EP0241393B1 - Vorrichtung zum Dämpfen der Schwingungen einer Schlägerbespannung - Google Patents

Vorrichtung zum Dämpfen der Schwingungen einer Schlägerbespannung Download PDF

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Publication number
EP0241393B1
EP0241393B1 EP87420093A EP87420093A EP0241393B1 EP 0241393 B1 EP0241393 B1 EP 0241393B1 EP 87420093 A EP87420093 A EP 87420093A EP 87420093 A EP87420093 A EP 87420093A EP 0241393 B1 EP0241393 B1 EP 0241393B1
Authority
EP
European Patent Office
Prior art keywords
membrane
vibrations
absorbing
strings
racket
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
EP87420093A
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English (en)
French (fr)
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EP0241393A1 (de
Inventor
Dominique Deville
Gilles Du Gardin
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Skis Rossignol SA
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Skis Rossignol SA
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Filing date
Publication date
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Application filed by Skis Rossignol SA filed Critical Skis Rossignol SA
Publication of EP0241393A1 publication Critical patent/EP0241393A1/de
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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
    • 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
    • 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
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/028—Means for achieving greater mobility of the string bed

Definitions

  • the present invention relates to a racket provided with a device for damping the vibrations of its string, such as a tennis racket, squash racket, badminton racket, or the like.
  • a tennis racket or other generally consists of a handle held by the player, extended by a frame called a basket, of round or oval shape for example, itself carrying the sieve composed of longitudinal strings and transverse strings, forming the striking surface.
  • Each rope generally crosses the frame right through, passing inside a hole provided for this purpose.
  • the base of the basket located near the handle, generally forms a "bridge" supporting the central longitudinal cords.
  • the invention as presented according to the terms of claim 1 relates to a racket provided with a device for damping the vibrations of its stringing and the noise which results thereby making it possible to overcome this drawback.
  • this racket provided with a damping device, in which each rope passes through holes made in the frame structure, the device being constituted by at least one flexible elastomeric annular membrane, pierced with an orifice and fixed in at least one bore of at least the bridge part of the frame, is characterized in that each bore is delimited by a surface of revolution generated by a straight line, and in that the orifice of the membrane has a diameter less than that of the rope that crosses it.
  • the flexible annular membrane is fixed in a tubular part, called a barrel or an eyelet, itself passing through the bore and serving as a passage for the rope.
  • This tubular part is, in a manner known per se, intended to avoid cutting the rope.
  • a tennis racket 1 is composed of a handle 2, two branches 2b extended by a basket 3, the lower part 4 of which forms a "bridge” .
  • the frame 3 itself carries the "sieve” 5, composed of longitudinal strings 6 and transverse strings 7, forming the striking surface.
  • each rope is fixed to the basket 3 by passing through holes 8 in this frame, and more precisely in tubular parts 9, or “barrels", or eyelets, in polyamide for example, fixed in these holes.
  • a flexible annular membrane 10, made of elastomer for example is attached, glued or force fitted, in the barrels 9 relating to the longitudinal ropes 6, and at least in the central part of the bridge 4.
  • all the barrels 9 relating to the longitudinal strings 6, whatever they are, are each fitted with a membrane 10.
  • each membrane 10 has a diameter smaller than that of the cord. It is therefore strongly pinched by the membrane.
  • each membrane 10 is fixed towards the end of the barrel 9, that is to say of the bore 8, located towards the inside of the basket 3.
  • each membrane 10 can be produced at the same time as the associated barrel 9, by bi-injection, overmolding or any other process.
  • barrels 9 could be absent, in which case each membrane would be fixed directly in the corresponding bore 8, which would then have the same internal diameter as the barrel 9.
  • the barrels 9, each equipped with their membrane 10, can be produced individually, but, as shown in FIG. 2, they can also be produced in a single molding piece in groups of two or more.
  • the bridge 4 is equipped, in its main central part with four rope jumpers 11, molded in one piece and shaped as shown to allow passage to the longitudinal rope.
  • both the transverse and longitudinal cords stretched along the lateral parts of the basket 3 pass through successive barrels 9 which are formed by molding in one piece with a common strip 12, carrying said barrels, and fixed, as shown, in a groove 13 in the outer part of the basket 3.
  • FIG. 4 shows a barrel 9, equipped with its membrane 10, before passage of the associated cord.
  • the membrane 10 can have a double-entry cone shape.
  • FIG. 5 shows the same barrel 9, after passage and tension of the longitudinal rope 6. It can be seen that the membrane 10 is strongly deformed towards the inside of the racket and that, the central orifice 14 having been greatly enlarged by force by the passage of the cord 6, a permanent contact zone has been created between the membrane and the cord.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Vibration Dampers (AREA)
  • Vibration Prevention Devices (AREA)
  • Buffer Packaging (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Cereal-Derived Products (AREA)

Claims (7)

1. Schläger mit einer Vorrichtung zur Dämpfung der Vibrationen seiner Bespannung, bei welchem jede Saite Durchgänge (8) durchquert, die in dem Rahmengestell angeordnet sind, wobei die Vorrichtung durch wenigstens eine ringförmige, elastomer nachgiebige Membran (10) gebildet ist, die von einer Öffnung (14) durchsetzt ist und die in mindestens einem Durchgang wenigstens eines eine Brücke (4) bildenden Abschnitts des Rahmens angeordnet ist, dadurch gekennzeichnet, daß jeder Durchgang durch eine Rotationsfläche begrenzt ist, die durch eine Gerade erzeugt ist, und daß die Öffnung der Membran (10) einen kleineren Durchmesser als den Durchmesser der sie durchsetzenden Saite aufweist.
2. Schläger mit einer Vorrichtung zur Dämpfung der Vibrationen seiner Bespannung nach Anspruch 1, dadurch gekennzeichnet, daß die Membran in einem den Durchgang (8) durchsetzenden rohrförmigen Teil (9), wie z.B. einer Hülse oder einer Öse, angeordnet ist, welches dazu bestimmt ist, das Reißen der Saitenbespannung zu verhindern.
3. Schläger mit einer Vorrichtung zur Dämpfung der Vibrationen seiner Bespannung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Membran (10) gegen das Ende des Durchgangs hin angebracht ist, welches dem Inneren des Rahmens benachbart ist.
4. Schläger mit einer Vorrichtung zur Dämpfung der Vibrationen seiner Bespannung nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß die ringförmige Membran (10) an jeder Seite eine konische Öffnung mit einem gegen die Mitte kleiner werdenden Durchmesser zur Bildung eines doppelten Zuganges aufweist, um die Einbringung der Bespannung zu erleichtern.
5. Schläger mit einer Vorrichtung zur Dämpfung der Vibrationen seiner Bespannung nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß die Membran durch Kleben eingesetzt ist.
6. Schläger mit einer Vorrichtung zur Dämpfung der Vibrationen seiner Bespannung nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß die Membran kraftschlüssig eingesetzt ist.
7. Schläger mit einer Vorrichtung zur Dämpfung der Vibrationen seiner Bespannung nach Anspruch 2, dadurch gekennzeichnet, daß die Membran zugleich mit der Hülse (9) durch Zweifachspritzen oder Überformen hergestellt ist.
EP87420093A 1986-04-08 1987-04-07 Vorrichtung zum Dämpfen der Schwingungen einer Schlägerbespannung Expired - Lifetime EP0241393B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8605479A FR2596661B1 (fr) 1986-04-08 1986-04-08 Dispositif amortisseur de vibrations de cordage d'une raquette
FR8605479 1986-04-08

Publications (2)

Publication Number Publication Date
EP0241393A1 EP0241393A1 (de) 1987-10-14
EP0241393B1 true EP0241393B1 (de) 1990-08-16

Family

ID=9334312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420093A Expired - Lifetime EP0241393B1 (de) 1986-04-08 1987-04-07 Vorrichtung zum Dämpfen der Schwingungen einer Schlägerbespannung

Country Status (6)

Country Link
US (2) US4909511A (de)
EP (1) EP0241393B1 (de)
JP (1) JPS62295675A (de)
DE (2) DE3764293D1 (de)
ES (1) ES2016645B3 (de)
FR (1) FR2596661B1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0556163U (ja) * 1991-12-28 1993-07-27 ヤマハ株式会社 ラケットフレーム用ガット保護部材
ATE132381T1 (de) * 1992-01-29 1996-01-15 Voelkl Franz Ski Ballspielschläger, insbesondere tennisschläger
US5222998A (en) * 1992-01-31 1993-06-29 Ferrari Importing Company Device for facilitating application of variable tension to sports racquet stringing bed
US5409229A (en) * 1992-08-05 1995-04-25 Callaway Golf Company Golf club head with audible vibration attenuation
US5306004A (en) * 1992-11-12 1994-04-26 Soong Tsai C Sports rackets having all strings dampened for vibration
US5458331A (en) * 1994-07-22 1995-10-17 Bothwell; Brett P. Game racket with adjustable string suspension system
US5944624A (en) * 1996-12-23 1999-08-31 Prince Sports Group, Inc. Notched, slotted grommet for sports racquet
US5833560A (en) * 1997-03-19 1998-11-10 Prince Sports Group, Inc. Racquetball racquet
DE29708231U1 (de) * 1997-05-07 1997-07-24 Shaw, Ching-Song, Taichung Schläger mit einem Kopfrahmen mit Stoßdämpfungswirkung
US6132325A (en) * 1997-06-25 2000-10-17 Bertolotti; Fabio P Interlocking string network for sport rackets
US6506134B2 (en) 1997-06-25 2003-01-14 Fabio Paolo Bertolotti Interlocking string network for sports rackets
US6527656B1 (en) 2001-11-27 2003-03-04 Wilson Sporting Goods Co. Two-piece grommet assembly for a sports racquet
US6540626B1 (en) * 2002-04-03 2003-04-01 Steven Tsai Racket structure with ball-striking racket face
US6852048B1 (en) 2002-05-17 2005-02-08 Ef Composite Technologies, L.P. Guiding and vibration dampening string tubes for sports racquets
USD476386S1 (en) 2002-05-17 2003-06-24 Ef Composite Technologies, L.P. String-enclosing tubes for a sports racquet
US7097576B2 (en) * 2002-05-17 2006-08-29 Ef Composite Technologies, L.P. String bearing assemblies for sports racquets
TW540400U (en) * 2002-06-12 2003-07-01 Sung-Gung Tsai Shock-absorption structure for thread of racket
US6811502B1 (en) 2003-04-30 2004-11-02 Wilson Sporting Goods Co. Racquet with elongated peripheral main string segments and enlarged sweet spot
US9821197B2 (en) 2007-11-26 2017-11-21 Brett Bothwell System and method for a game racquet including a grommet actuator
US9320946B2 (en) 2007-11-26 2016-04-26 Brett Bothwell System and method for a game racquet including an actuator
US9132321B2 (en) 2007-11-26 2015-09-15 Brett Bothwell System and method for an inflation bladder composite game racket
US8834306B2 (en) 2011-07-20 2014-09-16 Ef Composite Technologies, L.P. Racquet with elongated grommet barrels
TWI814023B (zh) * 2021-01-28 2023-09-01 陳威融 球拍減震裝置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1697814A (en) * 1925-12-12 1929-01-01 Gen Motors Corp Grommet
US3567225A (en) * 1968-03-26 1971-03-02 Brancroft Racket Co Racket including string engaging elastomeric bushings and pads
DE2065888C3 (de) * 1969-08-28 1979-07-19 Amf Inc., White Plains, N.Y. (V.St.A.) Tennisschläger mit einem auf die Griffenden aufgebrachten Griff und Verfahren zur Befestigung des Griffes
US3642283A (en) * 1970-02-02 1972-02-15 Howard John Wilkens Magnesium tennis racket with weighted throat piece
US3990701A (en) * 1974-11-26 1976-11-09 Sung Baik Kim Tennis racket
FR2371941A1 (fr) * 1976-11-26 1978-06-23 Dorestyl Cadre de raquette pour la pratique du tennis ou autres sports et jeux similaires
DE2752673A1 (de) * 1977-11-25 1979-05-31 Kuebler & Co Tennisschlaeger
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
FR2495477A1 (fr) * 1980-12-04 1982-06-11 Ireb Raquette de tennis

Also Published As

Publication number Publication date
US4993711A (en) 1991-02-19
ES2016645B3 (es) 1990-11-16
EP0241393A1 (de) 1987-10-14
FR2596661A1 (fr) 1987-10-09
FR2596661B1 (fr) 1989-08-25
DE241393T1 (de) 1990-06-13
JPS62295675A (ja) 1987-12-23
DE3764293D1 (de) 1990-09-20
US4909511A (en) 1990-03-20

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