EP0372290A2 - Schwingungsdämpfungseinrichtung für Spielschläger - Google Patents

Schwingungsdämpfungseinrichtung für Spielschläger Download PDF

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Publication number
EP0372290A2
EP0372290A2 EP89121447A EP89121447A EP0372290A2 EP 0372290 A2 EP0372290 A2 EP 0372290A2 EP 89121447 A EP89121447 A EP 89121447A EP 89121447 A EP89121447 A EP 89121447A EP 0372290 A2 EP0372290 A2 EP 0372290A2
Authority
EP
European Patent Office
Prior art keywords
racket
vibration
handle
weight
damping
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Withdrawn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
EP89121447A
Other languages
English (en)
French (fr)
Inventor
John Martin Buxton
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.)
Dunlop Ltd
Original Assignee
Dunlop Ltd
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 Dunlop Ltd filed Critical Dunlop Ltd
Publication of EP0372290A2 publication Critical patent/EP0372290A2/de
Withdrawn legal-status Critical Current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
    • 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

  • This invention relates to a vibration-damping assembly and to games rackets containing one or more vibration-damping assemblies.
  • the present invention provides a vibration-damping assembly comprising an longate, elastically-deformable member with a closed internal cavity, together with a weight contained within said cavity and being capable of movement therein in response to applied vibration.
  • the present invention also provides a games racket comprising a head for stringing, a shaft and a handle, in which the handle is hollow and contains one or more vibration-damping assemblies as described in the immediately-preceding paragraph.
  • the elastically-deformable member may be made of natural rubber, a synthetic rubber or a rubber-like material, which may be a cellular material.
  • a particularly preferred material is the cellular material available under the Registered Trade Mark SORBOTHANE.
  • the weight may be made of any convenient material of high density, for example a metal.
  • the weight used in accordance with the present invention may suitably have a mass of up to 20 g.
  • the weight is preferably of regular geometrical configuration, e.g. cubic or spherical.
  • the weight comprises an elongate cylindrical rod.
  • the vibration-damping assemblies according to the present invention are contained whithin the hollow handle of a games racket.
  • a single vibration-damping assembly is located within the racket handle, coincident with the longitudinal axis of the racket.
  • two vibration-­damping assemblies are located within the racket handle and are symmetrically disposed relative to the longitudinal axis of the racket.
  • a tennis racket shown generally at 10, is made from a composite material and comprises a head for stringing 11 and a handle 12.
  • the handle is provided with two adjacent cavities which are symmetrically disposed about the longitudinal axis of the racket.
  • Each cavity contains an elastically-deformable member 20, 20A having a closed internal cavity which contains a weight 21, 21A respectively.
  • the weights 21 and 21A comprised a metal rod weighing 7 g.
  • Vibration damping log e (vibration decrement) x 103

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Vibration Prevention Devices (AREA)
  • Laminated Bodies (AREA)
EP89121447A 1988-12-02 1989-11-20 Schwingungsdämpfungseinrichtung für Spielschläger Withdrawn EP0372290A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8828143 1988-12-02
GB888828143A GB8828143D0 (en) 1988-12-02 1988-12-02 Vibration-damping assembly for games rackets

Publications (1)

Publication Number Publication Date
EP0372290A2 true EP0372290A2 (de) 1990-06-13

Family

ID=10647842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121447A Withdrawn EP0372290A2 (de) 1988-12-02 1989-11-20 Schwingungsdämpfungseinrichtung für Spielschläger

Country Status (3)

Country Link
EP (1) EP0372290A2 (de)
JP (1) JPH02213369A (de)
GB (2) GB8828143D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU645550B2 (en) * 1990-05-02 1994-01-20 Dunlop Limited Games racket frame
WO2011085692A1 (zh) * 2010-01-17 2011-07-21 Liu Yong 一种握柄减震的乒乓球拍、网球拍、羽毛球拍或壁球拍

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5178387A (en) * 1990-07-27 1993-01-12 Siegfried Kuebler Racket for ball games, in particular a tennis racket
US5122405A (en) * 1990-12-11 1992-06-16 Supracor Systems, Inc. Shock absorbing means for sporting equipment handles
JP2853926B2 (ja) * 1991-09-24 1999-02-03 東レ株式会社 衝撃振動吸収部材およびそれを用いてなるスポーツ用具のグリップエンド、工具のグリップエンドならびに二輪車のグリップエンド
US5197732A (en) * 1991-10-15 1993-03-30 Lanctot Paul A Tennis racket

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941380A (en) * 1972-07-31 1976-03-02 Patentex S.A. Tennis rackets and similar implements with vibration damper
US3826340A (en) * 1973-09-19 1974-07-30 H Brokaw Vibration damper for slender vertical structures
US4600194A (en) * 1983-12-22 1986-07-15 Donnelly Norbert B Anti-vibration device for sports rackets
DE3704121A1 (de) * 1986-02-19 1987-08-20 Nippon Musical Instruments Mfg Schwingungsabsorber fuer ein rakett
FR2595127B1 (fr) * 1986-02-28 1989-12-29 Dervaux Ets Amortisseur dynamique de vibrations pour cables

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU645550B2 (en) * 1990-05-02 1994-01-20 Dunlop Limited Games racket frame
WO2011085692A1 (zh) * 2010-01-17 2011-07-21 Liu Yong 一种握柄减震的乒乓球拍、网球拍、羽毛球拍或壁球拍

Also Published As

Publication number Publication date
JPH02213369A (ja) 1990-08-24
GB2225538A (en) 1990-06-06
GB8828143D0 (en) 1989-01-05
GB8925184D0 (en) 1989-12-28

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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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Withdrawal date: 19900615

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Effective date: 19900615