EP1201271A1 - Racket frame - Google Patents

Racket frame Download PDF

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Publication number
EP1201271A1
EP1201271A1 EP01420206A EP01420206A EP1201271A1 EP 1201271 A1 EP1201271 A1 EP 1201271A1 EP 01420206 A EP01420206 A EP 01420206A EP 01420206 A EP01420206 A EP 01420206A EP 1201271 A1 EP1201271 A1 EP 1201271A1
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EP
European Patent Office
Prior art keywords
frame according
intermediate portion
frame
racket
reinforcing means
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.)
Withdrawn
Application number
EP01420206A
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German (de)
French (fr)
Inventor
Marc Poggi
Yann Bernard
Yvan Le Bozec
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Babolat VS SA
Original Assignee
Babolat VS SA
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Filing date
Publication date
Application filed by Babolat VS SA filed Critical Babolat VS SA
Publication of EP1201271A1 publication Critical patent/EP1201271A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/03—Frames characterised by throat sections, i.e. sections or elements between the head and the shaft
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/10—Frames made of non-metallic materials, other than wood
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/14—Protection devices on the frame
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B2049/0211—Frames with variable thickness of the head in a direction perpendicular to the string plane
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres

Definitions

  • the present invention relates to a racket frame, a racket provided with such a frame, as well as a set of several of these frames.
  • the invention relates more particularly to a racket provided a sieve, such as a tennis racket, badminton racket or squash.
  • the two tubes interiors are arranged side by side, so that their adjacent walls form a transverse rib, intended reinforce the frame, while the presence of the outer tube reduces stresses that may occur at this rib.
  • the invention proposes to produce a racket frame constituting an alternative to the prior art presented above.
  • a racket frame including tennis, squash or badminton, including a tubular body, characterized in that said tubular body has at least one intermediate portion in the vicinity of which are provided with reinforcing means, these means reinforcement defining, with this intermediate portion, a spacer volume extending over the entire periphery outside of said intermediate portion.
  • the invention also relates to a racket, including tennis, squash or badminton, including a frame with a sieve and a rope stretched around of this sieve, characterized in that this frame is as defined above.
  • the invention finally relates to a set of frames, comprising several types of frames as defined above.
  • the racket illustrated in Figure 1 which is designated as a whole by the reference 2, includes a handle 4, surrounded by a covering strip 6, also called “grip”.
  • This handle is extended by a sieve 8, of oval shape, with the interior of which a rope is stretched 10.
  • the area of junction between the handle and the sieve, also called core 12 comprises two divergent branches 14, connected by a bridge 16 at their end opposite to the handle 4.
  • the handle 4, the screen 8 and the heart 12, which form the racket frame, have a rigid tubular body 18 illustrated in particular in Figure 2, which is for example made made of aluminum or more advantageously of composite material.
  • This tubular body could for example be made from carbon fibers which can also be mixed with other types of fibers, such as glass fibers, all these fibers being linked in a matrix which can be a thermosetting or thermoplastic resin.
  • a matrix in epoxy resin may for example be advantageously used.
  • This tubular body 18 has a main portion 20 of substantially constant section, as well as a portion intermediate 22, forming a constriction.
  • the latter which is coaxial with the main portion 20, has a dimension transverse lower than this and is connected to it by via two peripheral shoulders 24.
  • this portion intermediate 22 is present on one of the branches 14 of the heart 12. Alternatively, it can equip another frame region. It is also possible to envisage several similar intermediate portions.
  • a reinforcing element 26 tubular in shape, covers the intermediate portion 22. A this effect, this element 26 extends between the regions of the main portion 20 adjacent to the shoulders 24.
  • This element 26 is made for example of metal, material plastic or, preferably, a composite material. He is by elsewhere coaxial with the main portion 20, as well as with the intermediate portion 22. It is fixed on the regions above of the main portion 20, rigidly.
  • the internal wall of the reinforcing element 26 thus forms, with the external wall opposite the intermediate portion 22, an intermediate volume 28, of annular shape, extending over the whole of the periphery of this intermediate portion 22.
  • This intermediate volume 28 has a longitudinal dimension, or length l , comprised, for example, between 2 and 10 cm, as well as a transverse dimension, or thickness e , comprised, for example, between 0.5 and 5 mm. It is filled by means of a gas, which can in particular be air.
  • FIG. 4 illustrates a first alternative embodiment of the invention, in which the mechanical elements analogous to those of FIGS. 1 and 2 are assigned the same reference numbers, increased by 50.
  • the tubular element 26 is replaced by several rods 76, which extend around the periphery of the intermediate portion 72.
  • FIG. 5 illustrates a second alternative embodiment of the invention, in which the mechanical elements analogous to those of FIGS. 1 and 2 are assigned the same reference numbers, increased by 100.
  • the tubular element 26 is replaced by several bands 126, forming arcs of a circle, which extend to the outer periphery of the intermediate portion 122.
  • FIGS. 1 and 2 illustrates an additional variant of the invention, in which similar mechanical elements to those of FIGS. 1 and 2 are assigned the same numbers of reference, increased by 150.
  • the reinforcing element 176 is rigidly fixed, only at one end, on the main portion 170. On the other hand, it is linked to this last, at its other end, with the interposition of a deformable ring 180.
  • This ring allows a degree of freedom, along the axis main A, between main portion 170 and the element of reinforcement 176.
  • This ring can for example be glued at once to this portion 170 and to this element 176, so it's subject to some shearing, during their mutual displacement along axis A.
  • this ring may not be glued but simply to be interposed between position 170 and the reinforcing element 176, so that it is able to rub along these, during their mutual displacement.
  • the intermediate volume 178 is filled with a foam 182, which is for example of the EVA (ethylene-vinyl-acetate) type.
  • foam 182 can be replaced by any other material which does not significantly influence the mechanical behavior of the whole racket. he can these include, among other things, gel.
  • This intermediate volume is neutral with regard to behavior racket mechanics, insofar as it does not constitute not a structural element of the latter. It indeed forms a bifurcation between the intermediate portion of the body main and reinforcing means, and contributes to them mechanically separate. This volume does not contradict the operation of the racket, especially with regard to relates to deflection and shear.
  • this intermediate portion may have a substantially transverse dimension analogous to that of this main portion.
  • this intermediate portion is then surrounded by a larger diameter reinforcement area, which can be produced as a tubular element or as elements discrete, as in Figures 3 to 5.
  • reinforcing means extending to the periphery of an intermediate portion of the tubular body, belonging to the racket frame, is advantageous. Indeed, these reinforcing means make it possible to increase the rigidity of the racket according to the invention.
  • deformable means modulates the rigidity given to this racket. Of so it is possible to create a range of snowshoes having various rigidities, depending in particular on the user needs.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Pulmonology (AREA)
  • Laminated Bodies (AREA)

Abstract

Ce cadre de raquette comprend un corps principal (18), qui possède une portion intermédiaire (22) au voisinage de laquelle sont prévus des moyens de renfort (26), ces moyens de renfort définissant, avec cette portion intermédiaire, un volume intercalaire (28) s'étendant sur toute la périphérie extérieure de ladite portion intermédiaire. <IMAGE>This racket frame comprises a main body (18), which has an intermediate portion (22) in the vicinity of which are provided reinforcement means (26), these reinforcement means defining, with this intermediate portion, an intermediate volume (28 ) extending over the entire outer periphery of said intermediate portion. <IMAGE>

Description

La présente invention concerne un cadre de raquette, une raquette pourvue d'un tel cadre, ainsi qu'un jeu de plusieurs de ces cadres.The present invention relates to a racket frame, a racket provided with such a frame, as well as a set of several of these frames.

L'invention vise plus particulièrement une raquette munie d'un tamis, telle qu'une raquette de tennis, de badminton ou de squash.The invention relates more particularly to a racket provided a sieve, such as a tennis racket, badminton racket or squash.

On connaít, par US-A-6,012,996, une telle raquette qui comprend un cadre réalisé en une matière plastique renforcée de fibres. Ce cadre, qui se compose d'un tamis, d'un manche et d'un coeur situé entre le tamis et le manche, possède un corps principal ovale, formé de deux tubes intérieurs, ainsi que d'un tube extérieur.We know, from US-A-6,012,996, such a racket which includes a frame made of reinforced plastic fiber. This frame, which consists of a sieve, a handle and a heart located between the sieve and the handle, has a oval main body, formed of two inner tubes, thus than an outer tube.

Selon l'enseignement de ce document, les deux tubes intérieurs sont disposés côte à côte, de sorte que leurs parois adjacentes forment une nervure transversale, destinée à renforcer le cadre, alors que la présence du tube extérieur permet de réduire les contraintes susceptibles de se produire au niveau de cette nervure.According to the teaching of this document, the two tubes interiors are arranged side by side, so that their adjacent walls form a transverse rib, intended reinforce the frame, while the presence of the outer tube reduces stresses that may occur at this rib.

L'invention se propose de réaliser un cadre de raquette constituant une alternative à l'art antérieur présenté ci-dessus.The invention proposes to produce a racket frame constituting an alternative to the prior art presented above.

A cet effet, elle a pour objet un cadre de raquette, notamment de tennis, de squash ou de badminton, comprenant un corps tubulaire, caractérisé en ce que ledit corps tubulaire possède au moins une portion intermédiaire au voisinage de laquelle sont prévus des moyens de renfort, ces moyens de renfort définissant, avec cette portion intermédiaire, un volume intercalaire s'étendant sur toute la périphérie extérieure de ladite portion intermédiaire.For this purpose, it relates to a racket frame, including tennis, squash or badminton, including a tubular body, characterized in that said tubular body has at least one intermediate portion in the vicinity of which are provided with reinforcing means, these means reinforcement defining, with this intermediate portion, a spacer volume extending over the entire periphery outside of said intermediate portion.

L'invention a également pour objet une raquette, notamment de tennis, de squash ou de badminton, comprenant un cadre comportant un tamis, ainsi qu'un cordage tendu autour de ce tamis, caractérisé en ce que ce cadre est tel que défini ci-dessus.The invention also relates to a racket, including tennis, squash or badminton, including a frame with a sieve and a rope stretched around of this sieve, characterized in that this frame is as defined above.

L'invention a enfin pour objet un jeu de cadres, comprenant plusieurs types de cadres tels que définis ci-dessus.The invention finally relates to a set of frames, comprising several types of frames as defined above.

L'invention va être décrite ci-dessous, en référence aux dessins annexés, donnés uniquement à titre d'exemples non limitatifs et dans lesquels :

  • la figure 1 est une vue en perspective d'une raquette conforme à l'invention ;
  • la figure 2 est une vue en coupe longitudinale, illustrant de façon partielle le cadre de la raquette de la figure 1 ;
  • la figure 3 est une vue en coupe transversale selon la ligne III-III de la figure 2 ;
  • les figures 4 et 5 sont des vues en coupe transversale, analogues à la figure 3, illustrant deux variantes de réalisation de l'invention ; et
  • la figure 6 est une vue en coupe longitudinale, analogue à la figure 2, illustrant une variante supplémentaire de l'invention.
The invention will be described below, with reference to the accompanying drawings, given only by way of nonlimiting examples and in which:
  • Figure 1 is a perspective view of a racket according to the invention;
  • Figure 2 is a longitudinal sectional view, partially illustrating the frame of the racket of Figure 1;
  • Figure 3 is a cross-sectional view along line III-III of Figure 2;
  • Figures 4 and 5 are cross-sectional views, similar to Figure 3, illustrating two alternative embodiments of the invention; and
  • Figure 6 is a longitudinal sectional view, similar to Figure 2, illustrating a further variant of the invention.

La raquette illustrée sur la figure 1, qui est désignée dans son ensemble par la référence 2, comprend un manche 4, entouré d'une bande de revêtement 6, encore dénommée "grip". Ce manche est prolongé par un tamis 8, de forme ovale, à l'intérieur duquel est tendu un cordage 10. La zone de jonction entre le manche et le tamis, encore appelée coeur 12, comprend deux branches divergentes 14, reliées par un pont 16 à leur extrémité opposée au manche 4.The racket illustrated in Figure 1, which is designated as a whole by the reference 2, includes a handle 4, surrounded by a covering strip 6, also called "grip". This handle is extended by a sieve 8, of oval shape, with the interior of which a rope is stretched 10. The area of junction between the handle and the sieve, also called core 12, comprises two divergent branches 14, connected by a bridge 16 at their end opposite to the handle 4.

Le manche 4, le tamis 8 et le coeur 12, qui forment le cadre de la raquette, comportent un corps tubulaire rigide 18 illustré notamment à la figure 2, qui est par exemple réalisé en aluminium ou plus avantageusement en matériau composite. Ce corps tubulaire pourra par exemple être fabriqué à partir de fibres de carbone pouvant être également mêlées avec d'autres types de fibres, comme les fibres de verre, toutes ces fibres étant liées dans une matrice pouvant être une résine thermodurcissable ou thermoplastique. Une matrice en résine époxyde pourra par exemple être avantageusement utilisée.The handle 4, the screen 8 and the heart 12, which form the racket frame, have a rigid tubular body 18 illustrated in particular in Figure 2, which is for example made made of aluminum or more advantageously of composite material. This tubular body could for example be made from carbon fibers which can also be mixed with other types of fibers, such as glass fibers, all these fibers being linked in a matrix which can be a thermosetting or thermoplastic resin. A matrix in epoxy resin may for example be advantageously used.

Ce corps tubulaire 18 comporte une portion principale 20 de section sensiblement constante, ainsi qu'une portion intermédiaire 22, formant étranglement. Cette dernière, qui est coaxiale à la portion principale 20, possède une dimension transversale inférieure à celle-ci et s'y raccorde par l'intermédiaire de deux épaulements périphériques 24.This tubular body 18 has a main portion 20 of substantially constant section, as well as a portion intermediate 22, forming a constriction. The latter, which is coaxial with the main portion 20, has a dimension transverse lower than this and is connected to it by via two peripheral shoulders 24.

Dans l'exemple décrit et représenté, cette portion intermédiaire 22 est présente sur l'une des branches 14 du coeur 12. A titre de variante, elle peut équiper une autre région du cadre. Il est également envisageable de prévoir plusieurs portions intermédiaires analogues.In the example described and shown, this portion intermediate 22 is present on one of the branches 14 of the heart 12. Alternatively, it can equip another frame region. It is also possible to envisage several similar intermediate portions.

Comme le montre la figure 2, un élément de renfort 26, de forme tubulaire, recouvre la portion intermédiaire 22. A cet effet, cet élément 26 s'étend entre les régions de la portion principale 20 adjacentes aux épaulements 24.As shown in FIG. 2, a reinforcing element 26, tubular in shape, covers the intermediate portion 22. A this effect, this element 26 extends between the regions of the main portion 20 adjacent to the shoulders 24.

Cet élément 26 est réalisé par exemple en métal, matière plastique ou, de préférence, en matériau composite. Il est par ailleurs coaxial à la portion principale 20, ainsi qu'à la portion intermédiaire 22. Il se trouve fixé sur les régions précitées de la portion principale 20, de façon rigide.This element 26 is made for example of metal, material plastic or, preferably, a composite material. He is by elsewhere coaxial with the main portion 20, as well as with the intermediate portion 22. It is fixed on the regions above of the main portion 20, rigidly.

Ceci signifie qu'il n'existe sensiblement aucun degré en liberté entre la portion principale 20 et l'élément de renfort 26, en particulier selon l'axe principal A du corps tubulaire 18. Une telle fixation, qui correspond à une liaison complète entre la portion principale et l'élément de renfort, est réalisée, par exemple, par liaison intime de ces derniers lors de leur moulage, ou bien encore par collage, notamment dans le cas où on fait appel à de l'aluminium.This means that there is essentially no degree in freedom between the main portion 20 and the reinforcing element 26, in particular along the main axis A of the tubular body 18. Such a fixation, which corresponds to a complete bond between the main portion and the reinforcing element, is carried out, for example, by intimate connection of the latter during of their molding, or even by gluing, especially in the case where aluminum is used.

La paroi intérieure de l'élément de renfort 26 forme ainsi, avec la paroi extérieure en regard de la portion intermédiaire 22, un volume intercalaire 28, de forme annulaire, s'étendant sur l'ensemble de la périphérie de cette portion intermédiaire 22. Ce volume intercalaire 28 possède une dimension longitudinale, ou longueur l, comprise, par exemple, entre 2 et 10 cm, ainsi qu'une dimension transversale, ou épaisseur e, comprise, par exemple, entre 0,5 et 5 mm. Il est rempli au moyen d'un gaz, qui peut être notamment de l'air.The internal wall of the reinforcing element 26 thus forms, with the external wall opposite the intermediate portion 22, an intermediate volume 28, of annular shape, extending over the whole of the periphery of this intermediate portion 22. This intermediate volume 28 has a longitudinal dimension, or length l , comprised, for example, between 2 and 10 cm, as well as a transverse dimension, or thickness e , comprised, for example, between 0.5 and 5 mm. It is filled by means of a gas, which can in particular be air.

La figure 4 illustre une première variante de réalisation de l'invention, dans laquelle les éléments mécaniques analogues à ceux des figures 1 et 2 sont affectés des mêmes numéros de référence, augmentés de 50. Selon cette variante, l'élément tubulaire 26 est remplacé par plusieurs tiges 76, qui s'étendent à la périphérie de la portion intermédiaire 72.FIG. 4 illustrates a first alternative embodiment of the invention, in which the mechanical elements analogous to those of FIGS. 1 and 2 are assigned the same reference numbers, increased by 50. According to this variant, the tubular element 26 is replaced by several rods 76, which extend around the periphery of the intermediate portion 72.

La figure 5 illustre une seconde variante de réalisation de l'invention, dans laquelle les éléments mécaniques analogues à ceux des figures 1 et 2 sont affectés des mêmes numéros de référence, augmentés de 100. Selon cette seconde variante, l'élément tubulaire 26 est remplacé par plusieurs bandes 126, formant des arcs de cercle, qui s'étendent à la périphérie extérieure de la portion intermédiaire 122.FIG. 5 illustrates a second alternative embodiment of the invention, in which the mechanical elements analogous to those of FIGS. 1 and 2 are assigned the same reference numbers, increased by 100. According to this second variant, the tubular element 26 is replaced by several bands 126, forming arcs of a circle, which extend to the outer periphery of the intermediate portion 122.

La figure 6 illustre une variante supplémentaire de l'invention, dans laquelle les éléments mécaniques analogues à ceux des figures 1 et 2 sont affectés des mêmes numéros de référence, augmentés de 150.Figure 6 illustrates an additional variant of the invention, in which similar mechanical elements to those of FIGS. 1 and 2 are assigned the same numbers of reference, increased by 150.

Selon cette troisième variante, l'élément de renfort 176 est fixé de façon rigide, seulement à l'une de ses extrémités, sur la portion principale 170. En revanche, il est lié à cette dernière, à son autre extrémité, avec interposition d'un anneau déformable 180.According to this third variant, the reinforcing element 176 is rigidly fixed, only at one end, on the main portion 170. On the other hand, it is linked to this last, at its other end, with the interposition of a deformable ring 180.

Ce dernier autorise un degré de liberté, selon l'axe principal A, entre la portion principale 170 et l'élément de renfort 176. Cet anneau peut par exemple être collé à la fois à cette portion 170 et à cet élément 176, de sorte qu'il est sujet à un certain cisaillement, lors de leur déplacement mutuel selon l'axe A. En variante, cet anneau peut ne pas être collé mais simplement être interposé entre la position 170 et l'élément de renfort 176, de sorte qu'il est à même de frotter le long de ces derniers, lors de leur déplacement mutuel.The latter allows a degree of freedom, along the axis main A, between main portion 170 and the element of reinforcement 176. This ring can for example be glued at once to this portion 170 and to this element 176, so it's subject to some shearing, during their mutual displacement along axis A. As a variant, this ring may not be glued but simply to be interposed between position 170 and the reinforcing element 176, so that it is able to rub along these, during their mutual displacement.

Par ailleurs, le volume intercalaire 178 est rempli d'une mousse 182, qui est par exemple du type EVA (éthylène-vinyl-acétate). En variante, une telle mousse peut être remplacée par tout autre matériau n'influençant sensiblement pas le comportement mécanique de l'ensemble de la raquette. Il peut s'agir, entre autres, de gel.Furthermore, the intermediate volume 178 is filled with a foam 182, which is for example of the EVA (ethylene-vinyl-acetate) type. Alternatively, such foam can be replaced by any other material which does not significantly influence the mechanical behavior of the whole racket. he can these include, among other things, gel.

Ce volume intercalaire, qu'il soit rempli d'un gaz ou d'un matériau solide, est neutre à l'égard du comportement mécanique de la raquette, dans la mesure où il ne constitue pas un élément structurel de cette dernière. Il forme en effet une bifurcation entre la portion intermédiaire du corps principal et les moyens de renfort, et contribue à les désolidariser mécaniquement. Ce volume ne contrarie pas le fonctionnement de la raquette, en particulier en ce qui concerne le fléchissement et la cisaillement.This intermediate volume, whether it is filled with a gas or of a solid material, is neutral with regard to behavior racket mechanics, insofar as it does not constitute not a structural element of the latter. It indeed forms a bifurcation between the intermediate portion of the body main and reinforcing means, and contributes to them mechanically separate. This volume does not contradict the operation of the racket, especially with regard to relates to deflection and shear.

Dans l'ensemble des exemples décrits et représentés, il a été fait mention d'une portion intermédiaire de plus faible dimension transversale que la portion principale du corps tubulaire. A titre de variante, cette portion intermédiaire peut présenter une dimension transversale sensiblement analogue à celle de cette portion principale. Dans une telle hypothèse, cette portion intermédiaire est alors entourée par une zone de renfort de plus grand diamètre, qui peut être réalisée sous forme d'un élément tubulaire ou bien d'éléments discrets, comme sur les figures 3 à 5.In all of the examples described and represented, it has been mentioned a lower intermediate portion transverse dimension than the main portion of the body tubular. As a variant, this intermediate portion may have a substantially transverse dimension analogous to that of this main portion. In such hypothesis, this intermediate portion is then surrounded by a larger diameter reinforcement area, which can be produced as a tubular element or as elements discrete, as in Figures 3 to 5.

Faire appel à des moyens de renfort s'étendant à la périphérie d'une portion intermédiaire du corps tubulaire, appartenant au cadre de la raquette, est avantageux. En effet, ces moyens de renfort permettent d'augmenter la rigidité de la raquette conforme à l'invention.Use reinforcing means extending to the periphery of an intermediate portion of the tubular body, belonging to the racket frame, is advantageous. Indeed, these reinforcing means make it possible to increase the rigidity of the racket according to the invention.

En outre, la présence éventuelle de moyens déformables permet de moduler la rigidité conférée à cette raquette. De la sorte, il est envisageable de créer une gamme de raquettes possédant des rigidités diverses, en fonction notamment des besoins des utilisateurs.In addition, the possible presence of deformable means modulates the rigidity given to this racket. Of so it is possible to create a range of snowshoes having various rigidities, depending in particular on the user needs.

Claims (11)

Cadre de raquette (2), notamment de tennis, de squash ou de badminton, comprenant un corps tubulaire (18 ; 68 ; 118 ; 168), caractérisé en ce que ledit corps tubulaire possède au moins une portion intermédiaire (22 ; 72 ; 122 ; 172) au voisinage de laquelle sont prévus des moyens de renfort (26 ; 76 ; 126 ; 176), ces moyens de renfort définissant, avec cette portion intermédiaire, un volume intercalaire (28 ; 78 ; 128 ; 178) s'étendant sur toute la périphérie extérieure de ladite portion intermédiaire.Racket frame (2), in particular for tennis, squash or badminton, comprising a tubular body (18; 68; 118; 168), characterized in that said tubular body has at least one intermediate portion (22; 72; 122 ; 172) in the vicinity of which reinforcing means are provided (26; 76; 126; 176), these reinforcing means defining, with this intermediate portion, an intermediate volume (28; 78; 128; 178) extending over the entire outer periphery of said intermediate portion. Cadre selon la revendication 1, caractérisé en ce que ledit volume intercalaire (28 ; 78 ; 128 ; 178) possède une dimension transversale (e) comprise entre 0,5 et 5 mm, de préférence entre 1 et 2 mm.Frame according to claim 1, characterized in that said intermediate volume (28; 78; 128; 178) has a transverse dimension ( e ) of between 0.5 and 5 mm, preferably between 1 and 2 mm. Cadre selon la revendication 1 ou 2, caractérisé en ce que ledit volume intercalaire (28 ; 78 ; 128) est rempli au moyen d'un gaz, notamment de l'air.Frame according to claim 1 or 2, characterized in that said intermediate volume (28; 78; 128) is filled by means of a gas, in particular air. Cadre selon la revendication 1 ou 2, caractérisé en ce que ledit volume intercalaire (178) est rempli au moyen d'une mousse (182).Frame according to claim 1 or 2, characterized in that said intermediate volume (178) is filled by means of a foam (182). Cadre selon les revendications 1 à 4, caractérisé en ce que les moyens de renfort comprennent un élément tubulaire (26 ; 176) s'étendant à la périphérie de ladite portion intermédiaire (22 ; 172).Frame according to claims 1 to 4, characterized in that the reinforcing means comprise a tubular element (26; 176) extending at the periphery of said intermediate portion (22; 172). Cadre selon l'une des revendications 1 à 4, caractérisé en ce que les moyens de renfort comprennent plusieurs éléments discrets (76 ; 126).Frame according to one of claims 1 to 4, characterized in that the reinforcing means comprise several discrete elements (76; 126). Cadre selon l'une des revendications précédentes, caractérisé en ce que lesdits moyens de renfort (26 ; 76 ; 126 ; 176) sont liés à des régions (20 ; 170) dudit corps, disposées de part et d'autre de ladite portion intermédiaire (22).Frame according to one of the preceding claims, characterized in that said reinforcing means (26; 76; 126; 176) are linked to regions (20; 170) of said body, arranged on either side of said intermediate portion (22). Cadre selon la revendication 7, caractérisé en ce que lesdits moyens de renfort (26 ; 76 ; 126) sont solidarisés auxdites régions (20) de façon rigide.Frame according to Claim 7, characterized in that the said reinforcing means (26; 76; 126) are rigidly connected to the said regions (20). Cadre selon la revendication 7, caractérisé en ce que lesdits moyens de renfort (176) sont liés auxdites régions (170) avec interposition, au moins à l'une de leurs extrémités, de moyens déformables (180), aptes à assurer au moins un degré de liberté entre les moyens de renfort et le corps tubulaire.Frame according to claim 7, characterized in that said reinforcing means (176) are linked to said regions (170) with the interposition, at least at one of their ends, of deformable means (180), capable of ensuring at least one degree of freedom between the reinforcing means and the tubular body. Raquette, notamment de tennis, de squash ou de badminton, comprenant un cadre (4, 6, 8) comportant un tamis (8), ainsi qu'un cordage (10) tendu autour de ce tamis (8), caractérisée en ce que le cadre est conforme à l'une quelconque des revendications précédentes.Racket, in particular tennis, squash or badminton, comprising a frame (4, 6, 8) comprising a sieve (8), as well as a rope (10) stretched around this sieve (8), characterized in that the frame conforms to any one of the preceding claims. Jeu de cadres de raquette, comprenant au moins un cadre conforme à la revendication 8 et au moins un cadre conforme à la revendication 9.Racket frame set, comprising at least one frame according to claim 8 and at least one frame according to claim 9.
EP01420206A 2000-10-17 2001-10-16 Racket frame Withdrawn EP1201271A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0013296A FR2815259B1 (en) 2000-10-17 2000-10-17 RACKET FRAME, RACKET COMPRISING SUCH A FRAME, AND SET OF SUCH FRAMES
FR0013296 2000-10-17

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EP1201271A1 true EP1201271A1 (en) 2002-05-02

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EP01420206A Withdrawn EP1201271A1 (en) 2000-10-17 2001-10-16 Racket frame

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US (1) US6592475B2 (en)
EP (1) EP1201271A1 (en)
JP (1) JP2002136623A (en)
FR (1) FR2815259B1 (en)

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FR2815259B1 (en) * 2000-10-17 2003-01-03 Babolat Vs RACKET FRAME, RACKET COMPRISING SUCH A FRAME, AND SET OF SUCH FRAMES
TWM242251U (en) * 2003-07-01 2004-09-01 Yuan Min An Entpr Co Ltd Racket with shock absorption features
DE102004054190B3 (en) * 2004-11-10 2006-05-18 Völkl Tennis GmbH Play racquet e.g. for ball such as tennis, has framework for allowing springing covering and shaft connected from framework and shaft is racquet grip
DE602006005900D1 (en) * 2006-04-11 2009-05-07 Prince Sports Inc Method of making a sports racquet
US20100240477A1 (en) * 2007-08-24 2010-09-23 Davis Stephen J sports stick structure
KR20150002944U (en) * 2013-10-14 2015-07-29 트리-그레이트 인터내셔널 리미티드 Structurally improved hollow fiber pipe

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US6012996A (en) 1998-03-05 2000-01-11 Shenly Won Sport Co., Ltd. Game racket frame made of fiber reinforced plastic

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US4983242A (en) * 1988-11-02 1991-01-08 Roland Reed Tennis racquet having a sandwich construction, vibration-dampening frame
CA2042484C (en) * 1991-05-13 1996-06-25 Chin-San You Ball bat
US5220719A (en) * 1992-01-06 1993-06-22 You Chin San Method of making game racket frame
US5368298A (en) * 1994-01-07 1994-11-29 You; Chin-San Game racket of composite material
FR2815259B1 (en) * 2000-10-17 2003-01-03 Babolat Vs RACKET FRAME, RACKET COMPRISING SUCH A FRAME, AND SET OF SUCH FRAMES

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US4031181A (en) * 1972-04-05 1977-06-21 General Dynamics Corporation Method for molding high strength facing
DE3541590C1 (en) * 1985-11-25 1987-03-26 Voelkl Franz Ski Ball-game racket
US6012996A (en) 1998-03-05 2000-01-11 Shenly Won Sport Co., Ltd. Game racket frame made of fiber reinforced plastic

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US6592475B2 (en) 2003-07-15
FR2815259A1 (en) 2002-04-19
FR2815259B1 (en) 2003-01-03
JP2002136623A (en) 2002-05-14
US20020052256A1 (en) 2002-05-02

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