenter de résoudre ce problème, mais sans obtenir jusqu'à présent de résultats vraiment significatifs qui rendent acceptables le surcoût qu'ils imposent.Many processes have been devised to try to solve this problem but without getting so far really meaningful results that make it acceptable the extra cost they impose.

Déjà en 1958, on a proposé de percer le couvercle de l'huítre à proximité de son muscle adducteur pour introduire par le trou un outil coudé dont la rotation sectionne le muscle et qui sert de tirette pour détacher le couvercle après sectionnement du muscle (brevet français REB 1.194.003 du 28 mars 1958).Already in 1958, it was proposed to pierce the cover of the oyster near its adductor muscle for insert through the hole an angled tool whose rotation cuts the muscle and serves as a zipper to detach the cover after muscle sectioning (French patent REB 1,194.003 of March 28, 1958).

Ce procédé d'ouverture n'était à l'époque décrit que pour l'ouverture extemporanée des huítres, immédiatement avant consommation. Son application industrielle à la préparation des colis d'huítres avant leur expédition depuis les lieux d'élevage n'était pas envisagée, sans doute en raison de la considération qu'une huítre ainsi blessée ne pourrait conserver son eau et par conséquent était intransportable, ni stockable.This opening process was not described at the time. that for the extemporaneous opening of oysters, immediately before consumption. Its application industrial to the preparation of packages of oysters before their shipment from the breeding grounds was not considered, probably due to the consideration that a an oyster thus injured could not conserve its water and by therefore was neither transportable nor storable.

De plus, le guidage de l'outil, utilisé pour sectionner le muscle adducteur à travers le trou, est aléatoire, de sorte que dans la pratique, il est souvent nécessaire de s'y reprendre à plusieurs fois pour parvenir à sectionner correctement le muscle adducteur. En outre, la manipulation "à l'aveuglette" de l'outil provoque souvent l'endommagement de l'huítre, ce qui produit un résultat visuel peu convenable pour le consommateur.In addition, the tool guide, used for sever the adductor muscle through the hole, is random, so that in practice it is often necessary to repeat it several times to achieve to correctly cut the adductor muscle. In addition, the "blind" manipulation of the tool often causes damage to the oyster, which produces a result visual unsuitable for the consumer.

Plus récemment, on a proposé de pratiquer une entaille sur le bord de l'huítre à la jonction des deux coquilles au niveau approximatif du muscle adducteur de manière à faire apparaítre une fente pour l'engagement de la lame du couteau utilisé pour l'ouverture de l'huítre (Brevet français COURPRON n° 2.544.966 du 27 avril 1983). Là encore, il s'agit d'un procédé dont l'utilisation est limitée à l'ouverture immédiatement avant consommation en raison de la perte d'étanchéité qu'il provoque.More recently, it has been proposed to practice a notch on the edge of the oyster at the junction of the two shells at the approximate level of the adductor muscle of so as to reveal a slot for the engagement of the blade of the knife used to open the oyster (French patent COURPRON n ° 2.544.966 of April 27, 1983). Again, this is a process the use of which is limited to opening immediately before consumption in because of the loss of tightness it causes.

Plus récemment encore, on a proposé un procédé consistant à rétablir l'étanchéité de l'huítre à l'aide d'un cachet de cire après l'avoir détruite en perçant la coquille ou en pratiquant une entaille sur son bord (Brevet français LAUGRAUD et BIZIEN n° 2.622.400 du 3 novembre 1987).More recently still, a method has been proposed. consisting in restoring the seal of the oyster using a wax seal after destroying it by piercing the shell or by making a notch on its edge (Patent French LAUGRAUD and BIZIEN n ° 2.622.400 of November 3 1987).

Ce dernier procédé, s'il paraít de nature à assurer son étanchéité permettant une bonne conservation et une expédition au-delà de l'immédiate région de production, présente cependant un certain nombre d'inconvénients :This last process, if it seems likely to ensure its tightness allowing good conservation and shipment beyond the immediate production region, has a number of drawbacks, however:

D'une part, lorsque l'incision est pratiquée sur le bord de l'huítre, celle-ci une fois cachetée ne peut être remise en bassin pour l'affinage car, l'huítre s'ouvrant naturellement dans l'eau, elle perdra immédiatement son bouchon de cire.On the one hand, when the incision is made on the edge of the oyster, this once sealed cannot be re-pooled for refining because, the oyster opening naturally in water, it will immediately lose its wax stopper.

Le procédé LAUGRAUD et BIZIEN ne peut donc être utilisé que pour une préparation des huítres avant leur expédition, ce qui est certes en progrès par rapport aux procédés REB ou COURPRON, mais ne permet pas d'étaler le traitement sur toute l'année des énormes quantités d'huítres qui doivent se trouver sur le marché pendant la courte période des fêtes de fin d'année.The LAUGRAUD and BIZIEN process cannot therefore be used only for an oyster preparation before their expedition, which is certainly in progress compared to REB or COURPRON processes, but does not spread the year-round processing of huge quantities oysters that must be on the market during the short holiday season.

D'autre part, lorsque l'huítre est percée sur le dessus de la coquille (procédé REB) son ouverture présente les inconvénients précédemment décrits en termes de précision d'ouverture.On the other hand, when the oyster is pierced on the above the shell (REB process) its opening presents the disadvantages previously described in terms of opening accuracy.

En outre, la présence d'un cachet de cire qu'il faut détruire pour introduire l'outil d'ouverture risque d'introduire en même temps des particules de cire à l'intérieur de l'huítre, ce qui est désagréablement ressenti par le consommateur.In addition, the presence of a wax seal which he must be destroyed to introduce the risk opening tool to introduce particles of wax at the same time inside the oyster, which is unpleasantly felt by the consumer.

Les demandeurs ont découvert qu'en utilisant la capacité naturelle de l'huítre à rétablir elle-même son étanchéité, il devenait possible d'utiliser industriellement le procédé REB sans avoir recours au cachetage (ou rebouchage) préconisé par LAUGRAUD et BIZIEN et les inconvénients qu'il comporte.The applicants have discovered that by using the natural capacity of the oyster to restore its own sealing it became possible to use industrially the REB process without resorting to sealing (or filling) recommended by LAUGRAUD and BIZIEN and the drawbacks it entails.

En effet, les inventeurs ont constaté que lorsqu'on perce par le dessus le couvercle d'une huítre, celle-ci a naturellement tendance à plaquer son manteau, c'est-à-dire la fine membrane qui recouvre sa chair, contre la paroi interne de ladite coquille rétablissant par la même son étanchéité. Même en agitant violemment une huítre ainsi percée, il est impossible d'expulser l'eau qu'elle contient par le trou pratiqué dans la coquille supérieure.Indeed, the inventors have found that when pierces the top of an oyster, it has naturally tend to lay down his coat, that is to say the thin membrane that covers its flesh, against the wall internal of said shell restoring by the same sound sealing. Even while violently shaking an oyster like this breakthrough, it is impossible to expel the water it contains through the hole in the upper shell.

L'huítre ainsi traitée peut donc, sans aucun risque, être remise en bassin d'affinage, ce qui rend l'opération de perçage pratiquement indépendante de la date de consommation de l'huítre.The oyster thus treated can therefore, without any risk, be put back in the ripening tank, which makes the drilling operation practically independent of the date consumption of oysters.

Cependant, pour assurer l'ouverture aisée d'une huítre ainsi percée, les inventeurs ont imaginé d'ajuster dans le trou pratiqué dans la coquille supérieure un palier ouvert, adapté au diamètre de l'outil d'ouverture et qui fait fonction de guide assurant une position correcte de l'outil d'ouverture et de marqueur permettant d'identifier immédiatement l'endroit où appliquer l'outil d'ouverture.However, to ensure easy opening of a oyster thus pierced, the inventors imagined to adjust in the hole made in the upper shell a bearing open, adapted to the diameter of the opening tool and which acts as a guide ensuring correct position of the opening and marking tool to identify immediately where to apply the opening tool.

Le procédé selon l'invention est donc caractérisé en ce que après avoir percé la coquille supérieure du coquillage à proximité de son muscle adducteur, on dispose dans le trou un palier ouvert d'un diamètre adapté à celui de l'outil d'ouverture.The process according to the invention is therefore characterized in that after piercing the upper shell of the shell near its adductor muscle, we have in the hole an open bearing of a diameter adapted to that of the opening tool.

Le dispositif pour l'ouverture de coquillages bi-valves, notamment les huítres se caractérise en ce qu'il est constitué d'une part d'un palier ouvert ayant une âme tubulaire et au moins une extrémité conformée en collerette ou dôme et d'autre part d'un outil d'ouverture comportant une tige coudée à 90° et en ce que le diamètre de ladite tige, au moins dans sa partie formant pivot en position d'utilisation, correspond au diamètre interne de l'âme du palier.The device for opening bi-valve shells, in particular oysters is characterized in that it consists on the one hand of an open bearing having a core tubular and at least one end shaped as a collar or dome and other part of an opening tool comprising a rod bent at 90 ° and in that the diameter of said rod, at least in its part forming a pivot in position of use, corresponds to the internal diameter of the bearing core.

Pour assurer que le palier selon l'invention ne puisse être arraché lors des traitements mécanisés appliqués aux huítres lors de leur conditionnement avant expédition (lavage, calibrage, etc.), le palier est muni de moyens destinés à renforcer sa résistance à l'arrachement : par exemple la face externe de l'âme du palier peut être munie de nervures juxtaposées.To ensure that the bearing according to the invention does not can be torn off during mechanized treatments applied to oysters during their conditioning before shipment (washing, calibration, etc.), the bearing is provided with means intended to reinforce its resistance to tearing: for example the outer face of the bearing core can be provided with juxtaposed ribs.

A titre de variante, l'âme pourra comporter, à l'opposé de la collerette externe, une collerette interne ou un bourrelet destiné à venir en appui contre la face interne de la coquille.Alternatively, the core may include, at the opposite of the external collar, an internal collar or a bead intended to come into abutment against the face internal shell.

Quelle que soit sa configuration, le palier sera fabriqué dans un matériau déformable de qualité alimentaire de manière à pouvoir être mis en place par clipsage.Whatever its configuration, the bearing will be made of deformable food grade material so that it can be put in place by clipping.

Comme on l'aura compris de ce qui précède, l'âme tubulaire du palier sera creuse et son diamètre interne sera étroitement adapté au diamètre externe de la tige de l'outil d'ouverture.As will be understood from the above, the soul tubular bearing will be hollow and its internal diameter will be closely matched to the outer diameter of the stem the opening tool.

Ainsi, une fois mis en place dans le palier, l'outil pourra tourner sans jeu dans l'ouverture pratiquée dans la coquille supérieure de l'huítre et ainsi sectionner le muscle adducteur à coup sûr par une simple rotation d'un quart ou d'un demi-tour.So, once set up in the landing, the tool can turn without play in the opening made in the upper shell of the oyster and thus cut the adductor muscle for sure by a simple rotation of a quarter or a half turn.

L'effort de mise en place de l'outil dans son palier est négligeable et le risque de blessure nul.The effort of setting up the tool in its bearing is negligible and the risk of injury zero.

D'autres caractéristiques et avantages de l'invention ressortiront de l'exemple de réalisation ci-après en référence aux dessins annexés sur lesquels

  • la figure 1 est une vue schématique en coupe transversale d'une huítre à l'état naturel ;
  • la figure 2 est une vue analogue à celle de la figure 1 après perçage du trou dans la coquille supérieure ;
  • la figure 3 est une vue partielle de détail de la figure 2 après mise en place d'un palier de guidage de l'outil d'ouverture, conformément à l'invention ;
  • la figure 4 est une vue analogue à celles des figures 1 et 2, l'outil d'ouverture ayant été mis en place dans le palier ;
  • la figure 5 est une vue en coupe verticale agrandie d'un premier exemple de réalisation d'un palier pour la mise en oeuvre du procédé selon l'invention ;
  • la figure 6 est une vue en coupe verticale agrandie d'un autre exemple de réalisation du palier de la figure 5.
  • Les figures 7a et 7b sont des vues respectivement en coupe verticale et en perspective de dessus d'un troisième exemple de réalisation d'un palier selon l'invention.
  • La figure 8 est une vue en élévation d'un outil spécialement conçu pour l'ouverture des huítres à travers le palier des figures 7a et 7b.
Other characteristics and advantages of the invention will emerge from the embodiment below with reference to the appended drawings in which
  • Figure 1 is a schematic cross-sectional view of an oyster in its natural state;
  • Figure 2 is a view similar to that of Figure 1 after drilling the hole in the upper shell;
  • Figure 3 is a partial detail view of Figure 2 after establishment of a guide bearing of the opening tool, according to the invention;
  • Figure 4 is a view similar to those of Figures 1 and 2, the opening tool having been placed in the bearing;
  • Figure 5 is an enlarged vertical sectional view of a first embodiment of a bearing for the implementation of the method according to the invention;
  • FIG. 6 is an enlarged vertical section view of another exemplary embodiment of the bearing of FIG. 5.
  • Figures 7a and 7b are views respectively in vertical section and in perspective from above of a third embodiment of a bearing according to the invention.
  • Figure 8 is an elevational view of a tool specially designed for the opening of oysters through the bearing of Figures 7a and 7b.

Sur la figure 1, on voit schématiquement qu'une huítre comporte deux coquilles, une coquille supérieure 1 et une coquille inférieure 2, articulées entre elles par un ligament formant la charnière 5.In FIG. 1, it can be seen schematically that a oyster has two shells, an upper shell 1 and a lower shell 2, hinged together by a ligament forming the hinge 5.

A l'intérieur, les coquilles sont reliées entre elles par le muscle adducteur 3 qui est lui-même entouré par le corps 4 de l'huítre, ce corps étant enveloppé par une membrane fine au contour cilié dénommée communément manteau 6.Inside, the shells are connected between them by the adductor muscle 3 which is itself surrounded by the body 4 of the oyster, this body being enveloped by a thin membrane with a ciliated outline commonly called coat 6.

Sur la figure 2 on voit que le procédé selon l'invention consiste dans une première étape et de façon connue en soi à pratiquer sur la coquille supérieure 2 à proximité immédiate du muscle adducteur 3 un trou 7 permettant l'introduction ultérieure d'un outil 9 (figure 4) destiné à sectionner par un mouvement de rotation ledit muscle adducteur 3.In Figure 2 we see that the method according to the invention consists in a first step and so known per se to practice on the upper shell 2 to immediate proximity of the adductor muscle 3 a hole 7 allowing the subsequent introduction of a tool 9 (figure 4) intended to cut through said rotational movement adductor muscle 3.

En pratique, on percera un trou d'environ 3 à 5 mm de diamètre, et de préférence 3,5 à 4 mm, à l'aide d'une perceuse ou d'une chignole dont le foret assure un calibrage parfait du trou et une évacuation vers l'extérieur des débris de coquille qui ne peuvent ainsi pénétrer à l'intérieur de l'huítre.In practice, we will drill a hole of about 3 to 5 mm diameter, and preferably 3.5 to 4 mm, using a drill or chignole whose drill bit provides a perfect hole calibration and evacuation to the exterior of shell debris which cannot so get inside the oyster.

A ce stade, l'huítre ainsi percée rétablit naturellement son étanchéité en plaquant son manteau 6 contre la face interne de sa coquille supérieure 1. At this stage, the oyster thus pierced restores naturally its tightness by plating its coat 6 against the inner face of its upper shell 1.

Sur la figure 3 est illustrée la seconde étape caractéristique du procédé selon l'invention à savoir la mise en place dans le trou ainsi pratiqué d'un palier 8 destiné à guider parfaitement l'outil d'ouverture 9. On voit que grâce à ce procédé qui utilise la capacité naturelle de l'huítre à rétablir elle-même son étanchéité, on évite l'emploi de tout matériau de bouchage ou de cachetage.In Figure 3 is illustrated the second step characteristic of the process according to the invention, namely the placement in the hole thus made of a bearing 8 intended to perfectly guide the opening tool 9. On sees that thanks to this process which uses the capacity natural oyster to restore its own seal, the use of any plugging material or sealing.

En pratique, le palier aura la forme générale d'un champignon creux avec une tête convexe 10, une âme cylindrique 11 et des moyens pour renforcer sa résistance à l'arrachement, tels que le bourrelet 12 (figure 5) disposé à l'extrémité opposé à la tête 10 de l'âme 11, de manière à enserrer les deux faces de la coquille 1.In practice, the bearing will have the general form of a hollow mushroom with a convex head 10, a soul cylindrical 11 and means for strengthening its resistance to tearing, such as the bead 12 (Figure 5) disposed at the end opposite the head 10 of the core 11, so that enclose both sides of the shell 1.

Le diamètre interne de l'âme 11 sera de préférence de l'ordre de 2 à 2,5 mm. Le palier 8 sera fabriqué dans une matière plastique souple de qualité alimentaire de sorte que sa mise en place pourra se faire aisément par simple clipsage.The internal diameter of the core 11 will preferably be in the range of 2 to 2.5 mm. The bearing 8 will be manufactured in flexible food-grade plastic so that its installation can be done easily by simple clipping.

Dans l'exemple de la figure 6, les moyens pour renforcer la résistance à l'arrachement du palier 8 sont constitués par des nervures 13 disposées sur le diamètre extérieur de l'âme 11.In the example of FIG. 6, the means for reinforce the pullout resistance of the bearing 8 are formed by ribs 13 arranged on the diameter outside of core 11.

Selon un mode de réalisation non représenté, ces nervures peuvent être constituées par des godrons verticaux eux-mêmes striés sur leur face externe par des rainures horizontales ou obliques ce qui détermine des sculptures renforçant l'adhérence de l'âme du palier 8 sur la paroi du trou 7.According to an embodiment not shown, these ribs may be formed by vertical gadroons themselves striated on their external face by grooves horizontal or oblique which determines the sculptures strengthening the adhesion of the core of the bearing 8 on the wall of the hole 7.

On voit sur la figure 6, que du fait de la présence de ces sculptures 13 il n'est pas nécessaire de prévoir un bourrelet d'arrêt 12 comme dans l'exemple de la figure 5. Cependant, sans sortir du cadre de l'invention, le palier 8 pourra présenter en combinaison un bourrelet 12 et des sculptures 13.We see in Figure 6, that due to the presence of these sculptures 13 it is not necessary to provide a stop bead 12 as in the example in FIG. 5. However, without departing from the scope of the invention, the bearing 8 may have in combination a bead 12 and sculptures 13.

Sur la figure 4, on voit que l'outil 9 se présente sous forme d'une tige 14 coudée à 90° d'un diamètre correspondant au diamètre interne du palier 8, au moins dans sa partie formant pivot en position d'utilisation. A l'extrémité opposée à la pointe de la tige 14, se trouve un organe de manoeuvre tel qu'une poignée 15 ou un oeillet.In Figure 4, we see that the tool 9 is presented in the form of a rod 14 bent at 90 ° with a diameter corresponding to the internal diameter of the bearing 8, at least in its pivot part in the use position. AT the end opposite to the tip of the rod 14, is a operating member such as a handle 15 or an eyelet.

Grâce à la déformabilité du palier 8, il est possible d'introduire facilement l'outil à l'intérieur de la coquille jusqu'à ce qu'il soit dans la position représentée sur la figure 4. Il suffit alors d'imprimer une rotation d'un quart de tour dans le sens horaire de préférence, pour sectionner sans difficulté le muscle adducteur 3, l'outil étant parfaitement tenu verticalement dans la palier 8. Une traction sur l'outil après sectionnement du muscle 3 permet de détacher la coquille supérieure 1 du reste de l'huítre par rupture du ligament 5.Thanks to the deformability of the bearing 8, it is easy to insert the tool inside the shell until it is in the position shown in Figure 4. Then simply print a quarter-turn clockwise preferably, to easily cut the muscle adductor 3, the tool being perfectly held vertically in bearing 8. Traction on the tool after sectioning the muscle 3 detaches the shell upper 1 of the rest of the oyster by rupture of the ligament 5.

On voit également, que le palier 8 procure l'avantage de rester en place lors de l'insertion de l'outil 9, ce qui n'est pas le cas dans les procédés faisant appel au bouchage ou au cachetage dans lesquels il est nécessaire de retirer le bouchon ou le cachet de cire avant de pouvoir introduire l'outil d'ouverture.We also see that the bearing 8 provides the advantage of staying in place when inserting tool 9, which is not the case in the processes using plugging or sealing in which it it is necessary to remove the wax plug or seal before you can insert the opening tool.

Selon une autre variante de réalisation illustrée sur les figures 7a et 7b, la tête 10 du palier est configurée en pente tandis que la poignée de l'outil 9 présente une face inférieure également en pente 16 susceptible de venir en appui sur la pente de la tête du palier.According to another illustrated embodiment in FIGS. 7a and 7b, the head 10 of the bearing is configured in slope while the handle of the tool 9 has a lower face also sloping 16 likely to come to rest on the slope of the head of the bearing.

Par ce moyen, on obtient que lors de la rotation de l'outil, la partie formant couteau de la tige de l'outil soit automatiquement plaquée contre la face interne de la coquille supérieure ce qui assure une meilleure découpe du muscle adducteur 3 au ras de la coquille.By this means, we obtain that during the rotation of the tool, the knife portion of the tool shank either automatically pressed against the internal face of the upper shell which ensures better cutting of the adductor muscle 3 flush with the shell.

L'invention n'est pas limitée aux exemples de réalisation ci-dessus décrits et couvre de nombreuses formes de réalisation du palier. Celui-ci peut être une simple tige creuse sans tête d'une longueur sensiblement égale à l'épaisseur de la coquille supérieure ; il peut avoir une forme en diabolo, avoir une tête plate etc... The invention is not limited to the examples of achievement described above and covers many embodiments of the bearing. This can be a simple hollow headless rod of substantially length equal to the thickness of the upper shell; he can have a diabolo shape, have a flat head etc ...

Comme indiqué précédemment l'application de la présente invention n'est pas limitée aux huítres, mais peut concerner tous les coquillages bi-valves dont l'ouverture se fait par sectionnement d'un muscle adducteur.As previously indicated the application of the present invention is not limited to oysters, but can concern all bi-valve shells whose opening is done by sectioning an adductor muscle.

Claims (9)

  1. A method of treating bivalvular shell-fish, in particular oysters, to facilitate their opening, in which a hole is made in the top shell of the shell-fish close to the adductor muscle, characterised in that in the said hole an open bush (8) is fixed, the internal diameter of which is adapted to the external diameter of the pin of the opening tool (9).
  2. A device for opening bivalvular shell-fish, in particular oysters, characterised in that it is composed on the one hand of an open bush (8) having a tubular core and at least one end shaped like a collar or dome (10) and on the other hand of an opening tool (9) comprising a pin (14) bent at an angle of 90° and in that the diameter of the said pin, at least in its part forming a pivot in its position of use, corresponds to the internal diameter of the core of the bush (8).
  3. A device according to Claim 2, characterised in that the bush (8) comprises means (12, 13) for increasing its resistance to extraction.
  4. A device according to Claim 3, characterised in that the extraction resistance means of the bush (8) are composed of a bead (12) disposed at the end of the core (11) opposite the collar (10).
  5. A device according to Claim 3, characterised in that the extraction resistance means of the bush (8) are composed of grooves (13) disposed on the external surface of the core (11).
  6. A device according to any one of Claims 2 to 5, characterised in that the head of the bush (8) has a slope co-operating with a similar slope (16) of the opening tool (9).
  7. A device according to any one of Claims 2 to 6, characterised in that the bush (8) is manufactured from a deformable plastic material for food use.
  8. A device according to any one of Claims 2 to 7, characterised in that the external diameter of the core of the bush (8) is of the order of 3 to 5 mm and its internal diameter is of the order of 2 to 2.5 mm.
  9. A bivalvular shell-fish, in particular an oyster, characterised in that on its top shell (1), close to its adductor muscle (3), it has a bush (8) according to any one of Claims 2 to 8.
EP97911294A 1996-10-23 1997-10-20 Method for treating bivalvular shell-fish to facilitate their opening Expired - Lifetime EP0934012B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9612885 1996-10-23
FR9612885A FR2754694B1 (en) 1996-10-23 1996-10-23 PROCESS FOR TREATING TWO-VALVE SHELLS TO FACILITATE THEIR OPENING
PCT/FR1997/001869 WO1998017158A1 (en) 1996-10-23 1997-10-20 Method for treating bivalvular shell-fish to facilitate their opening

Publications (2)

Publication Number Publication Date
EP0934012A1 EP0934012A1 (en) 1999-08-11
EP0934012B1 true EP0934012B1 (en) 2000-12-13

Family

ID=9496918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97911294A Expired - Lifetime EP0934012B1 (en) 1996-10-23 1997-10-20 Method for treating bivalvular shell-fish to facilitate their opening

Country Status (5)

Country Link
EP (1) EP0934012B1 (en)
ES (1) ES2154895T3 (en)
FR (1) FR2754694B1 (en)
PT (1) PT934012E (en)
WO (1) WO1998017158A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2780260B1 (en) * 1998-06-30 2000-09-15 Jacques Pitoux DEVICE FOR OPENING OYSTERS
FR2784881A1 (en) * 1998-10-23 2000-04-28 Gabriel Albert Marie Guilloux Preparation of oysters for opening, in a way which allows storage without ingress of infection, comprises drilling a hole near its adducter muscle and plugging it with a capillary tube
CA2925133A1 (en) * 2013-09-26 2015-04-02 Fisheries Research And Development Corporation Method of preparing a bivalve mollusc

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR926488A (en) * 1946-04-12 1947-10-02 Anciens Etablissements Panhard Sealing ring, in particular for the connection of pipes to tanks
FR1194003A (en) * 1958-03-28 1959-11-06 Method and apparatus for opening oysters
SE380144B (en) * 1973-05-15 1975-10-27 Ericsson Telefon Ab L M
FR2542597A1 (en) * 1983-03-18 1984-09-21 Nicolas Rene Household appliance for opening oysters
FR2622400B1 (en) * 1987-11-03 1990-03-09 Laugraud Bernard PROCESS FOR TREATING SHELLS, ESPECIALLY OYSTERS, FOR FACILITATING OPENING BEFORE CONSUMPTION
US5029879A (en) * 1988-08-24 1991-07-09 Injection Plastics Manufacturing Company, Inc. Seal for pipe to wall junctions
FR2668033A1 (en) * 1990-10-19 1992-04-24 Lanchier Jean Marc Knife guide device inserted in advance between the valves of oysters and shellfish in order to facilitate opening thereof

Also Published As

Publication number Publication date
PT934012E (en) 2001-04-30
FR2754694B1 (en) 1998-12-31
ES2154895T3 (en) 2001-04-16
EP0934012A1 (en) 1999-08-11
FR2754694A1 (en) 1998-04-24
WO1998017158A1 (en) 1998-04-30

Similar Documents

Publication Publication Date Title
EP0814692B1 (en) Device for using ground coffee or pre-packaged coffee blocks in a coffee machine
CA2426840C (en) Device for improving extraction of a food substance contained in a refill element
FR2507573A1 (en) PERFORABLE BEVERAGE CONTAINER WITH STRAW
EP0378136A1 (en) Citrus fruit pulp cutter
FR2578411A3 (en) APPARATUS FOR CLEANING FOR THEIR CONSUMPTION OF FRUITS HAVING A CENTRAL CORE AND AN OUTER BARK FOR DISPOSING
FR2541260A1 (en) CORKSCREW
EP0080427B1 (en) Tool for opening oysters or other similar bivalve shell molluscs
EP0934012B1 (en) Method for treating bivalvular shell-fish to facilitate their opening
EP0955813B1 (en) Process and device for preparing bivalves, in particular oysters, for opening
FR2515534A1 (en) Injector for instant adhesive - has container closed by thin film pierced using an extension nozzle (BR 1.6.82)
EP0667298B1 (en) Overmoulded stopper
FR2745484A1 (en) Device for easy opening of oyster shells
FR2659298A1 (en) Assembly of a tube made of plastic material and an accessory for cutting its seal, and corresponding cutting method
FR2766163A1 (en) Easily extracted bottle cork and its extractor
FR2668033A1 (en) Knife guide device inserted in advance between the valves of oysters and shellfish in order to facilitate opening thereof
FR2739539A1 (en) Rod to open shellfish inserted into shell, e.g. oysters
FR2955742A1 (en) Detachable stopper for closing cylindrical opening located at level of hinge of bivalve mollusks e.g. oyster, has sealed conical or cylindrical part, shutter, positioning stopper and disc that are realized using same material
FR2515930A1 (en) APPARATUS AND METHOD FOR EXTRACTING A MOLLUSC FROM ITS SHELL
WO2000000067A1 (en) Oyster opening device
FR2781658A1 (en) Preparation of oyster to facilitate opening by boring hole through shell shaped to allow inclined insertion of blade used to cut through adductor muscle
FR2760343A1 (en) Plug and tool to open oyster shell
FR2680654A1 (en) Bottle for perfume
FR2761233A1 (en) PROCESS FOR TREATING BIVALVE FOR THEIR PREPARATION FOR OPENING, DEVICE FOR IMPLEMENTING SAME AND BIVALVES THUS OBTAINED
FR2759563A1 (en) Device for opening oyster shells
FR2774881A1 (en) Grater to abrade oyster before opening it

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990415

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE ES FR IT LU NL PT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20000210

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE ES FR IT LU NL PT

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2154895

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20010205

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20021009

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040430

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20040430

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20041029

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20041031

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20041104

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20041112

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20041123

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Ref country code: FR

Ref legal event code: CA

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051020

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051021

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051031

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060630

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20060501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060630

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20051021

BERE Be: lapsed

Owner name: *OSTRAQUICK S.A.R.L.

Effective date: 20051031