EP2324889B1 - Flipper provided with an asymmetrically bending blade - Google Patents

Flipper provided with an asymmetrically bending blade Download PDF

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Publication number
EP2324889B1
EP2324889B1 EP10191157.6A EP10191157A EP2324889B1 EP 2324889 B1 EP2324889 B1 EP 2324889B1 EP 10191157 A EP10191157 A EP 10191157A EP 2324889 B1 EP2324889 B1 EP 2324889B1
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EP
European Patent Office
Prior art keywords
flexible
wing section
flipper
flexible wing
wing
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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.)
Not-in-force
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EP10191157.6A
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German (de)
French (fr)
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EP2324889A1 (en
Inventor
Guillaume Gouvernet
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Decathlon SE
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Decathlon SE
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Publication date
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Publication of EP2324889A1 publication Critical patent/EP2324889A1/en
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Publication of EP2324889B1 publication Critical patent/EP2324889B1/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B31/00—Swimming aids
    • A63B31/08—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs
    • A63B31/10—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet
    • A63B31/11—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet attachable only to the feet

Definitions

  • the invention relates to a swimming fin; it can also be used as a bodybuilding tool in water.
  • Current fins include a slipper and a sail.
  • the liner may be closed or open at the rear, the foot being, in this case, held in said boot open by means of a strap bearing on the heel.
  • the wing extends forward of the boot to which it is subject.
  • the wing flexes respectively downwards and upwards.
  • the knee extends and the hip flexes, while inversely, during the ascent phase, the knee flexes and the hip extends; the swimmer has more power during the descent phase than the climb phase.
  • a major disadvantage of the current fins is not to exploit this variation of power during the flapping of the feet since the wing flexes identically in one direction or the other during the flapping of the feet, that is to say that the wing flexes symmetrically.
  • the state of the art also includes the document US 6,159,064 proposing a palm that, in use mode, presents: a) a push down of the leg and foot of its difficult user, and b) a push up of the leg and the foot of its easy user.
  • the present invention however aims to simplify the design, strength and performance of such a palm.
  • the invention relates to a fin comprising a boot which can be opened or closed at the rear, as it already exists on the current fins, said boot being extended forward by a flexible wing, it is that is to say that this wing is fixed to the front of the liner, the fixing of the wing with the boot can be achieved by any known means such as for example by overmolding the flexible wing in the front of the boot.
  • the fin comprises at least one flexible element comprising at least two branches extending in the lengthwise direction under the flexible wing and a base, securing means being arranged between the base of this flexible element and the proximal portion of the flexible wing, that is to say that located near the front end of the liner.
  • the flexible element acts as a stiffener, the latter being in action during a downward movement of the palm while it is not stressed during a climbing movement.
  • the wing is supported on the flexible element, which increases the stiffness of the wing.
  • the flexible wing flexes independently of the flexible member, its stiffness is not increased.
  • the flexible wing flexes asymmetrically, the palm opposing a greater effort during a downward movement than during a climbing movement, which optimizes the exploitation of the power of the legs during the beat feet or using the palm as a weight training tool to make the muscular groups of the legs work differently.
  • the securing means consist of a removable fastening system, which has the advantage of being able to replace the flexible elements, for example in case of deterioration thereof or to modify the stiffness of said flexible elements and thus, to vary the asymmetrical sag, for example depending on the user.
  • these securing means may consist of a traditional fastening system, that is to say non-removable, without departing from the scope of the present invention, such a fastening system can in this case and for example be implemented by overmolding the proximal portion of the wing on the proximal portion of the flexible elements.
  • the proximal part of the flexible wing comprises at least one orifice and the proximal portion of the flexible element comprises at least one fixing head passing through said orifice on the flexible wing.
  • at least one removable attachment piece cooperates with said at least one fixing head so as to sandwich the flexible wing between the flexible element and the at least one attachment piece.
  • other removable fastening systems are possible without departing from the scope of the present invention.
  • the at least one attachment head comprises a longitudinal slot and at its end, a flange extending outwardly from the periphery of said fixing head.
  • the attachment piece has at least one orifice through which is able to pass the flange when the longitudinal slot of the fixing head is compressed.
  • the at least one fixing head has a length corresponding to the total thickness of the flexible wing, in its proximal portion where the securing means and the attachment piece are arranged.
  • the two branches extend respectively close to the lateral edges of the flexible wing.
  • a flexible element comprising a larger number of branches, for example, three branches, two of the branches being disposed near the lateral edges of the flexible wing and the third disposed in the central portion of said flexible wing.
  • these branches are all interconnected by means of a single base or that each of said branches have an individual base constituting the proximal portion of the flexible element, subject to the proximal portion of the flexible wing.
  • the longitudinal branches are interconnected by a single base comprising three fastening heads uniformly distributed vis-à-vis the proximal portion of the wing.
  • the attachment piece and the flexible wing each comprise three orifices distributed uniformly, identically to the three fastening heads on the base.
  • the securing means are disposed in the first quarter of the flexible wing.
  • the flexible element and in particular the flexible branches extend over a length corresponding to three quarters of the length of the flexible wing.
  • the flexible element disposed on the flexible wing has a rigidity greater than that of said flexible wing.
  • the palm object of the present invention in addition to the aforementioned characteristics, it comprises a removable fastening device which is arranged between the boot and the flexible wing.
  • This has the advantage of making the liner removable from the flexible sails especially in order to adapt the boot according to the foot of the user.
  • the boot comprises a rigid plate and a flexible footwear element which is disposed above the rigid plate.
  • This rigid plate and this soft footwear element are secured to each other.
  • the flexible wing comprises a flexible wing portion extended rearwardly by a rigid support portion.
  • latching means are arranged between the support portion and the rigid plate.
  • the rigid plate and the flexible footwear are independent of each other, assembly means being arranged between the rigid plate and the flexible footwear element.
  • This has the advantage of retaining the rigid plate and to adapt only the soft footwear according to the foot of the user.
  • the rigid plate and the flexible footwear are made of one and the same indissociable element, the rigid plate being for example overmolded on the footwear element.
  • the rigid bearing portion of the flexible wing comprises a proximal central edge, disposed transversely on the flexible wing, and two bearing branches extending longitudinally rearwardly relative to the sides lateral of the proximal central edge.
  • the latching means are arranged between the proximal central edge of the bearing portion and the front edge of the rigid plate and between the distal ends of the two bearing branches of said rigid bearing portion and the two rear side ends of the rigid plate.
  • palm 1 comprises in a traditional manner, a slipper 2 and a sail 3.
  • the shoe 2 is closed, that is to say, it completely surrounds the foot.
  • an open liner at its rear end which comprises, in this case, a strap bearing on the heel of the foot.
  • the flexible wing 3 is secured to the front of the liner, as is illustrated in particular on the Figures 1 and 2 .
  • the proximal end of the blade is overmolded on the shoe.
  • This flexible wing 3 is capable of flexing during the movements of descent and rise of the palm during the foot beats, as illustrated in FIG. figure 3 .
  • the palm 1 comprises a flexible element 4 which is arranged below the wing 3.
  • This flexible element 4 preferably comprises two flexible branches 14, 15 which extend longitudinally up to three quarters of the length of the wing. , close to the lateral edges 17, 18 of said wing 3, as illustrated in FIG. figure 1 .
  • these flexible branches 14,15 are interconnected by a base 16 which preferably has a curved shape conforming to the contour 2
  • This base 16 constituting the proximal portion 6 of the flexible element 4, is secured to the proximal portion of the wing 3 by securing means 5, as shown in FIGS. Figures 1 and 2 .
  • a fastening system 5 is arranged between the base 16 and the proximal portion 7 of the wing.
  • this fastening system is constituted, on the one hand, by fixing heads 9, as illustrated in FIG. figure 2 .
  • the fixing head passes through an orifice 8 arranged on the proximal portion 7 of the blade 3.
  • a fastening piece 10 also comprises an orifice 13 through which the fastening head is able to pass.
  • the fixing head comprises a longitudinal slot 11 illustrated in FIG. figure 2 and a flange 12 extending outwardly at the end of said fastener head 9. When the longitudinal slot 11 is compressed, the flange 12 has a smaller diameter than those of the orifices 8 and 13, respectively on the wing 3 and the attachment piece 10.
  • the attachment head 9 passes through the orifice 8 on the wing and then through the orifice 13 of the attachment piece 10, keeping the longitudinal slot 11 compressed.
  • the rim 12 resumes its normal diameter greater than the diameter of the orifices 8 and 13 respectively on the wing 3 and on the attachment piece 10, which makes it possible to hold the attachment piece 10 in position , wedged by the rim 12 and thus to sandwich the wing 3 between the base 16 and said attachment piece 10.
  • the length of the fastening head 9 corresponds more or less to the total thickness of the wing 3 in its proximal portion 17 and the attachment piece 10, which ensures a proper fastening between the base 16, the wing 3 and the fastening piece 10 wedged by the flange 12.
  • fixing heads 9 are arranged on the base 16, said fixing heads being uniformly distributed vis-à-vis the proximal portion 17 of the wing 3.
  • This wing 3 has accordingly in its proximal portion of three holes 8 distributed identical to the position of the fastening heads 9.
  • the attachment piece 10 comprises shapes and dimensions corresponding more or less to those of the base 16 of the flexible element 4, this attachment piece 10 further comprising three orifices 13 uniformly distributed identically to the 8 of the canals 3 and the position of the three attachment heads 9 on the base 16. It would however be possible to provide three separate attachment pieces for each of the attachment heads 9 on the base 16. In addition, it is of course possible to provide a different number of fixing heads on the base 16. It would also be possible to provide individual branches 14,15, that is to say not connected by a single base 16, means of subjection being implemented directly at the proximal portion of said branches and at the proximal portion 7 of the wing 3.
  • the securing between the base 16 of the flexible element 4 and the proximal portion 7 of the wing 3 is disposed in the first quarter of said wing 3, while the branches 14 and 15 of the flexible element 4 extend over a length corresponding more or less to three quarters of the flexible wing 3, on its lateral edges 17,18.
  • these flexible branches have a stiffness greater than that of the wing 3. This is however not limiting since it is possible, because of the removable nature of the attachment piece 10, to replace the flexible element 4 by another having a different stiffness, more or less important, possibly lower than the stiffness of the wing.
  • FIGS. Figures 1 to 3 illustrate a variant of the design of the palm which incorporates all the aforementioned characteristics of the description as to the embodiment of the flexible element 4 illustrated in FIGS. Figures 1 to 3 .
  • the boot 200 is removable from the wing 300.
  • the shoe 200 comprises a plate 201 which is made of a rigid material, and a footwear element 202 which is made of a flexible material.
  • the footwear element 202 is independent of the rigid plate 201.
  • This footwear element 202 is fixed above the rigid plate 201 by means of tether straps 203, 204. It could however be envisaged that this rigid plate 201 and this footwear element 202 are made in one and the same piece, for example by overmolding the material of the rigid plate on the material of the flexible footwear element.
  • the flexible wing 300 comprises a flexible wing portion 301 and a bearing portion 302, more rigid than the wing portion 301.
  • This bearing portion 302 comprises a proximal central edge 303 disposed transversely on the wing 300 and two branches of 304,305 which extend longitudinally towards the rear of the flexible wing and are arranged on the lateral sides with respect to the proximal central edge 303.
  • the ends 306, 307 of these support branches 304, 305 are interconnected by a transverse connecting element 308.
  • Figures 4a, 4d that the proximal central edge 303 comprises an engagement tab 309.
  • the ends 306, 307 of the two support branches 304, 305 each comprise interlocking tabs 310, 31.
  • These interlocking tabs 310,311 of the support legs 304,305 are configured to have a flexibility allowing a slight deformation thereof so as to allow the engagement of the shoe 200.
  • the rigid plate 201 of the shoe 200 comprises at its front edge a notch 205, as illustrated on the figure 4d .
  • the first rear side end of the plate 201 comprises a notch 206.
  • Such a notch is also provided on the second rear lateral end of the plate 201.
  • the positioning of the boot 200 on the flexible wing 300 is performed by positioning the notch 205 at the front edge of the rigid plate 201 in the locking tab 309 and then pressing the rear end of the plate 201, which allows a movement of the locking tabs 310, 311 at the ends 306, 307 of the two support branches 304, 305 in the direction of the arrows 401, 402 illustrated in FIG. figure 4d , until said engagement tabs 310,311 snap onto the notches 206 disposed at the rearward lateral ends of the rigid plate 201.
  • the transverse element 308 advantageously makes it possible to ensure sufficient rigidity of the bearing portion 302 so as to prevent the support legs 304, 305 from diverging during the use of the fin, thereby ensuring proper engagement. slipper 200 on the flexible wing 300. This transverse element 308 also contributes to the transmission of effort during the practice of swimming.

Description

L'invention concerne une palme de natation ; celle-ci peut en outre être utilisée comme outil de musculation dans l'eau.The invention relates to a swimming fin; it can also be used as a bodybuilding tool in water.

Les palmes actuelles comprennent notamment un chausson et une voilure. Le chausson peut être fermé ou ouvert sur l'arrière, le pied étant, dans ce cas, maintenu dans ledit chausson ouvert au moyen d'une sangle prenant appui sur le talon. La voilure s'étend vers l'avant du chausson auquel elle est assujettie.Current fins include a slipper and a sail. The liner may be closed or open at the rear, the foot being, in this case, held in said boot open by means of a strap bearing on the heel. The wing extends forward of the boot to which it is subject.

Lors de la nage, c'est-à-dire lors d'un mouvement de montée et d'un mouvement de descente de la palme correspondant à un battement des pieds, la voilure fléchit respectivement vers le bas et vers le haut. Durant la phase de descente, le genou s'étend et la hanche fléchit tandis qu'inversement, durant la phase de montée, le genou fléchit et la hanche s'étend ; le nageur dispose de plus de puissance durant la phase de descente que la phase de montée. Un inconvénient majeur des palmes actuelles est de ne pas exploiter cette variation de puissance durant le battement de pieds étant donné que la voilure fléchit de manière identique dans un sens ou dans l'autre lors du battement des pieds, c'est-à-dire que la voilure fléchit de manière symétrique.During swimming, that is to say during a climbing movement and a descent movement of the palm corresponding to a flapping of the feet, the wing flexes respectively downwards and upwards. During the descent phase, the knee extends and the hip flexes, while inversely, during the ascent phase, the knee flexes and the hip extends; the swimmer has more power during the descent phase than the climb phase. A major disadvantage of the current fins is not to exploit this variation of power during the flapping of the feet since the wing flexes identically in one direction or the other during the flapping of the feet, that is to say that the wing flexes symmetrically.

Il est connu le document FR 1.361.410 qui divulgue une palme ayant pour objet de pouvoir faire varier la flexibilité de la voilure. Pour cela, des conduits longitudinaux sont agencés sur le dessous de la voilure, lesquels permettent l'introduction de barrettes de raidissement. Une telle conception permet certes de remplacer des barrettes par d'autres barrettes plus ou moins flexibles permettant de faire varier la flexibilité de la voilure. Cette conception assure toutefois un fléchissement symétrique de la voilure durant les battements des pieds lors de la nage.It is known the document FR 1,361,410 which divulges a palm whose object is to be able to vary the flexibility of the wing. For this, longitudinal ducts are arranged on the underside of the wing, which allow the introduction of stiffening bars. Such a design certainly allows to replace the bars by other more or less flexible bars to vary the flexibility of the wing. This design, however, ensures a symmetrical deflection of the wing during the flapping of the feet during swimming.

Il est également connu le document DE-43.38610 qui divulgue une palme comprenant un chausson, une voilure et deux éléments flexibles fixés au chausson et s'étendant vers l'avant de la palme, respectivement au dessus et au dessous de la voilure. Cela permet, en fonction de la flexibilité de chacun des deux éléments flexibles, d'obtenir un fléchissement dissymétrique de la voilure lors d'un mouvement de descente et de montée de la palme durant la nage. La palme objet de la présente invention a pour but de pallier cet inconvénient existant sur les palmes actuelles. Un autre but de la palme objet de la présente invention est de faire travailler différemment les groupes musculaires du nageur, permettant ainsi d'utiliser la palme comme outil de musculation spécifique. Ces objectifs sont également atteints avec la palme selon le document DE-43.38610 . La présente invention a toutefois pour objet de simplifier la conception d'une telle palme.It is also known the document DE-43.38610 which discloses a fin comprising a boot, a wing and two flexible elements attached to the boot and extending towards the front of the fin, respectively above and below the wing. This allows, depending on the flexibility of each the two flexible elements, to obtain an asymmetrical deflection of the wing during a downward movement and rise of the palm during swimming. The object of the present invention aims to overcome this disadvantage existing on the current fins. Another purpose of the palm object of the present invention is to work differently the muscle groups of the swimmer, thus allowing to use the palm as a specific bodybuilding tool. These objectives are also achieved with palm according to the document DE-43.38610 . The present invention however aims to simplify the design of such a palm.

L'état de la technique comporte également le document US 6 159 064 proposant une palme qui, en mode utilisation, présente : a) une poussée vers le bas de la jambe et du pied de son utilisateur difficile, et b) une poussée vers le haut de la jambe et du pied de son utilisateur facile. La présente invention a toutefois pour objet de simplifier la conception, la solidité et les performances d'une telle palme.The state of the art also includes the document US 6,159,064 proposing a palm that, in use mode, presents: a) a push down of the leg and foot of its difficult user, and b) a push up of the leg and the foot of its easy user. The present invention however aims to simplify the design, strength and performance of such a palm.

A cet effet, l'invention concerne une palme comprenant un chausson qui peut être ouvert ou fermé à l'arrière, tel que cela existe déjà sur les palmes actuelles, ledit chausson étant prolongé vers l'avant par une voilure flexible, c'est-à-dire que cette voilure est fixée à l'avant du chausson, la fixation de la voilure avec le chausson pouvant être réalisée par tout moyen connu comme par exemple par surmoulage de la voilure flexible à l'avant du chausson. Selon l'invention, la palme comprend au moins un élément flexible comprenant au moins deux branches s'étendant dans le sens de la longueur sous la voilure flexible et une base, des moyens d'assujettissement étant agencés entre la base de cet élément flexible et la partie proximale de la voilure flexible, c'est-à-dire celle située à proximité de l'extrémité avant du chausson.For this purpose, the invention relates to a fin comprising a boot which can be opened or closed at the rear, as it already exists on the current fins, said boot being extended forward by a flexible wing, it is that is to say that this wing is fixed to the front of the liner, the fixing of the wing with the boot can be achieved by any known means such as for example by overmolding the flexible wing in the front of the boot. According to the invention, the fin comprises at least one flexible element comprising at least two branches extending in the lengthwise direction under the flexible wing and a base, securing means being arranged between the base of this flexible element and the proximal portion of the flexible wing, that is to say that located near the front end of the liner.

On comprend que selon l'invention, seule la partie proximale de l'élément flexible disposée sous la voilure flexible est fixée avec la partie proximale de ladite voilure flexible tandis que la partie complémentaire de cet élément flexible, s'étendant sous la voilure dans le sens de sa longueur, reste libre vis-à-vis de ladite voilure flexible. Ainsi, l'élément flexible agit comme un raidisseur, celui-ci étant en action lors d'un mouvement de descente de la palme tandis qu'il n'est pas sollicité lors d'un mouvement de montée. En effet, du fait de la position de l'élément flexible sous la voilure flexible, lorsque le nageur effectue un mouvement de descente, la voilure prend appui sur l'élément flexible, ce qui augmente la raideur de la voilure.It is understood that according to the invention, only the proximal portion of the flexible element disposed under the flexible wing is fixed with the proximal portion of said flexible wing while the complementary portion of this flexible member, extending under the wing in the direction of its length, remains free vis-à-vis said flexible wing. Thus, the flexible element acts as a stiffener, the latter being in action during a downward movement of the palm while it is not stressed during a climbing movement. Indeed, because of the position of the flexible element under the flexible wing, when the swimmer performs a downward movement, the wing is supported on the flexible element, which increases the stiffness of the wing.

Au contraire, lors du mouvement de montée, la voilure flexible fléchit indépendamment de l'élément flexible, sa raideur n'étant pas augmentée. Ainsi, la voilure flexible fléchit de manière dissymétrique, la palme opposant un effort plus important lors d'un mouvement de descente que lors d'un mouvement de montée, ce qui permet d'optimiser l'exploitation de la puissance des jambes durant le battement des pieds ou d'utiliser la palme comme outil de musculation afin de faire travailler différemment les groupes musculaires des jambes.On the contrary, during the uphill movement, the flexible wing flexes independently of the flexible member, its stiffness is not increased. Thus, the flexible wing flexes asymmetrically, the palm opposing a greater effort during a downward movement than during a climbing movement, which optimizes the exploitation of the power of the legs during the beat feet or using the palm as a weight training tool to make the muscular groups of the legs work differently.

En outre, la conception de la palme objet de l'invention est simplifiée en comparaison de celle décrite dans le document D- 43.38610 .In addition, the design of the palm object of the invention is simplified in comparison with that described in document D- 43.38610 .

Selon l'invention, les moyens d'assujettissement consistent en un système de fixation amovible, ce qui présente pour intérêt de pouvoir remplacer les éléments flexibles par exemple en cas de détérioration de ceux-ci voire pour modifier la raideur desdits éléments flexibles et ainsi, de faire varier le fléchissement dissymétrique par exemple en fonction de l'utilisateur. Bien entendu, ces moyens d'assujettissement peuvent consister en un système de fixation traditionnel, c'est-à-dire non amovible, sans sortir du cadre de la présente invention, un tel système de fixation pouvant dans ce cas et par exemple, être mis en oeuvre par surmoulage de la partie proximale de la voilure sur la partie proximale du ou des éléments flexibles.According to the invention, the securing means consist of a removable fastening system, which has the advantage of being able to replace the flexible elements, for example in case of deterioration thereof or to modify the stiffness of said flexible elements and thus, to vary the asymmetrical sag, for example depending on the user. Of course, these securing means may consist of a traditional fastening system, that is to say non-removable, without departing from the scope of the present invention, such a fastening system can in this case and for example be implemented by overmolding the proximal portion of the wing on the proximal portion of the flexible elements.

De manière préférentielle, la partie proximale de la voilure flexible comprend au moins un orifice et la partie proximale de l'élément flexible comprend au moins une tête de fixation passant au travers dudit orifice sur la voilure flexible. En outre, au moins une pièce d'attache amovible coopère avec ladite au moins une tête de fixation en sorte de prendre en sandwich la voilure flexible entre l'élément flexible et la au moins une pièce d'attache. Bien entendu, d'autres systèmes de fixation amovibles sont envisageables sans sortir du cadre de la présente invention.Preferably, the proximal part of the flexible wing comprises at least one orifice and the proximal portion of the flexible element comprises at least one fixing head passing through said orifice on the flexible wing. In addition, at least one removable attachment piece cooperates with said at least one fixing head so as to sandwich the flexible wing between the flexible element and the at least one attachment piece. Of course, other removable fastening systems are possible without departing from the scope of the present invention.

Selon un mode préférentiel et non limitatif, la au moins une tête de fixation comprend une fente longitudinale et à son extrémité, un rebord s'étendant vers l'extérieur de la périphérie de ladite tête de fixation. En outre, la pièce d'attache présente au moins un orifice au travers duquel est apte à passer le rebord lorsque la fente longitudinale de la tête de fixation est comprimée. Par ailleurs, la au moins une tête de fixation a une longueur correspondant à l'épaisseur totale de la voilure flexible, dans sa partie proximale où sont disposés les moyens d'assujettissement, et de la pièce d'attache.According to a preferred and non-limiting mode, the at least one attachment head comprises a longitudinal slot and at its end, a flange extending outwardly from the periphery of said fixing head. In addition, the attachment piece has at least one orifice through which is able to pass the flange when the longitudinal slot of the fixing head is compressed. Furthermore, the at least one fixing head has a length corresponding to the total thickness of the flexible wing, in its proximal portion where the securing means and the attachment piece are arranged.

De manière préférentielle et non limitative, les deux branches s'étendent respectivement à proximité des bords latéraux de la voilure flexible. Bien entendu, on pourrait prévoir un élément flexible comprenant un nombre de branches plus important, par exemple, trois branches, deux des branches étant disposées à proximité des bords latéraux de la voilure flexible et la troisième disposée en partie centrale de ladite voilure flexible. En outre, on peut également envisager que ces branches soient toutes reliées entre elles au moyen d'une base unique voire que chacune desdites branches disposent d'une base individuelle constituant la partie proximale de l'élément flexible, assujettie à la partie proximale de la voilure flexible.Preferably, and not limiting, the two branches extend respectively close to the lateral edges of the flexible wing. Of course, there could be a flexible element comprising a larger number of branches, for example, three branches, two of the branches being disposed near the lateral edges of the flexible wing and the third disposed in the central portion of said flexible wing. In addition, it is also conceivable that these branches are all interconnected by means of a single base or that each of said branches have an individual base constituting the proximal portion of the flexible element, subject to the proximal portion of the flexible wing.

De manière préférentielle, les branches longitudinales sont reliées entre elles par une base unique comprenant trois têtes de fixation uniformément réparties vis-à-vis de la partie proximale de la voilure. En outre, la pièce d'attache et la voilure flexible comprennent chacune trois orifices répartis uniformément, de manière identique aux trois têtes de fixation sur la base.Preferably, the longitudinal branches are interconnected by a single base comprising three fastening heads uniformly distributed vis-à-vis the proximal portion of the wing. In addition, the attachment piece and the flexible wing each comprise three orifices distributed uniformly, identically to the three fastening heads on the base.

De manière préférentielle et non limitative, les moyens d'assujettissement sont disposés dans le premier quart de la voilure flexible.Preferably and without limitation, the securing means are disposed in the first quarter of the flexible wing.

De manière préférentielle et non limitative, l'élément flexible et notamment les branches flexibles, s'étendent sur une longueur correspondant aux trois quart de la longueur de la voilure flexible.In a preferential and nonlimiting manner, the flexible element and in particular the flexible branches extend over a length corresponding to three quarters of the length of the flexible wing.

De manière préférentielle, l'élément flexible disposé sur la voilure flexible présente une rigidité supérieure à celle de ladite voilure flexible.Preferably, the flexible element disposed on the flexible wing has a rigidity greater than that of said flexible wing.

Selon un mode de conception de la palme objet de la présente invention, outre les caractéristiques précitées, celle-ci comprend un dispositif de fixation amovible qui est agencé entre le chausson et la voilure flexible. Cela a pour avantage de rendre amovible le chausson vis-à-vis de la voilure flexible notamment dans le but d'adapter le chausson en fonction du pied de l'utilisateur.According to a mode of design of the palm object of the present invention, in addition to the aforementioned characteristics, it comprises a removable fastening device which is arranged between the boot and the flexible wing. This has the advantage of making the liner removable from the flexible sails especially in order to adapt the boot according to the foot of the user.

Selon ce mode de conception, le chausson comprend une platine rigide et un élément chaussant souple qui est disposé au dessus de la platine rigide. Cette platine rigide et cet élément chaussant souple sont assujettis entre eux. La voilure flexible comprend une partie voilure flexible prolongée vers l'arrière par une partie d'appui rigide. En outre, des moyens d'encliquetage sont agencés entre la partie d'appui et la platine rigide.According to this embodiment, the boot comprises a rigid plate and a flexible footwear element which is disposed above the rigid plate. This rigid plate and this soft footwear element are secured to each other. The flexible wing comprises a flexible wing portion extended rearwardly by a rigid support portion. In addition, latching means are arranged between the support portion and the rigid plate.

Selon ce mode de conception de la palme, la platine rigide et l'élément chaussant souple sont indépendants l'un de l'autre, des moyens d'assemblage étant agencés entre la platine rigide et l'élément chaussant souple. Cela présente pour avantage de conserver la platine rigide et d'adapter uniquement l'élément chaussant souple en fonction du pied de l'utilisateur. On pourrait toutefois envisager que la platine rigide et l'élément chaussant souple soient constitués en un seul et même élément indissociable, la platine rigide étant par exemple surmoulée sur l'élément chaussant.According to this mode of design of the palm, the rigid plate and the flexible footwear are independent of each other, assembly means being arranged between the rigid plate and the flexible footwear element. This has the advantage of retaining the rigid plate and to adapt only the soft footwear according to the foot of the user. However, it could be envisaged that the rigid plate and the flexible footwear are made of one and the same indissociable element, the rigid plate being for example overmolded on the footwear element.

Selon ce mode de conception de la palme, la partie d'appui rigide de la voilure flexible comprend un bord central proximal, disposé transversalement sur la voilure flexible, et deux branches d'appui s'étendant longitudinalement vers l'arrière par rapport aux côtés latéraux du bord central proximal. En outre, les moyens d'encliquetage sont agencés entre le bord central proximal de la partie d'appui et le bord avant de la platine rigide et entre les extrémités distales des deux branches d'appui de ladite partie d'appui rigide et les deux extrémités latérales arrière de la platine rigide.According to this design mode of the palm, the rigid bearing portion of the flexible wing comprises a proximal central edge, disposed transversely on the flexible wing, and two bearing branches extending longitudinally rearwardly relative to the sides lateral of the proximal central edge. In addition, the latching means are arranged between the proximal central edge of the bearing portion and the front edge of the rigid plate and between the distal ends of the two bearing branches of said rigid bearing portion and the two rear side ends of the rigid plate.

Les caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description suivante d'un mode préférentiel de conception, lequel s'appuie sur des figures parmi lesquelles :

  • la figure 1 illustre en vue de plan la palme objet de l'invention, le coté gauche par rapport à l'axe de symétrie illustrant le dessus de la palme tandis que le coté droit illustre le dessous de cette palme ;
  • la figure 2 illustre une vue de coté en coupe selon l'axe de symétrie de la palme ;
  • la figure 3 illustre un battement de pieds avec les palmes objet de la présente invention montrant l'action de l'élément flexible disposé sous la voilure, agissant en tant que raidisseur ;
  • les figures 4a,4b,4c,4d illustrent une variante de conception de la palme selon laquelle le chausson est amovible de la voilure flexible. Sur ces figures 4a,4b,4c,4d, ne sont pas représentés les caractéristiques essentielles, objet de la présente invention, à savoir l'élément flexible et les moyens d'assujettissement de cet élément flexible. On pourra toutefois mettre en oeuvre l'élément flexible et les moyens d'assujettissement de cet élément flexible avec la voilure flexible tel que cela est illustré sur les figures 1 à 3 et décrit ci-après.
The features and advantages of the present invention will appear on reading the following description of a preferred embodiment of design, which relies on figures among which:
  • the figure 1 illustrates in plan view the palm object of the invention, the left side relative to the axis of symmetry illustrating the top of the palm while the right side illustrates the bottom of this palm;
  • the figure 2 illustrates a side view in section along the axis of symmetry of the palm;
  • the figure 3 illustrates a flapping of the feet with the fins object of the present invention showing the action of the flexible element disposed under the wing, acting as a stiffener;
  • the Figures 4a, 4b, 4c, 4d illustrate a variant of the design of the palm that the boot is removable from the flexible wing. On these Figures 4a, 4b, 4c, 4d The essential features of the present invention, namely the flexible element and the securing means of this flexible element, are not shown. However, it will be possible to implement the flexible element and the securing means of this flexible element with the flexible wing as shown in the drawings. Figures 1 to 3 and described below.

On constate que la palme 1 comprend de manière traditionnelle, un chausson 2 et une voilure 3. Sur les figures 1 à 3, le chausson 2 est fermé, c'est-à-dire qu'il entoure complètement le pied. On peut toutefois envisager la mise en oeuvre de la présente invention sur un chausson ouvert au niveau de son extrémité arrière, laquelle comprend, dans ce cas, une sangle prenant appui sur le talon du pied.It can be seen that palm 1 comprises in a traditional manner, a slipper 2 and a sail 3. On the Figures 1 to 3 , the shoe 2 is closed, that is to say, it completely surrounds the foot. However, it is possible to envisage the implementation of the present invention on an open liner at its rear end, which comprises, in this case, a strap bearing on the heel of the foot.

La voilure flexible 3 est assujettie à l'avant du chausson, tel que cela est illustré notamment sur les figures 1 et 2. Par exemple, l'extrémité proximale de la voilure est surmoulée sur le chausson. Cette voilure flexible 3 est capable de fléchir lors des mouvements de descente et de montée de la palme durant les battements de pieds, tel que cela est illustré sur la figure 3.The flexible wing 3 is secured to the front of the liner, as is illustrated in particular on the Figures 1 and 2 . For example, the proximal end of the blade is overmolded on the shoe. This flexible wing 3 is capable of flexing during the movements of descent and rise of the palm during the foot beats, as illustrated in FIG. figure 3 .

On constate sur ces figures 1 à 3 que la palme 1 comprend un élément flexible 4 qui est disposé en dessous de la voilure 3. Cet élément flexible 4 comprend de manière préférentielle, deux branches 14,15 flexibles qui s'étendent longitudinalement jusqu'aux trois quarts de la longueur de la voilure, à proximité des bords latéraux 17,18 de ladite voilure 3, tel qu'illustré sur la figure 1. En outre, ces branches flexibles 14,15 sont reliées entre elles par une base 16 qui présente de préférence une forme incurvée épousant le contour avant du chausson 2. Cette base 16 constituant la partie proximale 6 de l'élément flexible 4, est assujettie à la partie proximale de la voilure 3 par des moyens d'assujettissement 5, tel qu'illustré sur les figures 1 et 2. Pour cela, un système de fixation 5 est agencé entre la base 16 et la partie proximale 7 de la voilure.We see on these Figures 1 to 3 that the palm 1 comprises a flexible element 4 which is arranged below the wing 3. This flexible element 4 preferably comprises two flexible branches 14, 15 which extend longitudinally up to three quarters of the length of the wing. , close to the lateral edges 17, 18 of said wing 3, as illustrated in FIG. figure 1 . In addition, these flexible branches 14,15 are interconnected by a base 16 which preferably has a curved shape conforming to the contour 2 This base 16 constituting the proximal portion 6 of the flexible element 4, is secured to the proximal portion of the wing 3 by securing means 5, as shown in FIGS. Figures 1 and 2 . For this, a fastening system 5 is arranged between the base 16 and the proximal portion 7 of the wing.

De manière préférentielle, ce système de fixation est constitué, d'une part, par des têtes de fixation 9, tel qu'illustré en figure 2. La tête de fixation passe au travers d'un orifice 8 agencé sur la partie proximale 7 de la voilure 3. D'autre part, une pièce d'attache 10 comprend également un orifice 13 au travers duquel est capable de passer la tête de fixation 9. On constate que la tête de fixation comprend une fente longitudinale 11 illustrée en figure 2 et un rebord 12 s'étendant vers l'extérieur à l'extrémité de ladite tête de fixation 9. Lorsque la fente longitudinale 11 est comprimée, le rebord 12 présente un diamètre inférieur à ceux des orifices 8 et 13, respectivement sur la voilure 3 et la pièce d'attache 10. Ainsi, la tête de fixation 9 passe au travers de l'orifice 8 sur la voilure puis au travers de l'orifice 13 de la pièce d'attache 10, en conservant la fente longitudinale 11 comprimée. Une fois cette fente longitudinale 11 relâchée, le rebord 12 reprend son diamètre normal supérieur au diamètre des orifices 8 et 13 respectivement sur la voilure 3 et sur la pièce d'attache 10, ce qui permet de maintenir la pièce d'attache 10 en position, coincée par le rebord 12 et ainsi de prendre en sandwich la voilure 3 entre la base 16 et ladite pièce d'attache 10.Preferably, this fastening system is constituted, on the one hand, by fixing heads 9, as illustrated in FIG. figure 2 . The fixing head passes through an orifice 8 arranged on the proximal portion 7 of the blade 3. On the other hand, a fastening piece 10 also comprises an orifice 13 through which the fastening head is able to pass. 9. It can be seen that the fixing head comprises a longitudinal slot 11 illustrated in FIG. figure 2 and a flange 12 extending outwardly at the end of said fastener head 9. When the longitudinal slot 11 is compressed, the flange 12 has a smaller diameter than those of the orifices 8 and 13, respectively on the wing 3 and the attachment piece 10. Thus, the attachment head 9 passes through the orifice 8 on the wing and then through the orifice 13 of the attachment piece 10, keeping the longitudinal slot 11 compressed. Once this longitudinal slot 11 is released, the rim 12 resumes its normal diameter greater than the diameter of the orifices 8 and 13 respectively on the wing 3 and on the attachment piece 10, which makes it possible to hold the attachment piece 10 in position , wedged by the rim 12 and thus to sandwich the wing 3 between the base 16 and said attachment piece 10.

Tel qu'illustré sur la figure 2, la longueur de la tête de fixation 9 correspond plus ou moins à l'épaisseur totale de la voilure 3 dans sa partie proximale 17 et de la pièce d'attache 10, ce qui assure un assujettissement convenable entre la base 16, la voilure 3 et la pièce d'attache 10 coincée par le rebord 12. On constate sur la figure 1 que trois têtes de fixation 9 sont agencées sur la base 16, lesdites têtes de fixation étant uniformément réparties vis-à-vis de la partie proximale 17 de la voilure 3. Cette voilure 3 dispose en conséquence dans sa partie proximale de trois orifices 8 répartis de manière identique à la position des têtes de fixation 9. En outre, tel qu'illustré sur la figure 1, on distingue que la pièce d'attache 10 comprend des formes et dimensions correspondant plus ou moins à celles de la base 16 de l'élément flexible 4, cette pièce d'attache 10 comprenant en outre trois orifices 13 répartis uniformément de manière identique aux orifices 8 de la voilure 3 et à la position des trois têtes de fixation 9 sur la base 16. Il serait toutefois envisageable de prévoir trois pièces d'attache séparées pour chacune des têtes de fixation 9 sur la base 16. En outre, il est bien entendu possible de prévoir un nombre différent de têtes de fixation sur la base 16. Il serait en outre possible de prévoir des branches 14,15 individuelles, c'est-à-dire non reliées par une base 16 unique, des moyens d'assujettissement étant mis en oeuvre directement en partie proximale desdites branches et en partie proximale 7 de la voilure 3.As illustrated on the figure 2 , the length of the fastening head 9 corresponds more or less to the total thickness of the wing 3 in its proximal portion 17 and the attachment piece 10, which ensures a proper fastening between the base 16, the wing 3 and the fastening piece 10 wedged by the flange 12. It can be seen on the figure 1 3 fixing heads 9 are arranged on the base 16, said fixing heads being uniformly distributed vis-à-vis the proximal portion 17 of the wing 3. This wing 3 has accordingly in its proximal portion of three holes 8 distributed identical to the position of the fastening heads 9. In addition, as illustrated on the figure 1 it is distinguished that the attachment piece 10 comprises shapes and dimensions corresponding more or less to those of the base 16 of the flexible element 4, this attachment piece 10 further comprising three orifices 13 uniformly distributed identically to the 8 of the canals 3 and the position of the three attachment heads 9 on the base 16. It would however be possible to provide three separate attachment pieces for each of the attachment heads 9 on the base 16. In addition, it is of course possible to provide a different number of fixing heads on the base 16. It would also be possible to provide individual branches 14,15, that is to say not connected by a single base 16, means of subjection being implemented directly at the proximal portion of said branches and at the proximal portion 7 of the wing 3.

De manière préférentielle, tel qu'illustré sur la figure 1, l'assujettissement entre la base 16 de l'élément flexible 4 et la partie proximale 7 de la voilure 3 est disposée dans le premier quart de ladite voilure 3, tandis que les branches 14 et 15 de l'élément flexible 4 s'étendent sur une longueur correspondant plus ou moins au trois quart de la voilure flexible 3, sur ses bords latéraux 17,18.Preferably, as illustrated on the figure 1 , the securing between the base 16 of the flexible element 4 and the proximal portion 7 of the wing 3 is disposed in the first quarter of said wing 3, while the branches 14 and 15 of the flexible element 4 extend over a length corresponding more or less to three quarters of the flexible wing 3, on its lateral edges 17,18.

De manière préférentielle, ces branches flexibles disposent d'une raideur supérieure à celle de la voilure 3. Cela n'est toutefois pas limitatif puisqu'il est possible, de part le caractère amovible de la pièce d'attache 10, de remplacer l'élément flexible 4 par un autre présentant une raideur différente, plus ou moins importante, éventuellement inférieure à la raideur de la voilure.Preferably, these flexible branches have a stiffness greater than that of the wing 3. This is however not limiting since it is possible, because of the removable nature of the attachment piece 10, to replace the flexible element 4 by another having a different stiffness, more or less important, possibly lower than the stiffness of the wing.

Ainsi, tel qu'on peut le constater sur la figure 3, lors d'un mouvement de descente de la palme 1, la face inférieure, c'est-à-dire le dessous de la voilure 3, prend appui sur les branches 14,15 de l'élément flexible 4, tandis que lors d'un mouvement de montée de la palme, du fait que les branches 14,15 sont libres vis-à-vis du dessous de la voilure 3, ladite voilure 3 fléchit différemment et indépendamment des branches flexibles 14,15 de l'élément flexible 4. Cela assure un fléchissement dissymétrique de la voilure 3 durant les battements de pieds.Thus, as can be seen from the figure 3 during a downward movement of the fin 1, the lower face, that is to say the underside of the blade 3, is supported on the branches 14,15 of the flexible element 4, while at an upward movement of the palm, because the branches 14, 15 are free from the underside of the wing 3, said wing 3 flexes differently and independently of the flexible branches 14, 15 of the flexible element 4 This ensures an asymmetrical deflection of the wing 3 during the footfalls.

Les figures 4a à 4d illustrent une variante de conception de la palme qui reprend toutes les caractéristiques précitées de la description quant au mode de réalisation de l'élément flexible 4 illustré aux figures 1 à 3.The Figures 4a to 4d illustrate a variant of the design of the palm which incorporates all the aforementioned characteristics of the description as to the embodiment of the flexible element 4 illustrated in FIGS. Figures 1 to 3 .

Selon cette palme 100 illustrée aux figures 4a à 4d, le chausson 200 est amovible de la voilure 300. On constate que le chausson 200 comprend une platine 201 qui est réalisée dans un matériau rigide, et un élément chaussant 202 qui est réalisé dans un matériau souple. On constate également sur ces figures 4a à 4d que l'élément chaussant 202 est indépendant de la platine rigide 201, Cet élément chaussant 202 est fixé au dessus de la platine rigide 201 au moyen de sangles d'attache 203,204. On pourrait toutefois envisager que cette platine rigide 201 et cet élément chaussant 202 soient réalisés en une seule et même pièce, par exemple en surmoulant la matière de la platine rigide sur la matière de l'élément chaussant souple.According to this palm 100 illustrated in Figures 4a to 4d , the boot 200 is removable from the wing 300. It is noted that the shoe 200 comprises a plate 201 which is made of a rigid material, and a footwear element 202 which is made of a flexible material. We also see on these Figures 4a to 4d that the footwear element 202 is independent of the rigid plate 201. This footwear element 202 is fixed above the rigid plate 201 by means of tether straps 203, 204. It could however be envisaged that this rigid plate 201 and this footwear element 202 are made in one and the same piece, for example by overmolding the material of the rigid plate on the material of the flexible footwear element.

On constate sur les figures 4a à 4d que la voilure flexible 300 comprend une partie voilure flexible 301 et une partie d'appui 302, plus rigide que la partie voilure 301. Cette partie d'appui 302 comprend un bord central proximal 303 disposé transversalement sur la voilure 300 et deux branches d'appui 304,305 qui s'étendent longitudinalement vers l'arrière de la voilure flexible et sont disposées sur les côtés latéraux par rapport au bord central proximal 303. On constate en outre sur la figure 4d que les extrémités 306,307 de ces branches d'appui 304,305 sont reliées entre elles par un élément de liaison transversal 308. On constate sur les figures 4a,4d que le bord central proximal 303 comprend une patte d'engagement 309. De même, les extrémités 306,307 des deux branches d'appui 304,305 comprennent chacune des pattes d'enclenchement 310,311. Ces pattes d'enclenchement 310,311 des branches d'appui 304,305 sont configurées pour disposer d'une flexibilité permettant une légère déformation de celle-ci en sorte de permettre l'enclenchement du chausson 200. A cet effet, la platine rigide 201 du chausson 200 comprend au niveau de son bord avant une encoche 205, tel qu'illustré sur la figure 4d. On constate également sur la figure 4d que la première extrémité latérale arrière de la platine 201 comprend une encoche 206. Une telle encoche est également prévue sur la seconde extrémité latérale arrière de la platine 201.We see on Figures 4a to 4d that the flexible wing 300 comprises a flexible wing portion 301 and a bearing portion 302, more rigid than the wing portion 301. This bearing portion 302 comprises a proximal central edge 303 disposed transversely on the wing 300 and two branches of 304,305 which extend longitudinally towards the rear of the flexible wing and are arranged on the lateral sides with respect to the proximal central edge 303. figure 4d that the ends 306, 307 of these support branches 304, 305 are interconnected by a transverse connecting element 308. Figures 4a, 4d that the proximal central edge 303 comprises an engagement tab 309. Similarly, the ends 306, 307 of the two support branches 304, 305 each comprise interlocking tabs 310, 31. These interlocking tabs 310,311 of the support legs 304,305 are configured to have a flexibility allowing a slight deformation thereof so as to allow the engagement of the shoe 200. For this purpose, the rigid plate 201 of the shoe 200 comprises at its front edge a notch 205, as illustrated on the figure 4d . We also see on the figure 4d that the first rear side end of the plate 201 comprises a notch 206. Such a notch is also provided on the second rear lateral end of the plate 201.

Le positionnement du chausson 200 sur la voilure flexible 300 s'effectue en positionnant l'encoche 205 au niveau du bord avant de la platine rigide 201 dans la patte d'enclenchement 309 puis en enfonçant l'extrémité arrière de la platine 201, ce qui permet un déplacement des pattes d'enclenchement 310,311 au niveau des extrémités 306,307 des deux branches d'appui 304,305 selon le sens des flèches 401,402 illustré en figure 4d, jusqu'à ce que lesdites pattes d'enclenchement 310,311 s'encliquètent sur les encoches 206 disposées aux extrémités latérales arrière de la platine rigide 201.The positioning of the boot 200 on the flexible wing 300 is performed by positioning the notch 205 at the front edge of the rigid plate 201 in the locking tab 309 and then pressing the rear end of the plate 201, which allows a movement of the locking tabs 310, 311 at the ends 306, 307 of the two support branches 304, 305 in the direction of the arrows 401, 402 illustrated in FIG. figure 4d , until said engagement tabs 310,311 snap onto the notches 206 disposed at the rearward lateral ends of the rigid plate 201.

Cette déformation des pattes d'enclenchement 310,311 permet donc d'enclencher lesdites pattes d'enclenchement dans les encoches 206 au niveau des extrémités latérales arrière de la platine 201. Le chausson est alors enclenché tel qu'illustré en figure 4a. Le retrait du chausson 200 vis-à-vis de la voilure flexible 300 s'effectue selon les étapes illustrées au travers des figures 4a à 4d, c'est-à-dire en saisissant les pattes d'enclenchement 310,311 au niveau des extrémités 306,307 des branches d'appui 304,305 et en les déplaçant selon les flèches 401,402 puis en tirant vers l'arrière selon la flèche 403 le chausson 200 en sorte de dégager l'encoche 205 au niveau du bord avant de la platine rigide 201 vis-à-vis de la patte d'encoche 309 sur le bord central proximal 303 de la partie d'appui 302.This deformation of the interlocking tabs 310, 3111 therefore makes it possible to engage said locking tabs in the notches 206 at the rear lateral ends of the plate 201. The boot is then engaged as illustrated in FIG. figure 4a . The removal of the boot 200 vis-à-vis the flexible wing 300 is performed according to the steps illustrated through the Figures 4a to 4d , that is to say by grasping the interlocking tabs 310, 311 at the ends 306, 307 of the support branches 304, 305 and moving them according to the arrows 401, 402 and then pulling backwards according to the arrow 403 the shoe 200 in so as to disengage the notch 205 at the front edge of the rigid plate 201 vis-à-vis the notch tab 309 on the proximal central edge 303 of the bearing portion 302.

L'élément transversal 308 permet avantageusement d'assurer une rigidité suffisante de la partie d'appui 302 en sorte d'éviter que les branches d'appui 304,305 ne s'écartent durant l'utilisation de la palme, ce qui garantit un enclenchement convenable du chausson 200 sur la voilure flexible 300. Cet élément transversal 308 contribue en outre à la transmission de l'effort durant la pratique de la nage.The transverse element 308 advantageously makes it possible to ensure sufficient rigidity of the bearing portion 302 so as to prevent the support legs 304, 305 from diverging during the use of the fin, thereby ensuring proper engagement. slipper 200 on the flexible wing 300. This transverse element 308 also contributes to the transmission of effort during the practice of swimming.

D'autres caractéristiques peuvent être envisagées sans sortir du cadre de la présente invention, notamment en ce qui concerne la mise en oeuvre des moyens d'assujettissement 5 entre l'élément flexible 4 et la voilure 3.Other features may be envisaged without departing from the scope of the present invention, in particular as regards the implementation of the securing means 5 between the flexible element 4 and the wing 3.

Claims (12)

  1. A flipper (1, 100) comprising especially a bootee (2, 200) extended to the front by a flexible wing section (3, 300), said flexible wing section (3, 300) having a proximal part (7) corresponding to the part of the flexible wing section located near the front end of the bootee (2, 200), the flipper further comprising a flexible element (4) comprising at least two branches (14, 15) extending in the direction of the length under the flexible wing section (3) and a base (16), securing means (5) being arranged between the base (16) and the proximal part (7) of the flexible wing section (3, 300) so that only the base (16) is secured to the proximal part (7) whereas said at least two branches (14, 15) remain movable relative to the flexible wing section (3, 300), said flipper being characterized in that the securing means (5) consist in a removable attachment system comprising at least one orifice (8) formed in the proximal part (7) of the flexible wing section, at least one attachment head (9) formed on the base (16) and passing through said orifice, and at least one removable attachment piece (10) cooperating with said at least one attachment head such that the flexible wing section is sandwiched between the base (16) and the at least one attachment piece (10).
  2. The flipper (1, 100) according to Claim 1, said at least one attachment head (9) comprising a longitudinal slot (11) and at its end a rim (12), the attachment piece (10) having at least one orifice (13) through which the rim is able to pass when the longitudinal slot of the attachment head is compressed, said at least one attachment head having a length corresponding to the total thickness of the flexible wing section (3, 300), in its proximal part (7), and of the attachment piece.
  3. The flipper (1, 100) according to Claim 1 or 2, the two branches (14, 15) extending respectively near the lateral edges (17, 18) of the flexible wing section (3, 300).
  4. The flipper (1, 100) according to any one of Claims 1 to 3, the attachment piece (10) comprising a form and dimensions corresponding substantially to those of the base (16).
  5. The flipper (1, 100) according to Claim 4, the base (16) comprising three attachment heads (9) distributed uniformly and the attachment piece (10) and the flexible wing section (3, 300) each comprising three orifices (8, 13) distributed identically to said three attachment heads.
  6. The flipper (1, 100) according to any one of Claims 1 to 5, the securing means (5) being placed in the first quarter of the flexible wing section (3, 300).
  7. The flipper (1, 100) according to any one of Claims 1 to 6, the branches (14, 15) of the flexible element (4) extending over a length corresponding to three quarters of the flexible wing section (3, 300).
  8. The flipper (1, 100) according to any one of Claims 1 to 7, the flexible element (4) having rigidity greater than that of the flexible wing section (3, 300).
  9. The flipper (100) according to any one of Claims 1 to 8, in which a removable attachment device (205, 206, 309, 310, 311) is arranged between the bootee (1) and the flexible wing section (3).
  10. The flipper (100) according to Claim 9, the bootee (200) comprising a rigid fixture (201) and a supple bootee element (202), placed above the rigid fixture, said elements (201, 202) being secured together, the flexible wing section (300) comprising a flexible wing section (301) extended to the rear by a rigid support part (302), locking means being arranged between the support part and the rigid fixture.
  11. The flipper (100) according to Claim 10, the rigid fixture (201) and the supple bootee element (202) being independent of each other, assembly means (203, 204) being arranged between the rigid fixture and the supple bootee element.
  12. The flipper (100) according to Claim 10 or 11, the rigid support part (302) comprising a proximal central edge (303) and support branches (304, 305) extending longitudinally to the rear relative to the lateral sides of said proximal central edge, the locking means (205, 206, 309, 310, 311) being arranged between the proximal central edge (303) of the support part (302) and the front edge of the rigid fixture (201) and between the distal ends (306, 307) of the support branches (304, 305) of the support part (302) and the rear lateral ends of the rigid fixture (201).
EP10191157.6A 2009-11-18 2010-11-15 Flipper provided with an asymmetrically bending blade Not-in-force EP2324889B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0958130A FR2952545B1 (en) 2009-11-18 2009-11-18 PALM EQUIPPED WITH A DISSYMMETRIC FLEXION BOAT

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EP2324889A1 EP2324889A1 (en) 2011-05-25
EP2324889B1 true EP2324889B1 (en) 2016-03-16

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EP10191157.6A Not-in-force EP2324889B1 (en) 2009-11-18 2010-11-15 Flipper provided with an asymmetrically bending blade

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US7845537B2 (en) 2006-01-31 2010-12-07 Ethicon Endo-Surgery, Inc. Surgical instrument having recording capabilities
ES2719923B2 (en) * 2018-01-16 2020-07-03 Swimtonic Tech S L Variable geometry fins for training
CN108744435B (en) * 2018-08-02 2024-03-15 朱光 Pressure regulating valve and application of adjustable rigidity foot fin and adjustable rigidity bionic tail fin

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FR1361410A (en) * 1963-04-03 1964-05-22 Swimming shoe
US4007506A (en) * 1975-12-18 1977-02-15 Rasmussen Philip A Swim fin
FR2455905A1 (en) * 1979-05-09 1980-12-05 Beuchat Georges Variable curve swimming flipper - has axial rib to limit curvature with v-shaped notches along its length
FR2611509A1 (en) * 1986-12-05 1988-09-09 Petit Jean Christophe Compact flipper device
IT1256836B (en) * 1992-06-03 1995-12-21 Technisub Spa SWIMMING FIN.
DE4338610C2 (en) * 1993-11-11 1999-07-15 Rosenow Gottfried Swimfin (multi-blade counter-flapping fin)
JP3288967B2 (en) * 1998-03-09 2002-06-04 株式会社タバタ Swim flippers
TW420619B (en) * 1998-11-04 2001-02-01 Htm Sport Spa Swimming flipper
IT1314501B1 (en) * 2000-02-25 2002-12-18 Htm Sport Spa SWIMMING FIN.
US6394863B1 (en) * 2000-10-11 2002-05-28 Chien-Rung Chen Fin with movable flap
JP3771489B2 (en) * 2001-12-20 2006-04-26 株式会社タバタ Flippers with buckle
ITGE20070093A1 (en) * 2007-09-28 2009-03-29 Mares Spa FIN FOR SWIMMING
CN201235180Y (en) * 2008-07-25 2009-05-13 徐前呈 Novel flipper

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CN102107072A (en) 2011-06-29
CN102107072B (en) 2013-11-06
ES2575694T3 (en) 2016-06-30
FR2952545A1 (en) 2011-05-20
FR2952545B1 (en) 2012-08-03
PL2324889T3 (en) 2016-09-30
EP2324889A1 (en) 2011-05-25
AU2010241489B2 (en) 2013-02-07
US20110117801A1 (en) 2011-05-19
US8936499B2 (en) 2015-01-20
AU2010241489A1 (en) 2011-06-02
PT2324889E (en) 2016-06-15

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