EP0642811A1 - Vibration dampener for a tennis racket - Google Patents

Vibration dampener for a tennis racket Download PDF

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Publication number
EP0642811A1
EP0642811A1 EP94402008A EP94402008A EP0642811A1 EP 0642811 A1 EP0642811 A1 EP 0642811A1 EP 94402008 A EP94402008 A EP 94402008A EP 94402008 A EP94402008 A EP 94402008A EP 0642811 A1 EP0642811 A1 EP 0642811A1
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EP
European Patent Office
Prior art keywords
uprights
grooves
central
vibration damper
racket
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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.)
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Application number
EP94402008A
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German (de)
French (fr)
Inventor
Bart A. Hillock
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Individual
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Individual
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/54Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations

Definitions

  • the present invention relates to a vibration damper for tennis rackets.
  • EP-A-0 465 848 describes an elastic band which is inserted between the strings of a racket, terminated at each of its ends by a toric piece of mass higher than that of the band.
  • the O-rings are held on the rope by slots.
  • FR-A-2 554 723 and FR-A-2 666 237 relates to a vibration damper for tennis racket strings, consisting of a pad having lateral slots for introducing strings.
  • FR-A- 2 666 237 relates to a vibration damper consisting of a main elastomer body mounted between two cords by means of slots provided with tongues.
  • the object of the present invention is to provide a shock absorber with three-point attachment intended to be mounted directly on the rope which is more effective than the preceding shock absorbers and is held in place by its three hooks whatever the violence of the shocks to which it is subjected. racket.
  • the vibration damper intended to be mounted on the string of a tennis racket is characterized in that it consists of a symmetrical oblong body whose length is slightly greater than the sum of the distances of the six central uprights, having four central grooves and two lateral grooves intended to receive the six uprights, respectively above and below the oblong body, the grooves being formed by four flanges respectively long and short joined by studs perpendicular to the surface of the flaccid.
  • the central grooves have a "T" section which can receive, in the angles of the horizontal branch of the T, two adjacent central uprights.
  • the symmetry of the shock absorber is reflected in the fact that the rope is trapped in the slots on either side of the axis of symmetry and is thus firmly held.
  • the damper generally designated by the reference 10 is of substantially oval shape. It is obtained by molding a synthetic viscoelastic elastomer material such as polyurethane. In the example shown, it is mounted at the bottom of the racket on six central uprights M below the beam closest to the handle.
  • the damper 10 is formed by four flanges 1,2,3,4 of oblong shape, namely, two flanges 1 and 3 long and two flanges 2 and 4 short.
  • Each face of the shock absorber includes a long flange and a short flange.
  • the flanges are joined by studs 5 which determine peripheral 6 and central grooves 7.
  • the two outermost uprights are inserted in the grooves 6 while the most central uprights are inserted in the grooves 7, at the rate of two uprights per groove. They come to bear, with a certain clearance against the studs 5 which ensures, from the point of view of vibrations, a certain joining of the uprights which thus can no longer vibrate at their natural frequency.
  • FIG. 3 represents the shock absorber seen from above and, preferably, the flanges 1 and 2 have an inner edge 8, 9 rounded so that the uprights introduced into the grooves 6 and 7 are covered over part of their length which prevents them from coming out of the grooves when the cords are deformed following an impact.
  • Figure 4 is an end view of the damper according to the invention We see that a long flange 1 is opposite a short flange 4 as on the other side the long flange 3 is arranged opposite the short flange 2.
  • the shock absorber is thus perfectly locked on the uprights and, by its elastic nature, follows the deformations of the strings and quickly brings them to rest.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Vibration Dampers (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

- Vibration dampener mounted on the strings, for a tennis racket, comprising four plates (1, 2, 3, 4) joined in pairs and defining grooves into which the vertical strings (M) of the stringing are inserted and which are thus held elastically but firmly. <IMAGE>

Description

La présente invention a pour objet un amortisseur de vibrations pour raquette de tennis.The present invention relates to a vibration damper for tennis rackets.

On sait que les vibrations générées par l'impact d'une balle sur une raquette conduisent à des pathologies physiologiques telle que celle qui est connue sous le nom de "Tennis elbow" qui est essentiellement une tendinite très douloureuse.We know that the vibrations generated by the impact of a ball on a racket lead to physiological pathologies such as that which is known under the name of "Tennis elbow" which is essentially a very painful tendinitis.

Afin de pallier cet inconvénient, il a déjà été proposé de munir les raquettes de dispositifs amortisseurs qui, selon les cas, sont montés soit au bout du manche, soit dans la région du coeur de la raquette, (au niveau de l'entretoise, le cas échéant), soit directement sur le cordage. Cette dernière solution s'est avérée la plus efficace. De tels amortisseurs sont connus, notamment par EP-A-0 465 848, FR-A-2 554 723 et FR-A- 2 666 237.In order to overcome this drawback, it has already been proposed to provide the rackets with damping devices which, as the case may be, are mounted either at the end of the handle or in the region of the heart of the racket, (at the level of the spacer, if applicable), either directly on the line. The latter solution has proven to be the most effective. Such dampers are known, in particular from EP-A-0 465 848, FR-A-2 554 723 and FR-A- 2 666 237.

EP-A-0 465 848 décrit une bande élastique qui s'insère entre les cordes d'une raquette, terminée à chacune de ses extrémités par une pièce torique de masse plus élevée que celle de la bande. Les pièces toriques sont maintenues sur le cordage par des fentes.EP-A-0 465 848 describes an elastic band which is inserted between the strings of a racket, terminated at each of its ends by a toric piece of mass higher than that of the band. The O-rings are held on the rope by slots.

FR-A-2 554 723 et FR-A- 2 666 237 concerne un amortisseur de vibrations pour cordages de raquette de tennis, consistant en un tampon présentant des fentes latérales d'introduction de cordes. FR-A- 2 666 237 concerne un amortisseur de vibrations constitué d'un corps principal en élastomère se montant entre deux cordes au moyen de fentes munies de languettes.FR-A-2 554 723 and FR-A-2 666 237 relates to a vibration damper for tennis racket strings, consisting of a pad having lateral slots for introducing strings. FR-A- 2 666 237 relates to a vibration damper consisting of a main elastomer body mounted between two cords by means of slots provided with tongues.

Mais l'amortissement ainsi obtenu s'avère néanmoins insuffisant. Par ailleurs, à la suite des chocs violents et répétés, il arrive souvent que l'amortisseur monté sur les cordes soit éjecté.However, the depreciation thus obtained turns out to be insufficient. In addition, following violent and repeated shocks, it often happens that the shock absorber mounted on the cords is ejected.

La présente invention a pour objet de proposer un amortisseur à accrochage en trois points destiné à être monté directement sur le cordage qui soit plus efficace que les amortisseurs précédents et soit maintenu en place par ses trois accrochages quelle que soit la violence des chocs auxquels est soumise la raquette.The object of the present invention is to provide a shock absorber with three-point attachment intended to be mounted directly on the rope which is more effective than the preceding shock absorbers and is held in place by its three hooks whatever the violence of the shocks to which it is subjected. racket.

Selon l'invention, l'amortisseur de vibrations destiné à être monté sur le cordage d'une raquette de tennis est caractérisé en ce qu'il est constitué par un corps oblong symétrique dont la longueur est légèrement supérieure à la somme des distance des six montants centraux, présentant quatre rainures centrales et deux rainures latérales destinées à recevoir les six montants, respectivement au-dessus et au-dessous du corps oblong, les rainures étant formées par quatre flasques respectivement longs et courts réunis par des plots perpendiculaire à la surface des flasques.According to the invention, the vibration damper intended to be mounted on the string of a tennis racket is characterized in that it consists of a symmetrical oblong body whose length is slightly greater than the sum of the distances of the six central uprights, having four central grooves and two lateral grooves intended to receive the six uprights, respectively above and below the oblong body, the grooves being formed by four flanges respectively long and short joined by studs perpendicular to the surface of the flaccid.

Les rainures centrales présentent une section en "T" pouvant recevoir, dans les angles de la branche horizontale du T deux montants centraux adjacents. La symétrie de l'amortisseur se traduit en ce que le cordage est emprisonné dans les fentes de part et d'autre de l'axe de symétrie et est ainsi fermement maintenu.The central grooves have a "T" section which can receive, in the angles of the horizontal branch of the T, two adjacent central uprights. The symmetry of the shock absorber is reflected in the fact that the rope is trapped in the slots on either side of the axis of symmetry and is thus firmly held.

D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description qui va suivre d'un mode particulier de réalisation, donné uniquement à titre d'exemple non limitatif, en regard des dessins qui représentent :

  • La Figure 1, une vue en perspective de l'amortisseur selon l'invention;
  • La Figure 2, une vue de côté de l'amortisseur;
  • La Figure 3, une vue par-dessus du même amortisseur
  • La Figure 4, une vue en bout de l'amortisseur.
Other characteristics and advantages of the invention will appear during the description which follows of a particular embodiment, given solely by way of nonlimiting example, with reference to the drawings which represent:
  • Figure 1, a perspective view of the damper according to the invention;
  • Figure 2, a side view of the shock absorber;
  • Figure 3, a view over the same shock absorber
  • Figure 4, an end view of the shock absorber.

Sur la figure 1, on voit que l'amortisseur désigné d'une manière générale par la référence 10 est de forme sensiblement ovale. Il est obtenu par moulage d'une matière élastomère viscoélastique synthétique telle que du polyuréthane. Dans l'exemple représenté, il est monté dans le bas de la raquette sur six montants centraux M au-dessous du travers le plus près du manche.In FIG. 1, it can be seen that the damper generally designated by the reference 10 is of substantially oval shape. It is obtained by molding a synthetic viscoelastic elastomer material such as polyurethane. In the example shown, it is mounted at the bottom of the racket on six central uprights M below the beam closest to the handle.

L'amortisseur 10 est formé de quatre flasques 1,2,3,4 de forme oblongue à savoir, deux flasques 1 et 3 longs et deux flasques 2 et 4 courts. Chaque face de l'amortisseur comprend un flasque long et un flasque court.The damper 10 is formed by four flanges 1,2,3,4 of oblong shape, namely, two flanges 1 and 3 long and two flanges 2 and 4 short. Each face of the shock absorber includes a long flange and a short flange.

Comme cela apparaît sur la figure 2, les flasques sont réunis par des plots 5 qui déterminent des rainures périphériques 6 et centrales 7. Les deux montants les plus extérieurs s'insèrent dans les rainures 6 alors que les montants les plus centraux s'insèrent dans les rainures 7, à raison de deux montants par rainure. Ils viennent porter, avec un certain jeu contre les plots 5 ce qui assure, du point de vue des vibrations, une certains solidarisation des montants qui ainsi ne peuvent plus vibrer à leur fréquence propre.As shown in Figure 2, the flanges are joined by studs 5 which determine peripheral 6 and central grooves 7. The two outermost uprights are inserted in the grooves 6 while the most central uprights are inserted in the grooves 7, at the rate of two uprights per groove. They come to bear, with a certain clearance against the studs 5 which ensures, from the point of view of vibrations, a certain joining of the uprights which thus can no longer vibrate at their natural frequency.

La figure 3 représente l'amortisseur en vue par-dessus et, de préférence, les flasques 1 et 2 présentent un bord intérieur 8,9 arrondi de sorte que les montants introduits dans les rainures 6 et 7 soient recouverts sur une partie de leur longueur ce qui évite leur sortie hors des rainures lorsque les cordes se déforment à la suite d'un impact.FIG. 3 represents the shock absorber seen from above and, preferably, the flanges 1 and 2 have an inner edge 8, 9 rounded so that the uprights introduced into the grooves 6 and 7 are covered over part of their length which prevents them from coming out of the grooves when the cords are deformed following an impact.

La figure 4 est une vue en bout de l'amortisseur selon l'invention On voit qu'à un flasque long 1 est opposé un flasque court 4 de même que de l'autre côté le flasque long 3 est disposé en regard du flasque court 2.Figure 4 is an end view of the damper according to the invention We see that a long flange 1 is opposite a short flange 4 as on the other side the long flange 3 is arranged opposite the short flange 2.

L'amortisseur est ainsi parfaitement verrouillé sur les montants et, par sa nature élastique épouse les déformations des cordes et les ramène rapidement au repos.The shock absorber is thus perfectly locked on the uprights and, by its elastic nature, follows the deformations of the strings and quickly brings them to rest.

Il va de soi que de nombreuses variantes peuvent être apportées, notamment par substitution de moyens techniques équivalents, sans sortir pour cela du cadre de l'invention.It goes without saying that many variants can be made, in particular by substitution of equivalent technical means, without departing from the scope of the invention.

Claims (3)

Amortisseur de vibrations destiné à être monté sur le cordage d'une raquette de tennis constituant des montants parallèles à l'axe de la raquette et des travers perpendiculaires audit axe, caractérisé en ce qu'il est constitué par un corps oblong symétrique (10) dont la longueur est légèrement supérieure à la somme des distances d'au moins quatre montants centraux, présentant quatre rainures médianes centrales (7) et deux rainures médianes latérales (6) symétriques destinées à recevoir les montants (M) 1 ° vibration damper intended to be mounted on the string of a tennis racket constituting uprights parallel to the axis of the racket and crosspieces perpendicular to said axis, characterized in that it is constituted by a symmetrical oblong body ( 10) whose length is slightly greater than the sum of the distances of at least four central uprights, having four central central grooves (7) and two symmetrical lateral median grooves (6) intended to receive the uprights (M) Amortisseur de vibrations selon la revendication 1 caractérisé en ce qu'il comprend quatre flasques ( 1,2,3,4) respectivement longs et courts, reliés deux à deux par des plots (5) et définissant les rainures (6,7), un flasque long (1,3) étant opposé à un flasque court (2,4). 2 ° vibration damper according to claim 1 characterized in that it comprises four flanges (1,2,3,4) respectively long and short, connected in pairs by studs (5) and defining the grooves (6,7 ), a long flange (1,3) being opposed to a short flange (2,4). Amortisseur de vibrations selon la revendication 1 ou 2, caractérisé en ce qu'il est constitué en un matériau élastomère synthétique tel que du polyuréthane. 3 ° vibration damper according to claim 1 or 2, characterized in that it is made of a synthetic elastomeric material such as polyurethane.
EP94402008A 1993-09-10 1994-09-09 Vibration dampener for a tennis racket Withdrawn EP0642811A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9310767 1993-09-10
FR9310767A FR2709671B1 (en) 1993-09-10 1993-09-10 Vibration damper for tennis racket.

Publications (1)

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EP0642811A1 true EP0642811A1 (en) 1995-03-15

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EP94402008A Withdrawn EP0642811A1 (en) 1993-09-10 1994-09-09 Vibration dampener for a tennis racket

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FR (1) FR2709671B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2734732A1 (en) * 1995-06-02 1996-12-06 Bianchi Jean Claude Anti-vibration bar fixed to strings of tennis racket
FR2817482A1 (en) * 2000-12-06 2002-06-07 Jean Claude Bianchi Adjustable anti-vibration device for ball game racket comprises flexible element with cylindrical holes housing cords and slits for cord passage, radial openings give weakening allowing local stretching or compressing
WO2004020048A1 (en) 2002-08-09 2004-03-11 Head Technology Gmbh Damping device for a ball games racket
DE102006004850B3 (en) * 2006-02-02 2007-10-04 Head Technology Gmbh Damping device for ball game rackets

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554723A1 (en) * 1983-11-16 1985-05-17 Robaldo Aldo TENNIS RAQUETTE STRINGS VIBRATION DAMPING BUFFER
EP0465848A1 (en) * 1990-06-11 1992-01-15 Prince Sports Group, Inc. String vibration dampener for a tennis racquet
FR2666237A1 (en) * 1990-08-30 1992-03-06 Bianchi Jean Claude Antivibration device for a tennis racquet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554723A1 (en) * 1983-11-16 1985-05-17 Robaldo Aldo TENNIS RAQUETTE STRINGS VIBRATION DAMPING BUFFER
EP0465848A1 (en) * 1990-06-11 1992-01-15 Prince Sports Group, Inc. String vibration dampener for a tennis racquet
FR2666237A1 (en) * 1990-08-30 1992-03-06 Bianchi Jean Claude Antivibration device for a tennis racquet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"elastomer takes the strain for tennis players", ENGINEERING, vol. 231, no. 11, December 1991 (1991-12-01), LONDON, GB, pages 11 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2734732A1 (en) * 1995-06-02 1996-12-06 Bianchi Jean Claude Anti-vibration bar fixed to strings of tennis racket
FR2817482A1 (en) * 2000-12-06 2002-06-07 Jean Claude Bianchi Adjustable anti-vibration device for ball game racket comprises flexible element with cylindrical holes housing cords and slits for cord passage, radial openings give weakening allowing local stretching or compressing
WO2004020048A1 (en) 2002-08-09 2004-03-11 Head Technology Gmbh Damping device for a ball games racket
DE10236633B4 (en) * 2002-08-09 2013-02-28 Head Sport Ag Damping device for ball game rackets
DE102006004850B3 (en) * 2006-02-02 2007-10-04 Head Technology Gmbh Damping device for ball game rackets
US7572196B2 (en) 2006-02-02 2009-08-11 Head Technology Gmbh Dampening device for a racket

Also Published As

Publication number Publication date
FR2709671A1 (en) 1995-03-17
FR2709671B1 (en) 1995-11-24

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