EP0817662A1 - Raquette pour jeux de balle, notamment raquette de tennis ou de squash - Google Patents

Raquette pour jeux de balle, notamment raquette de tennis ou de squash

Info

Publication number
EP0817662A1
EP0817662A1 EP97914069A EP97914069A EP0817662A1 EP 0817662 A1 EP0817662 A1 EP 0817662A1 EP 97914069 A EP97914069 A EP 97914069A EP 97914069 A EP97914069 A EP 97914069A EP 0817662 A1 EP0817662 A1 EP 0817662A1
Authority
EP
European Patent Office
Prior art keywords
frame
frame part
string
racket
supported
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Withdrawn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
EP97914069A
Other languages
German (de)
English (en)
Inventor
Uwe Emig
Markus Gramlich
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.)
Geilsdorfer Reinhold
Original Assignee
Geilsdorfer Reinhold
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 Geilsdorfer Reinhold filed Critical Geilsdorfer Reinhold
Publication of EP0817662A1 publication Critical patent/EP0817662A1/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Withdrawn legal-status Critical Current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
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/022—String guides on frames, e.g. grommets
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations

Definitions

  • the invention relates to a racket for ball games, in particular a tennis or squash racket with a frame forming a racket head and a racket grip and with a covering formed by crossing string lengths, which is held on a frame part forming the racket head, the string lengths for their fastening through openings in the frame part and in an element supported on the frame part from the inside of the frame to the outside of the frame and through further openings in the frame part and in an element supported in the frame part are guided from the outside of the frame to the inside of the frame and for at least one String length at least one string attachment is designed such that this string length has mobility on the inside of the frame in a direction perpendicular to the stringing plane formed by the stringing.
  • a racket of the type specified is known from DE 42 03 682 AI.
  • the element which serves to secure the strings is designed as a sleeve which is made of a rubber-elastic material and is inserted into the two openings in the frame part in such a way that it rests with a web-like, widened section on the outside of the frame and with it sleeve-like, the part length of the string that is carried out tightly enclosing is accommodated in the opening provided in the outside of the frame.
  • the opening in the inside of the frame is designed as an elongated hole extending perpendicular to the stringing plane, whereby in the area of this opening, the sleeve can be deflected together with the string length in a direction perpendicular to the stringing plane.
  • the object of the invention is to improve the game properties of a racket of the type mentioned at the outset and to allow the game properties to be more specifically adapted to different requirements.
  • At least one dimensionally stable element encompassing the movable string length in a sleeve-like manner is mounted with limited movement relative to the frame part in the radial direction to the longitudinal axis of the string length and is supported on a body which is in a recess in the frame part is arranged and consists of an elastomeric material deformable by movement of the element.
  • At least one, but preferably a plurality, of string attachments is designed such that the respective string lengths can perform a sufficient movement on the inside of the frame under the action of a ball striking the stringing of the racket, the magnitude of this movement as well the subsequent countermovement the body is controlled from elastomeric material.
  • the dynamic behavior of the covering can be significantly improved with the aid of the elastic body in the sense of an improvement in the playing properties, particularly with regard to ball control, and also the vibration behavior of the strings by coupling the movable elements to the elastomeric body have a lasting effect in the sense of a reduction in arm strain and an improvement in playing comfort. Due to the variation, size and shape of the movable element and the elastic properties of the elastomeric body, the racket according to the invention offers an additional possibility of adapting the playing properties to different requirements and reacting appropriately to different properties of string materials.
  • the racket according to the invention also has the advantage that the mobility of the strings on the inside of the frame for a given racket size results in an increase in the effective playing surface and a greater ball acceleration with better ball control at the same time.
  • the torsional stress on the club handle when the ball hits the edge of the effective striking surface is reduced, which leads to less stress on the wrist.
  • the so-called rebound shock is alleviated and, accordingly, the trampoline effect triggered by it is reduced, which in particular leads to less strain on the elbows.
  • the stiffness of the frame head is maintained by the inventive design of the racket in the longitudinal and transverse directions, so that there are no adverse influences for ball acceleration and ball control due to the load on the frame.
  • Swivel bearing is mounted on the frame part.
  • Another storage option according to the invention is that the element is embedded exclusively in the body made of elastomeric material and that there is a space on all sides between the element and the frame part. In this embodiment, the movable element is therefore not in direct contact with the frame part at any point.
  • connection can be designed as a rigid connection or as a movable connection.
  • two elements arranged on the common loop of two string lengths can be supported directly on one another. As a result, the forces which are endeavored to pull the loop together can be absorbed by the elements supported against one another and kept away from the frame part.
  • the string length is supported on the movable element in such a way that the tensile stress is transmitted to the frame part via the element and the body made of elastomeric material.
  • the transmission of string vibrations to the frame is particularly effectively reduced and the string attachment is additionally given mobility in the longitudinal direction of the string.
  • the inner contour of the frame part and the outer contour of the element can be matched to one another such that an intermediate space of approximately the same width is formed, in which the body made of elastomeric material is arranged.
  • the racket according to the invention can be produced in different ways. For example, that
  • Element are introduced into the frame part before the Frame receives its final shape, in which the element is permanently placed inside the frame part. Subsequent assembly of the element after completion of the frame can be achieved in a simple manner according to the invention in that the element consists of a sleeve surrounding the string length and a plate or disk with an opening into which the sleeve is inserted without play.
  • FIG. 1 shows a top view of a tennis racket
  • FIG. 2 shows a cross section through the tennis racket according to FIG. 1 along the line A-A of the tennis racket according to FIG. 1 and
  • FIG 3 shows a cross section through another embodiment of a string attachment according to the invention.
  • the tennis racket shown in Figure 1 consists of a loop-shaped frame 1, which is formed by a racket head 2 and a racket handle 3.
  • the oval ring of the club head 2 is closed by a heart bar 4, which is inserted into the frame 1 on the handle side.
  • a covering 5 of crossing string lengths 6, 7 is provided within the oval ring of the racket head 2.
  • the string lengths 6 run in parallel and the string lengths 7 run perpendicular to the longitudinal axis of the racket head 2.
  • the frame 1 is designed in the area of the club head 2 as a tubular hollow body which is made from a fiber-reinforced plastic material.
  • the frame 1 on its inside and on its outside openings 8, 9 through which the strings which form the covering 5 are each guided at one point from the inside out and at another point from the outside in, whereby loops are formed on the outside of the frame are held by the string lengths 6, 7 extending within the frame 1.
  • the middle string lengths 6, 7 lying in the area of the effective playing surface, the so-called sweet spot are guided at their fastening ends within the frame 1 by sleeve-shaped elements 10, which with their bore surround the fastening end of the respective string length 6, 7 with almost no play .
  • the elements 10 are made of a dimensionally stable plastic or metal.
  • the outer contour of the elements 10 is matched to the inner contour of the cavity within the frame 1, the outer dimensions of the elements 10 being considerably smaller than the inner dimensions of the cavity.
  • the cavity has a substantially oval cross-sectional shape within the club head 2.
  • the openings 8, 9 are arranged on the broad sides of the oval cross section. The transitions between the openings 8, 9 and the cavity are rounded.
  • the elements 10 have in their central region a thickening 11 which extends in the radial direction with respect to the sleeve bore.
  • a body 12 made of elastomeric material, which surrounds the elements 10 on all sides.
  • the elements 10 of adjacent string lengths 7 are supported on one another.
  • the elements 10 have at their ends extending in the longitudinal direction of the cavity short cylindrical projections 13 with which they abut one another.
  • the elements 10 can be installed in the frame 1 after they have been produced.
  • the elements 10 consist of a round disk 14 with a central through bore 15 and a sleeve 16 which can be inserted into the bore 15 from the outside through the opening 9 in the frame 1.
  • the sleeve 16 At its end lying on the outside of the frame, the sleeve 16 has a flange 17 with a bearing surface 18 in the form of a spherical section, which is mounted in a cylindrical bearing surface 19 on the outside of the frame.

Landscapes

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

Abstract

L'invention concerne une raquette de tennis comportant un cadre (1) qui forme la tête et un tamis formé de cordes (7) entrecroisées qui, pour être fixées, sont guidées à travers des ouvertures pratiquées dans une partie du cadre (2) et dans un élément qui s'appuie sur cette partie du cadre (2). Au moins une fixation prévue pour au moins une corde (7) se présente de manière que cette corde (7) comporte sur la face intérieure du cadre une mobilité dans un sens perpendiculaire au plan de tension des cordes formé par le tamis. Au moins un élément (10) indéformable qui entoure la corde (7) mobile à la manière d'un manchon est monté de sorte à se déplacer de manière limitée vis-à-vis de la partie de cadre (2) dans le sens radial par rapport à l'axe longitudinal de la corde (7). Cet élément (10) s'appuie sur un corps (12) disposé dans une cavité de la partie de cadre (2) et qui se compose d'un matériau élastomère déformable sous l'effet d'un mouvement de l'élément (10).
EP97914069A 1996-01-25 1997-01-18 Raquette pour jeux de balle, notamment raquette de tennis ou de squash Withdrawn EP0817662A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19602587 1996-01-25
DE19602587A DE19602587A1 (de) 1996-01-25 1996-01-25 Schläger für Ballspiele, insbesondere Tennis- oder Squashschläger
PCT/DE1997/000085 WO1997026951A1 (fr) 1996-01-25 1997-01-18 Raquette pour jeux de balle, notamment raquette de tennis ou de squash

Publications (1)

Publication Number Publication Date
EP0817662A1 true EP0817662A1 (fr) 1998-01-14

Family

ID=7783625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97914069A Withdrawn EP0817662A1 (fr) 1996-01-25 1997-01-18 Raquette pour jeux de balle, notamment raquette de tennis ou de squash

Country Status (4)

Country Link
US (1) US5890978A (fr)
EP (1) EP0817662A1 (fr)
DE (1) DE19602587A1 (fr)
WO (1) WO1997026951A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2820644B1 (fr) * 2001-02-12 2003-07-11 Babolat Vs Element de garniture d'un cadre de raquette, cadre de raquette pourvu d'au moins un tel element et raquette comprenant un tel cadre

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2116920A1 (de) * 1971-04-07 1972-10-19 Reinhold Sommer Ballschläger
US4204681A (en) * 1978-07-13 1980-05-27 Amf Incorporated Game ball racket wherein certain racket components are structurally integrated with the racket frame by the string with which the racket is strung
US4681319A (en) * 1978-10-05 1987-07-21 Gene Zilinskas Racket having unique string mount
US5014987A (en) * 1982-09-27 1991-05-14 Soong Tsai C Frame for sports racket
BE904333A (fr) * 1986-03-03 1986-06-30 Tsai Son Kung Raquette amelioree.
DE8624960U1 (fr) * 1986-09-18 1987-08-20 Korte-Jungermann, Hans-Werner, 4156 Willich, De
AT401877B (de) * 1990-02-21 1996-12-27 Scheruebl Franz Schwingungsgedämpfte racketausbildung
DE4110698A1 (de) * 1991-04-03 1992-10-08 Dragan Dipl Ing Milicic Tennisschlaeger mit schwimmend gelagerter beseitung
DE4203682C2 (de) * 1992-01-29 1994-06-23 Franz Voelkl Gmbh & Co Ski Ten Ballspielschläger, insbesondere Tennisschläger
US5257781A (en) * 1993-01-19 1993-11-02 Mitt Usa Corporation Retained rocker string sports racket
US5368297A (en) * 1993-11-29 1994-11-29 Liu; Leueis Racket frame and protective packing device arrangement
JPH07194741A (ja) * 1993-12-28 1995-08-01 Yamaha Corp ラケットフレーム及びその製法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9726951A1 *

Also Published As

Publication number Publication date
US5890978A (en) 1999-04-06
WO1997026951A1 (fr) 1997-07-31
DE19602587A1 (de) 1997-07-31

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