EP1154822B1 - Raquette pour jeu de balle - Google Patents

Raquette pour jeu de balle Download PDF

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Publication number
EP1154822B1
EP1154822B1 EP00907599A EP00907599A EP1154822B1 EP 1154822 B1 EP1154822 B1 EP 1154822B1 EP 00907599 A EP00907599 A EP 00907599A EP 00907599 A EP00907599 A EP 00907599A EP 1154822 B1 EP1154822 B1 EP 1154822B1
Authority
EP
European Patent Office
Prior art keywords
strings
racket
string
longitudinal
intermediate elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00907599A
Other languages
German (de)
English (en)
Other versions
EP1154822A1 (fr
Inventor
Horst Kirschbaum
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.)
Kirschbaum Sportartikel GmbH
Original Assignee
Kirschbaum Sportartikel GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kirschbaum Sportartikel GmbH filed Critical Kirschbaum Sportartikel GmbH
Publication of EP1154822A1 publication Critical patent/EP1154822A1/fr
Application granted granted Critical
Publication of EP1154822B1 publication Critical patent/EP1154822B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings
    • A63B51/02—Strings; String substitutes; Products applied on strings, e.g. for protection against humidity or wear
    • 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
    • A63B51/10—Reinforcements for stringing
    • A63B51/11—Intermediate members for the cross-points of the strings

Definitions

  • the invention relates to a ball game racket, especially tennis rackets, with several longitudinal strings and a plurality of perpendicular to the longitudinal strings arranged substantially vertically Cross strings, with the main strings with the cross strings Forming crossing points and at least one part the crossing points between a respective longitudinal string and a respective cross string secured against falling out, elastic intermediate members are provided.
  • Such a ball game racket is known from DE-OS 2654896 known.
  • the focus of this document is the task intersecting transverse and longitudinal strings of a ballgame racquet to block at the crossing points, so that the strings can not move against each other.
  • These described intermediate links should be made of rigid or semi-rigid Material, preferably of a plastic, such as Polyacethal or polyamide resin, but also of a metal consist. It also addresses the possibility that the Intermediate links store and return elastic energy can.
  • the intermediate links are essentially fully cylindrical shaped and have a diameter of 3 to 4 mm. To accommodate the strings grooves are provided whose bottoms should have a distance to each other between 0 and 0.4 mm.
  • the tennis racket described in the document has a natural gut string, which is the preferred one Material for playing tennis acts as natural gut has an elastic elongation of 25% and over a prolonged period no material fatigue shows. Natural gut strings are very expensive, so that they significantly increase the purchase price of a tennis racket.
  • FR-A-721 797 describes platelets of elastic material, the elasticity of a tennis racket stringing in which the tiles at the crossing points the clothing in each case between a longitudinal and a Cross string of the covering to be inserted. The tiles are after insertion by the exerted by the fabric Pressure almost completely compressed, so that they can not act as an effective spring element. something similar applies to the elastic described in FR-A-786 619 Platelets, which may be made of rubber, for example, and at the crossroads of a tennis string made of metal are arranged.
  • FR-A-2208689 and DE-A-29 22 631 describe intermediate links, as the protective particles for each used Tennis string serve, whereby an influence of the Game characteristics of tennis racket stringing not desired is.
  • US-A-4,168,065 shows a tennis racket cover arranged at the crossing points spacer particles, the provide a concave surface shape of the clubface.
  • Refer to the intended changes in the game characteristics focus on the simplification of, for example, top spin or side-spin punches.
  • the invention is therefore based on the object, a ball game rackets to create that in its playing characteristics is variable and those of a tennis racket with strings from natural intestine waiving the material natural gut as close as possible or even better.
  • the longitudinal strings and the cross strings a material whose elastic elongation does not exceed 15% is limited, come according to the invention materials for the Strings in question, the generally lower fatigue by continuous use of the ball game racket show than hitherto usual materials for Ballspielellersaiten. So is the elastic strain at Nylon® strings at 28%, while the elastic elongation at Polyester strings is between about 15% and 25%. Opposite come in accordance with the invention also string materials Question that has not been considered in ball game rackets been drawn. In particular, steel strings, Aramid fibers with an elastic elongation of about 4% and Kevlar® strings are used. Preferably, the Cross strings and the longitudinal strings, however, from combinverstrecktem Polyester with an elastic elongation in the range of 8 to 12%.
  • the number of intermediate links to be provided is preferred evenly distributed over the longitudinal and transverse strings, depends on the desired elasticity of the fabric. Basically, the elastic compression of the intermediate links with decreasing elastic elongation of the Increase strings.
  • the intermediate links act like spring elements, by the impact of a ball on the fabric be compressed and then their stored return elastic energy to the ball again.
  • Prefers are at least 20% of the crossing points with the pontics fitted.
  • the clothing can also be 50% and even 95% of the Intersection points be equipped with pontics. Around the playing characteristics of a natural gut string especially close or surpass these, the proportion of with intersections equipped intersections so high be as possible.
  • the intermediate links may be made of polyurethane, for example or rubber. Basically, however, each one is Material conceivable that meets the requirements of the elastic Compression met. There are also intermediate links conceivable, the consist of several components, one of which as a spring element is trained. The materials polyurethane and However, rubber is characterized by the fact that they are durable are claimable, without fatigue demonstrate. It should be noted that the intermediate links over the life of a commercial example Tennis string can only be used for about 10 minutes.
  • the elastic compression of the intermediate links at a pressure of 22 N / mm 2 is between 40 and 70%, particularly preferably between 50 and 60%. It has been shown that a length of a full polyurethane material cylinder of 0.8 to 1.2 mm with a diameter between 1.5 and 2 mm is particularly favorable.
  • the intermediate links preferably each have a groove for Recording of the longitudinal or transverse string.
  • the groove can be in their shape adapted to that of a standard tennis string which has a diameter of 1.0 to 1.4, preferably from 1.1 to 1.2 mm, has.
  • the intermediate links have one in their middle area Cross section, which is larger than the cross section of Intermediate links on the front strings is. That way the middle region of the intermediate links an increased spring force, the relevant for the elasticity of the intermediate member is.
  • the elastic intermediate links now make it possible to to provide a racquet clothing, which meets the two conflicting requirements, both weak and heavy use to provide adequate elasticity behavior. This is made by a covering with an even relatively inelastic String achieved, with low impact by the elastic intermediate links a satisfactory Elasticity is achieved. For the soulful tennis game So these intermediate links take over most of the rebound forces, because at the low stress the relatively inelastic string not very much extended, but by the compression of the spring elements as a whole nevertheless a high elasticity is achieved.
  • the rebound forces are by choosing the hardness of the intermediate links (for example, by the shape or the material) adjustable. The rebound forces can be applied almost without fatigue be, as a short compressive stress the material is not as much harms as a permanent tensile load and even after a long game a total of only a very short Loading time arises.
  • Particularly advantageous is the arrangement of the intermediate links in the edge area of the racket, which makes a very good Damping of the vibrations is achieved over the Frame to be transferred to the striking arm. An attenuation These vibrations have a significant effect on education a tennis elbow caused by the vibrations opposite.
  • an intermediate member 1 for a string crossing the stringing of a tennis racket made of harnessverstrecktem Polyester with an elastic elongation of 10% Between crossing strings (not shown) is the intermediate member 1, made of polyurethane material is made.
  • the two ends 2, 3 of the intermediate member 1 are formed as groove-shaped brackets that each other are arranged at a 90 ° angle and crossing each other Partially surround strings.
  • a block 4 is arranged polyurethane material.
  • This block 4 is referred to herein as a "spring element", because he is mainly for the cushioning of the strings caused against each other at a compressive stress by the elongation of the strings, is responsible.
  • the entire intermediate member in one piece from the resilient polyurethane material finds part of the suspension also in the area of brackets.
  • Fig. 1 In the known embodiment of an intermediate member shown in Fig. 1 is the Spring element designed as a cube of approx. 1-2 mm edge length.
  • the brackets are elongated half shells, the two sides protrude beyond the spring element.
  • Fig. 2 is an alternative embodiment of an intermediate member 5 shown from the prior art.
  • the spring element as Cuboid of about 1.5 mm in length and a base of approx. 1.2 x 1.2 mm executed.
  • the attached to the strings cup-shaped Brackets close flush with the spring element from.
  • FIG. 3 shows the intermediate member 5 from FIG. 2, whereby by impact the two strings on each other are pressed. This can happen on the one hand that the string crossing is hit directly by the ball and so on the superimposed strings are pressed together.
  • Besaitung see Fig. 4
  • FIG. 3 shows the intermediate member 5 from FIG. 2, whereby by impact the two strings on each other are pressed. This can happen on the one hand that the string crossing is hit directly by the ball and so on the superimposed strings are pressed together.
  • Besaitung see Fig. 4 spreads a such compressive stress over the entire surface of the clothing, so that even at such string crossings compressive forces arising from the point of impact of the ball lie.
  • the fabric is formed from a relatively inelastic, otherwise unusable string, For example, a steel side or a plastic string made of highly stretched polyester (polyethylene terephthalate).
  • a relatively low tensile force become the intermediate links 5 already described some string crossings inserted into the fabric. hereby results in a greater clamping force, because the intermediate links have a longitudinal extent of 0.5 to 2.5 mm.
  • the subsequent introduction of these intermediate links at some (eg 20) string crossings the Hardness of the clothing subsequently increased. coverings, already some of their elasticity by extension may have lost the strings under stress, so by subsequent insertion of the intermediate links again get an increased stringing hardness and already lost Regain elasticity.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Laminated Bodies (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Claims (7)

  1. Raquette pour jeu de balle, en particulier raquette de tennis, avec plusieurs cordes longitudinales et plusieurs cordes transversales placées substantiellement perpendiculairement aux cordes longitudinales, les cordes longitudinales formant des points d'intersection avec les cordes transversales et des éléments intermédiaires élastiques bloqués pour ne pas tomber étant prévus au moins sur une partie des points d'intersection entre une corde longitudinale respective et une corde transversale respective,
    caractérisée en ce que
    les cordes longitudinales et les cordes transversales sont en une matière qui présente un allongement élastique en longueur de 15 % maximum,
    les éléments intermédiaires (1 ; 5 ; 7) présentent en direction d'une corde transversale respective vers une corde longitudinale respective un refoulement élastique qui est d'au moins 20 % pour une pression de 22 N/mm2,
    les éléments intermédiaires (1 ; 5 ; 7) présentent une hauteur totale de 0,5 à 2,5 mm et
    les éléments intermédiaires (7) présentent une section dans leur zone centrale qui est plus grande que la section des éléments intermédiaires (7) sur les côtés de face.
  2. Raquette pour jeu de balle selon la revendication 1, caractérisée en ce que les cordes transversales et les cordes longitudinales sont constituées par du polyester fortement étiré avec un allongement élastique de l'ordre de 8 à 12 %.
  3. Raquette pour jeu de balle selon l'une des revendications 1 ou 2, caractérisée en ce qu'au moins 20 %, de préférence au moins 50 % et en particulier au moins 95 % des points d'intersection sont équipés d'éléments intermédiaires (1 ; 5 ; 7).
  4. Raquette pour jeu de balle selon l'une des revendications 1 à 3, caractérisée en ce que les éléments intermédiaires (1 ; 5 ; 7) sont constitués par du polyuréthane ou du caoutchouc.
  5. Raquette pour jeu de balle selon l'une des revendications 1 à 4, caractérisée en ce que le refoulement élastique des éléments intermédiaires (1 ; 5 ; 7) se situe entre 40 et 70 % pour une pression de 22 N/mm2.
  6. Raquette pour jeu de balle selon la revendication 5, caractérisée en ce que le refoulement élastique des éléments intermédiaires (1 ; 5 ; 7) se situe entre 50 et 60 % pour une pression de 22 N/mm2.
  7. Raquette pour jeu de balle selon l'une des revendications 1 à 6, caractérisée en ce que les côtés de face des éléments intermédiaires (1 ; 5) qui sont tournés vers une corde longitudinale ou une corde transversale présentent respectivement une rainure pour loger la corde longitudinale ou la corde transversale.
EP00907599A 1999-02-22 2000-02-22 Raquette pour jeu de balle Expired - Lifetime EP1154822B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19907291 1999-02-22
DE19907291 1999-02-22
PCT/EP2000/001448 WO2000050126A1 (fr) 1999-02-22 2000-02-22 Raquette pour jeu de balle

Publications (2)

Publication Number Publication Date
EP1154822A1 EP1154822A1 (fr) 2001-11-21
EP1154822B1 true EP1154822B1 (fr) 2005-12-28

Family

ID=7898253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00907599A Expired - Lifetime EP1154822B1 (fr) 1999-02-22 2000-02-22 Raquette pour jeu de balle

Country Status (4)

Country Link
EP (1) EP1154822B1 (fr)
AU (1) AU2913300A (fr)
DE (1) DE50011973D1 (fr)
WO (1) WO2000050126A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4265303A1 (fr) * 2022-04-22 2023-10-25 Wei-Jung Chen Dispositif capable de générer une onde de choc superposée

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109550202A (zh) * 2018-12-18 2019-04-02 邬惠林 一种羽毛球十字拍线垫

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR721797A (fr) * 1931-08-20 1932-03-08 Cales élastiques à interposer dans le réseau formé par les cordes des raquettes de tennis, et instrument pour réaliser cette opération
FR786619A (fr) * 1935-03-02 1935-09-06 Raquette de tennis à cadre métallique
CH570176A5 (fr) * 1972-12-01 1975-12-15 Dischinger Gebhard
CH607748A5 (fr) 1975-12-04 1978-10-31 Gibello Carlo Selcom Camsa S A
SE407152B (sv) * 1976-04-02 1979-03-19 Goransson Per Gunnar Magnus Rackett
JPS5519107A (en) * 1978-07-27 1980-02-09 Kureha Chemical Ind Co Ltd Gut and its preparation
DE2922631C2 (de) * 1979-06-02 1985-12-05 Werner 8313 Vilsbiburg Fischer Saitenschutzteilchen für eine Tennisschlägerbespannung
DE4305829C2 (de) * 1993-02-25 1995-10-12 Pielenz Flechtgarne Kg Saite sowie Verfahren zur Herstellung einer derartigen Saite
JP2826055B2 (ja) * 1993-12-27 1998-11-18 株式会社ゴーセン ラケット用ガット及びその製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4265303A1 (fr) * 2022-04-22 2023-10-25 Wei-Jung Chen Dispositif capable de générer une onde de choc superposée

Also Published As

Publication number Publication date
WO2000050126A1 (fr) 2000-08-31
DE50011973D1 (de) 2006-02-02
EP1154822A1 (fr) 2001-11-21
AU2913300A (en) 2000-09-14

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