EP0372289A2 - Spielschläger mit Schwingungsdämpfungseinrichtung - Google Patents

Spielschläger mit Schwingungsdämpfungseinrichtung Download PDF

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Publication number
EP0372289A2
EP0372289A2 EP89121446A EP89121446A EP0372289A2 EP 0372289 A2 EP0372289 A2 EP 0372289A2 EP 89121446 A EP89121446 A EP 89121446A EP 89121446 A EP89121446 A EP 89121446A EP 0372289 A2 EP0372289 A2 EP 0372289A2
Authority
EP
European Patent Office
Prior art keywords
vibration
racket
throat portion
damping
vibrating
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Withdrawn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
EP89121446A
Other languages
English (en)
French (fr)
Other versions
EP0372289A3 (en
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 EP0372289A2 publication Critical patent/EP0372289A2/de
Publication of EP0372289A3 publication Critical patent/EP0372289A3/en
Withdrawn legal-status Critical Current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 games racket provided with a vibration-damping assembly.
  • Rackets made of metal and/or composite materials lack the inherent vibration-damping characteristics of wooden rackets. Thus, in the case of metal and/or composite rackets, additional damping means are desirable.
  • the present invention provides a games racket comprising a head for stringing, a shaft and a handle, together with a throat portion joining the head and the shaft to each other, in which the throat portion includes one or more vibration-damping assemblies.
  • one single vibration-damping assembly is located on the throat portion at or near to an antinode of vibration of the racket, suitably on the longitudinal axis of the racket.
  • two vibration-damping assemblies are located on the throat portion, said assemblies being symmetrically placed relative to the longitudinal axis of the racket.
  • each vibration-damping assembly comprises a vibrating-member and one or more elastically-deformable mounting-members, said mounting-members attaching the vibrating-member to the racket whereby said vibrating-member is capable of free and elastic movement in the direction of an applied vibration.
  • the direction of vibration is substan­tially perpendicular to the plane of the racket stringing.
  • the vibrating-member is of a high-density material such as a metal and suitably comprises a metal rod having a mass of from 5 to 15 g.
  • the elastically-deformable mounting-members may be made of natural rubber, a synthetic rubber or a rubber-like material.
  • a suitable material is the cellular material available under the Registered Trade Mark SORBOTHANE.
  • the racket shown generally at 10, comprises a head 11 for stringing (not shown), a shaft 12 and a handle 13.
  • a throat portion 14 joins the head and the shaft to each other.
  • a single vibration-damping assembly, shown generally at 20, is located on the throat portion 14 on the longitudinal axis of the racket.
  • the throat portion 14 is provided with a hole to receive a vibrating-member comprising a metal rod 21.
  • the rod is further provided with heads 22 and 23 to locate the rod.
  • the mounting-­members comprise two deformable bushes 30 and 31, which permit movement of the rod within the throat portion in response to applied vibration when the racket is used in play. Movement takes place in the direction of arrow AA′.
  • a vibration-damping assembly 20 according to the present invention was fitted to one of two otherwise identical metal-framed tennis rackets.
  • the metal rod 21 weighed 7 g and the deformable bushes 30 and 31 were made of natural rubber.
  • 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)
EP19890121446 1988-12-02 1989-11-20 Games racket with vibration-damping assembly Withdrawn EP0372289A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888828144A GB8828144D0 (en) 1988-12-02 1988-12-02 Games racket with vibration-damping assembly
GB8828144 1988-12-02

Publications (2)

Publication Number Publication Date
EP0372289A2 true EP0372289A2 (de) 1990-06-13
EP0372289A3 EP0372289A3 (en) 1990-09-05

Family

ID=10647843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890121446 Withdrawn EP0372289A3 (en) 1988-12-02 1989-11-20 Games racket with vibration-damping assembly

Country Status (3)

Country Link
EP (1) EP0372289A3 (de)
JP (1) JPH02213367A (de)
GB (2) GB8828144D0 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210387059A1 (en) * 2020-06-11 2021-12-16 Sumitomo Rubber Industries, Ltd. Racket

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247842A (en) * 1990-09-11 1992-03-18 Dennis Chen A badminton racket
US5599018A (en) * 1994-03-31 1997-02-04 Radel; Harry Strung racket
DE29813708U1 (de) * 1998-08-02 1998-10-22 Franz Völkl GmbH & Co Ski, Tennis Sportartikelfabrik KG, 94315 Straubing Ballspielschläger
TW484438U (en) * 2000-05-11 2002-04-21 Taiwan Strong Sporting Goods I Shock-absorbing device for ball utensil with tubular rod

Family Cites Families (8)

* 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
US4627635A (en) * 1983-09-20 1986-12-09 Koleda Michael T Vibration damping units and vibration damped products
DE3342012A1 (de) * 1983-11-22 1985-05-30 Ingenieurbüro Seiler GmbH, 4937 Lage Schlaggeraet mit kompensationsgewichten - beispielsweise tennisschlaeger
IT1181005B (it) * 1984-08-09 1987-09-23 Caber Italia Dispositivo smorzatore di vibrazioni particolarmente per racchette da tennis
US4746119A (en) * 1985-01-24 1988-05-24 Patrick Jeanrot Ball-game racket with foldable and separable frame or body
ZA867666B (en) * 1985-10-11 1987-05-27 Fin Sports Ltd Racquet vibration absorbing device
FR2608444B1 (fr) * 1986-12-22 1989-03-31 Rossignol Sa Raquette de tennis
US4765620A (en) * 1987-01-16 1988-08-23 Spalding & Evenflo Companies, Inc. Racket vibration dampener combined with grommet strip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210387059A1 (en) * 2020-06-11 2021-12-16 Sumitomo Rubber Industries, Ltd. Racket

Also Published As

Publication number Publication date
GB2225539A (en) 1990-06-06
EP0372289A3 (en) 1990-09-05
GB8925185D0 (en) 1989-12-28
JPH02213367A (ja) 1990-08-24
GB8828144D0 (en) 1989-01-05

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