EP0515586A1 - Procede de cordage de raquettes - Google Patents

Procede de cordage de raquettes

Info

Publication number
EP0515586A1
EP0515586A1 EP91918205A EP91918205A EP0515586A1 EP 0515586 A1 EP0515586 A1 EP 0515586A1 EP 91918205 A EP91918205 A EP 91918205A EP 91918205 A EP91918205 A EP 91918205A EP 0515586 A1 EP0515586 A1 EP 0515586A1
Authority
EP
European Patent Office
Prior art keywords
strings
cross
string
length
longest
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Withdrawn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
EP91918205A
Other languages
German (de)
English (en)
Inventor
Ulrich Kuhnel
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE4032745A external-priority patent/DE4032745A1/de
Application filed by Individual filed Critical Individual
Publication of EP0515586A1 publication Critical patent/EP0515586A1/fr
Withdrawn legal-status Critical Current

Links

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
    • A63B51/14—Arrangements for stringing, e.g. for controlling the tension of the strings during stringing

Definitions

  • the invention relates to a method for stringing rackets, the string bed of which has parallel longitudinal strings and cross strings parallel to one another, according to the preamble of claim 1.
  • the invention relates in particular to the stringing of tennis rackets, but can also be used for rackets of other sports, eg. B. on badminton rackets.
  • the method according to the invention serves to tension the stringing with an optimal tensile force for the sport to be practiced, regardless of the intended use and the construction of such rackets, for example when the stringing is carried out for the first time or when it has to be replaced.
  • the invention is explained in more detail below on the basis of its preferred application to the stringing of tennis rackets.
  • an oval frame attaches to the shaft of the racket, which is usually provided with a grip band, the base of which forms the so-called heart on the shaft.
  • the area enclosed by the frame is filled with the strings, the relevant lengths of the cross and longitudinal strings being understood as the clear distance between the frame boundaries over which the respective string lengths run.
  • the main strings are first introduced and tensioned with the required tensile force, whereupon the cross strings are braided and in turn tensioned.
  • the cross strings are braided and in turn tensioned.
  • the invention is based on the object of carrying out the stringing process, which is presupposed as previously known, in such a way that it leads to a stringing which largely and in any case avoids the inhomogeneities of the stringing bed as long as that during stringing on the longitudinal and Cross strings applied are retained.
  • the invention no longer starts from the individual wishes of the player with regard to the hardness of the string bed of a racket selected by him or for him, but rather sets the hardness of the string bed to the geometry of the strings Racquet based. According to the invention, this takes place over the longest longitudinal and transverse strings of the respective string bed.
  • the longest main string is decisive, the tensile force of which determines the tensile force of the longest cross string. This is calculated from the difference between the cross string length and the main string as a corresponding fraction of the tensile force of the main string.
  • the measure of the tensile force of the main string depends on its length in the given string bed. The longer the main string in question, the greater it is.
  • rackets of the same frame geometry are given the same hardness of their string bed by the method according to the invention, they are adapted to the player's personality via their other dimensions and properties, so that competition players in particular prefer strings to an inhomogeneous string bed according to the method according to the invention.
  • the friction-free pretensioning of the cross strings is ensured with the inverse assumed as known at the beginning, which is the subject of claim 2.
  • the tensile forces are given in stages, after where the string lengths are divided. These stages are selected according to claim 4 for the main and cross strings.
  • the drawing shows the reproduction of a racket (1) of conventional design required for a better understanding of the invention.
  • the free end of the shaft (1 ') carries a grip tape (2).
  • the racket heart (3) with the oval frame (4) is located above the shaft. Between the racket heart (3) and the head (5) of the frame (4) run the parallel main strings, one of which is labeled (6).
  • the geometry of the racket is given by the longest main string, which is designated in the figure with (7) and by the longest cross string, which is shown in the figure at (8).
  • LL indicates the dimensions of the longest longitudinal strings (7) in the different racket geometries on the abscissa in steps between 270 to 360 mm, while the dimensions of the longest cross strings (8) of the different geometries in mm on the ordinate are given in levels between 210 and 260.
  • the tensile forces are given on the abscissa in cpl. In the field, the tensile forces of the cross strings belonging to each stage of the longest main strings are also found in cpl.
  • the method according to the invention begins with the measurement of the frame (4). First the inside dimension of the main string (7) and the inside dimension of the cross string (8) are determined. Assuming the dimensions of the main string (7) are 297 mm and the dimension of the longest cross string is 230 mm, the value 300 is searched for on the abscissa in the numerical table and the uniform tensile force of 265 kpl is determined for the main strings . By going from the value 300 to the right to the measuring line 230 of the cross string in the number table, one finds the value 205 for the tensile force of the cross strings.
  • the tensile forces of the cross strings are on the one hand related to the length of the longest long side in each case and the one determined for this, to the string length, but otherwise also to the greatest cross string length specified by the frame geometry.
  • the insemination hardness is related to the respective frame geometry, i.e. this adjusted.
  • the inhomogeneities of the string bed are switched off by the control of the tensile forces of main and cross strings.
  • the main strings are tensioned with the determined tensile force.
  • the cross strings are then tensioned with the tensile force determined for these strings.
  • the result is a tension dependent on the individual length of the strings and thus hardness of the string bed (8 ') in which cross strings alternately overlap and underlap adjacent longitudinal strings.
  • the number table can form the basis of a digital Form computer that controls a string tensioner.

Landscapes

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

Abstract

Selon un procédé de cordage de raquettes dont la surface de frappe comprend des cordes longitudinales parallèles, dont la plus longue s'étend entre la tête de la raquette et le coeur du cadre, ainsi que des cordes transversales mutuellement parallèles entrelacées avec les cordes longitudinales, passant alternativement au-dessus et au-dessous de celles-ci, on tend premièrement les cordes longitunales puis on entrelace et on tend les cordes transversales. Afin d'obtenir une surface de frappe homogène, les cordes longitudinales sont tendues avec une force sélectionnée en fonction de la longueur de la plus longue corde entre la tête de la raquette et le cadre de la surface de frappe, la force de tension augmentant à mesure que la longueur de référence augmente, et on tend les cordes transversales avec un force de tension homogène qui augmente à mesure que la longueur des cordes transversales augmente, en fonction de la longueur de la plus longue corde transversale de la surface de frappe et de la longueur et de la force de tension de la plus longue corde située entre la tête de la raquette et le coeur du cadre, ce qui élimine le frottement des cordes transversales sur les cordes longitudinales aux points d'entrelacement de la surface de frappe.
EP91918205A 1990-10-16 1991-10-16 Procede de cordage de raquettes Withdrawn EP0515586A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4032745A DE4032745A1 (de) 1990-08-29 1990-10-16 Verfahren zum besaiten von schlaegern, deren saitenbett parallele laengssaiten und untereinander parallele quersaiten aufweist
DE4032745 1990-10-16

Publications (1)

Publication Number Publication Date
EP0515586A1 true EP0515586A1 (fr) 1992-12-02

Family

ID=6416349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91918205A Withdrawn EP0515586A1 (fr) 1990-10-16 1991-10-16 Procede de cordage de raquettes

Country Status (2)

Country Link
EP (1) EP0515586A1 (fr)
WO (1) WO1992006748A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4201144A1 (de) * 1992-01-17 1993-07-22 Ulrich Kuehnel Verfahren und vorrichtung zur bestimmung der zugkraefte zum besaiten von schlaegern
JP2002537069A (ja) 1999-02-23 2002-11-05 ファーソン メジカル インク． 損傷の治療方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196901B1 (en) * 1977-03-07 1998-05-26 Enoch J Durbin Tennis racquet
DE3279456D1 (en) * 1982-04-29 1989-03-30 Soong Tsai C String load apportioned racket
DE9016980U1 (fr) * 1990-12-17 1991-03-07 Korte-Jungermann, Hans-Werner, 4156 Willich, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9206748A1 *

Also Published As

Publication number Publication date
WO1992006748A1 (fr) 1992-04-30

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Designated state(s): ES FR GB IT

17P Request for examination filed

Effective date: 19921026

17Q First examination report despatched

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19950503