EP0589906B1 - Raquette de tennis, de squash ou autre - Google Patents

Raquette de tennis, de squash ou autre Download PDF

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Publication number
EP0589906B1
EP0589906B1 EP92909971A EP92909971A EP0589906B1 EP 0589906 B1 EP0589906 B1 EP 0589906B1 EP 92909971 A EP92909971 A EP 92909971A EP 92909971 A EP92909971 A EP 92909971A EP 0589906 B1 EP0589906 B1 EP 0589906B1
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EP
European Patent Office
Prior art keywords
strings
primary
string
frame
sections
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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.)
Expired - Lifetime
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EP92909971A
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German (de)
English (en)
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EP0589906A1 (fr
Inventor
Herwig Fischer
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Individual
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Individual
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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
    • A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings
    • A63B51/12—Devices arranged in or on the racket for adjusting the tension of the strings

Definitions

  • the invention relates to a tennis, squash, racquetball or other racket with an essentially elliptical frame, a handle connected to this and a string arranged within the frame head, consisting of strings crossing one another, which several deflected on the frame with low friction and stretched over the frame Include strings with substantially parallel string sections, the stringing being connected to a tensioning device which exerts an adjustable tensile force on the strings, a part of the string sections guided through the frame head being directly connected to the tensioning device as primary string sections.
  • the tensioning device integrated in a ball racket should make it possible to change the string tension and adapt it to individual needs.
  • rackets are known for example from US-A-2 089 118, US-A-2 206 548, US-A-2 165 701 and EP 0 108 150 A.
  • the strings, or part of the strings, should be extended beyond the striking surface and guided up to the handle or at another suitable point in such a way that the tensioning device arranged there exerts a tensile force on the strings and enables adjustment of the string tension.
  • the rackets according to the aforementioned publications show different stringing patterns.
  • the stringing pattern is selected such that at least part of the stringing means that the immediately adjacent string sections belong to different strings and that the distance between the parallel string sections belonging to the same string is at least about a ball radius.
  • a racket of the type mentioned is known, for example, from US-A 21 65 701, but all primary strings are guided there in the direction of the longitudinal axis of the handle or parallel thereto, while the secondary strings are, without exception, stretched perpendicularly to this.
  • This stringing pattern results in string sections of different lengths, each with a different string tension, with the result that neither a stabilized head shape nor even an approximately uniform tension can be achieved.
  • strings consisting of primary string sections and respective sections connected beyond the striking surface with additionally fixed diagonally or orthogonally stretched strings between the frame points or of a primary and a secondary, namely only indirectly via the primary string sections with the
  • the string section connected to the tensioning device and the respective sections, which are extended beyond the striking surface and connect the primary and secondary sections to one another or to the tensioning device, are of essentially the same length, so that the tension when the tensioning device is actuated is approximately the same and in the same amount is changed.
  • the different strings representing the strings are each of the same length.
  • the strings of the string sections that are guided along the frame are each as short as possible, i.e. the string is led from a first hole into the hole next to it.
  • This keeps the elasticity of the string guide on the frame small.
  • this string guide has the effect that when the ball hits the strings which are adjacent to one another and which are connected to one another, so that a tension exchange with further additional elasticity (via other strings) does not take place.
  • the primary and secondary string sections or the primary string sections and fixed strings are arranged that an impacting ball touches essentially the same number of primary and secondary strings at all points on the face of the frame head.
  • a string guide is selected, which leads to a tensioning mechanism along the frame along the handle in the handle, but the jump of the connected strings by at least one ball radius is dispensed with and, on the contrary, the string guide is designed so that the ball strikes touches as many primary and secondary strings as possible in all areas of the face.
  • At least some of the primary and secondary string sections are arranged next to one another in an alternating sequence.
  • at least some of the primary string sections can also be arranged in such a way that two primary string sections lie alternately with two secondary string sections.
  • the racket preferably has a diagonal or orthogonal stringing pattern.
  • the string guide of the right side of the frame head is displaced to the left-hand side in such a way that crosslinking points result on the longitudinal axis of the racket, which are formed from a primary and a secondary string section.
  • the distance between two strings lying next to one another in parallel is preferably about 1/4 of the ball diameter.
  • the angle of the string guide in the racket head in relation to the head shape is selected so that in the racket head area of the frame, with essentially all set tensions, the force curves at essentially all deflection points in the frame have no resultants which change the head geometry of the racket, i.e. the head shape is longer , wider or otherwise deformed. In other words, bending stresses, which can cause the frame head to be deformed, are avoided.
  • the tensioning device is arranged in the handle so as to be longitudinally displaceable.
  • a string guide is selected in which the string sections extending beyond the frame surface are guided into the handle along the outer surface of the frame, where they are fastened to the tensioning device mentioned.
  • the number of string sections which are guided in the handle and connected to the tensioning device is preferably greater than 10, preferably at least 14 and less than 36, preferably at most 28.
  • an optimal string density of the stringing is achieved, which ensures that an impacting ball is seen in each stringing direction, hits multiple primary strings to allow for controlled ball control.
  • the number of string sections to be handled as a string tree is limited to a maximum.
  • the string density in the playing surface can also be increased independently of the number of (primary and secondary) strings being handled by additionally tensioning string sections in the playing surface that are not connected to the tensioning device.
  • These additional fixed strings which are stretched diagonally or orthogonally between two frame points are drawn in and stretched in the conventional manner using known aids.
  • the fixed strings will preferably be arranged in the outer edge zone, so that a ball hitting the racket hits the centrally arranged tensionable primary and secondary string sections in the majority of the strikes.
  • the number of fixed strings can be increased to such an extent that only primary string sections are required.
  • the arrangement of the fixed and the tensionable strings is also chosen such that the tensionable strings preferably run through the center of the face and the fixed strings lie in the edge zone.
  • a further limitation of the elasticity of the stringing can be achieved according to a further development of the invention in that a viscoelastic material is arranged between the string sections guided on or over the frame and / or in the handle.
  • a polymer plastic, preferably polyurethane, is particularly suitable for this purpose.
  • a viscoelastic material refers to substances whose elasticity behavior is different in the case of brief abrupt movement sequences than in the case of longer influences.
  • the viscoelasticity of the intermediate layers which can also be designed as sleeves for string sections, means that a tennis ball occurring during a stroke does not result in a relative movement of the string section or sections in question with the intermediate layer, and on the other hand, the string slips easily when tensioned thereon is possible, so that overall the impact behavior of the racket according to the invention is even "harder, more direct”.
  • the tennis racket shown in the figures has a handle 10 and a frame 11.
  • the handle is hollow and has a tensioning device, not shown.
  • the basic structure of a tennis racket with a tensioning device is known from the prior art, so that reference is made to EP 0 106 850 A, for example.
  • Both tennis rackets shown in Fig. 1 and 2 have a diagonal stringing pattern, which is formed by 2 x 4 strings.
  • the ends of the strings 12 to 19 are each firmly connected to the tensioning device.
  • the connection points of the string 12 are denoted by a and b.
  • the string 12 guided by the clamping end a on the tensioning device in the handle 10 along the frame is passed through a bore in the frame 11 and forms a primary string section 121, since it is directly connected to the tensioning device.
  • the string section 121 ends at an opposite bore in the frame 11, where the string 12 is guided along the frame as a short string section piece 122 to pass into the adjacent bore to run and form the secondary string section 123.
  • the string is again guided through a bore in the frame 11, where it is guided along the frame to form a short string section 124, again projecting through a bore, whereupon the string 12 continues as a further secondary string section 125 to the opposite end.
  • a further short string section 126 the string section 127 finally runs back to the clamping end b on the tensioning device.
  • the strings 127 and 121 thus form primary string sections, the string sections 123 and 125 secondary.
  • the string sections 122, 124 and 126 are chosen as short as possible in order to obtain a minimum of elasticity from the relevant sections.
  • the string 13 is guided starting from the clamping point c to the other clamping point d;
  • the strings 14 to 19 In the course of the string 19, the primary string sections are designated 191 and 194, whereas the string sections 192 and 193 represent secondary string sections. If a ball now strikes in the area in which the strings 19 and 12 intersect several times over their string sections, the ball touches two primary string sections 191 and 194 as well as 121 and 127, which essentially determine the restoring force and thus the ball trajectory. The same applies accordingly when the ball strikes at other locations, where it touches two pairs of primary strings arranged in a crossed manner. The striking behavior is essentially constant over the entire stringing, ie regardless of the impact of the ball.
  • the guidance of the strings 12 to 19 is selected so that there is an asymmetrical stringing pattern with respect to the racket longitudinal axis 20 on the right and left.
  • this axis 20 there are respective crossing points of primary and secondary strings, but no crossing points of primary strings.
  • String sections running parallel to each other alternately represent secondary and primary string sections.
  • pairs of primary string sections and secondary string sections lie in alternating sequence next to each other, which is clear from the example of the primary string sections 251 and 252 and the secondary string sections 253 and 254.
  • an arrangement of the primary and secondary strings which is symmetrical to the longitudinal axis 20 or - analogously to FIG. 1 - can be selected.
  • a PUR intermediate layer is arranged, which allows the string sections to slide against each other and relative to the intermediate layer and relative to the frame or handle when tensioned, but in the event of brief force influence, such as a blow, the relative movement in question is blocked.
  • fixed strings 30 tensioned according to conventional methods can also be provided in the edge zone between two frame points 31 and 32.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)

Abstract

La présente invention concerne un système pour corder des raquettes à cordes, par exemple des raquettes de tennis dont la tension des cordes est réglable, avec lequel une partie des cordes est reliée, en tant que sections de cordage primaires, au mécanisme de tension, tandis que l'autre partie n'est reliée qu'indirectement, en tant que sections de cordage secondaires, au mécanisme de tension par l'intermédiaire des sections de cordage primaires. Du fait de la disposition des sections de cordage primaires et secondaires, la balle rencontre toujours le même nombre de sections de cordage primaires ou secondaires dans toutes les zones du tamis.

Claims (9)

  1. Raquette de tennis, raquette pour squash, racquetball, où bien toutes autres sortes de raquettes avec un cadre essentiellement elliptique (11), relié avec ce manche (10), et au dedans de la tête du cadre est un cordage sous ordonné de cordes croisées (13 à 19, 22 à 25), dont la pluspart au cadre (11) par un léger frottement des cordes tendues (12 à 19, 22 à 25) et enroulées qui vont au-delà tout au long du manche (11), qui comprènnent des sections de cordes essentiellemen parallèles (121, 123, 125, 127; 191 à 194; 251 à 254), d'ou l'accordement avec une des force de traction réglable sur les cordes, est en relation et pratiquée sur la direction de tension; d'ou une partie par lequel à l'entête du cadre proviènnent directement des sections de cordes comme première section de cordes (121, 127; 191, 194; 251, 252), qui est relié à la direction de tension (a à y),
    PAR CE MOYEN CARACTERISTIQUE,
    que pour l'essentiel toute la longueur des cordes (12 à 19), composées comme section primaire enroulées, que dès sur la surface de frappe et par la section reliée par un suplément entre les joints du cadre diagonales òu orthogonales de cordes tendues et fixées (30) òu bien d'une primaire (121) et une secondaire, sôit seulement indirect part la section primaire des cordes avec la direction de tension relié aux sections de cordes qui proviennent du long du manche (123, 125) ainsi que les sections respectives (122, 124, 126), qui sur la surface de frappe au-delà prolongée soient entre-elles des sections et primaires et secondaires avec selon le cas reliées à la direction de tension, que pour l'essentiel elles soient de la même longueur, et que la section de cordes primaire et la section de cordes secondaire soient ainsi sousordonnées, qu'une balle qui frappe dans tous les points de la surface de frappe de l'entête du cadre touche des cordes en même tant primaire que secondaire òu fixées.
  2. Les raquettes d'aprés la revendication 1, par ce moyen caracteristique, qu'au minimum une partie des sections de cordes primaire et secondaire (121,127; 123, 125) soient sous ordonnées alternativement d'une suite l'une à côté de l'autre, ou qu'au minimum une partie des sections de cordes primaires (251, 252) soient ainsi sous ordonnées que toujours deux sections de cordes primaires (251, 252) soient placé dans une suite alternative respectivement à deux sections de cordes secondaires (253, 254).
  3. Les raquettes d'aprés la revendication 1 ou 2, par ce moyen caracteristique, que les raquettes montrent avec un modèle de cordage en diagonale ou orthogonale, cependant que par le modèle d'attelage diagonale des cordes conductrices du côté droit à l'entête du cadre soient ainsi répartie aux cordes de gauche correspendantes, qu'elles donnent sur la plus grande partie de l'axe de la raquette (20) des points de rencontre, qui forment et transmettent des sections de cordes primaire et secondaire.
  4. Les raquettes d'aprés la revendication 1 à 3, par ce moyen caracteristique, que la tension des sections des cordes par la mise en action de la direction de tension sera modifiée d'une facon à peu près semblable et d'un montant à peu prés semblable.
  5. Les raquettes d'aprés la revendication 1 à 4, par ce moyen caracteristique, que par une partie du cordage au moins la distance de deux cordes paralleles posées l'une à côté de l'autre (121, 123....; 191 à 194; 251 à 254) comprènnent à peu près un quart du diamètre de la balle et ou que l'angle (a) des cordes conductrices à l'entête de la raquette soit choisie en relation de la forme de tête, qu'au domaine de l'entête de raquette du cadre (11) par l'essentielle dans toutes mises au point de la tension de déroulement d'energie, dont fondamentalement dans tous les points qui détournent dans le cadre (11) ne montrent pas une resolvante, qui modifie la tête géométrique des raquettes, donc la forme de tête se laisse déformer ainsi en longueur ou en largeur, ou autre.
  6. Les raquettes d'aprés la revendication de 1 à 5, par ce moyen caractéristique que la direction de tension par un moyen réglable en long dans le manche (10) soit sous ordonnée, et òu bien, que les sections de cordes qui traversent la surface du cadre allant tout au long, au dehors de la surface du cadre (11) dans le manche (10), cependant que le nombre des parties de cordes qui dans le manche (10) et soient reliées avec le mechanisme de tension, soit plus grand que 10, de préfèrence au moins de 14 et plus tetit que 36, de préfèrence soit au plus haut de 28.
  7. Les raquettes d'aprés la revendication de 1 à 6, par ce moyen caracteristique qu'entre òu dans le cadre(11) et òu dans le long du manche (10) qui conduit les parties de cordes soit d'un materiel visqueux élastique, de préférence polymère, surtout specialement polyuthamie.
  8. Les raquettes d'aprés la revendication de 1 à 7, par ce moyen caractéristique, que les cordes suplémentaires soient ordonnées à l'exterieure au bord du cadre, cependant qu'elles soient de préférence simplement fixées au bord, et les cordes tendues dans le milieux de la raquette soient sous ordonnées simplement comme cordes primaire et secondaire.
  9. Les raquettes d'aprés la revendication 1 à 8, par ce moyen caracteristique, que dans l'exterieur au bord de la zone soient seulement des cordes fixées (30) et dans le milieu de la raquette soient seulement sous ordonnées de préférence comme cordes primaires.
EP92909971A 1991-05-21 1992-05-12 Raquette de tennis, de squash ou autre Expired - Lifetime EP0589906B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4116472 1991-05-21
DE4116472 1991-05-21
DE4134566A DE4134566A1 (de) 1991-05-21 1991-10-19 Tennis-, squash-, racquetball- oder anderer schlaeger
DE4134566 1991-10-19
PCT/DE1992/000398 WO1992020410A1 (fr) 1991-05-21 1992-05-12 Raquette de tennis, de squash ou autre

Publications (2)

Publication Number Publication Date
EP0589906A1 EP0589906A1 (fr) 1994-04-06
EP0589906B1 true EP0589906B1 (fr) 1995-03-15

Family

ID=25903768

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EP92909971A Expired - Lifetime EP0589906B1 (fr) 1991-05-21 1992-05-12 Raquette de tennis, de squash ou autre

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EP (1) EP0589906B1 (fr)
DE (2) DE4134566A1 (fr)
WO (1) WO1992020410A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6811502B1 (en) * 2003-04-30 2004-11-02 Wilson Sporting Goods Co. Racquet with elongated peripheral main string segments and enlarged sweet spot

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106850A1 (fr) * 1982-03-30 1984-05-02 Herwig Fischer Raquette de tennis ou de squash.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2165701A (en) * 1938-11-26 1939-07-11 Goerke Henry Racket
DE3211738A1 (de) * 1982-03-30 1983-10-06 Herwig Fischer Tennisschlaeger

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106850A1 (fr) * 1982-03-30 1984-05-02 Herwig Fischer Raquette de tennis ou de squash.

Also Published As

Publication number Publication date
DE4134566A1 (de) 1992-11-26
WO1992020410A1 (fr) 1992-11-26
EP0589906A1 (fr) 1994-04-06
DE59201678D1 (de) 1995-04-20

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