EP0934012B1 - Method for treating bivalvular shell-fish to facilitate their opening - Google Patents
Method for treating bivalvular shell-fish to facilitate their opening Download PDFInfo
- 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
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- 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
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- 238000000034 method Methods 0.000 title claims description 17
- 235000015170 shellfish Nutrition 0.000 title claims 5
- 241000237502 Ostreidae Species 0.000 claims description 37
- 235000020636 oyster Nutrition 0.000 claims description 37
- 210000003205 muscle Anatomy 0.000 claims description 17
- 239000011324 bead Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 235000013305 food Nutrition 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 3
- 241000237983 Trochidae Species 0.000 claims 2
- 238000007789 sealing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 210000003041 ligament Anatomy 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 241000237519 Bivalvia Species 0.000 description 1
- 241000237503 Pectinidae Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 235000020639 clam Nutrition 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 235000020637 scallop Nutrition 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G21/00—Table-ware
- A47G21/06—Combined or separable sets of table-service utensils; Oyster knives with openers; Fish servers with means for removing bones
- A47G21/061—Oyster knives with openers; Shellfish openers
- A47G21/068—Devices 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.
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- 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.
- 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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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)
- 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).
- 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).
- A device according to Claim 2, characterised in that the bush (8) comprises means (12, 13) for increasing its resistance to extraction.
- 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).
- 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).
- 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).
- 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.
- 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.
- 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.
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)
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)
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 |
-
1996
- 1996-10-23 FR FR9612885A patent/FR2754694B1/en not_active Expired - Fee Related
-
1997
- 1997-10-20 PT PT97911294T patent/PT934012E/en unknown
- 1997-10-20 WO PCT/FR1997/001869 patent/WO1998017158A1/en active IP Right Grant
- 1997-10-20 ES ES97911294T patent/ES2154895T3/en not_active Expired - Lifetime
- 1997-10-20 EP EP97911294A patent/EP0934012B1/en not_active Expired - Lifetime
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 |
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