WO2007144754A2 - Améliorations dans des équipements de sports - Google Patents

Améliorations dans des équipements de sports Download PDF

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Publication number
WO2007144754A2
WO2007144754A2 PCT/IB2007/001596 IB2007001596W WO2007144754A2 WO 2007144754 A2 WO2007144754 A2 WO 2007144754A2 IB 2007001596 W IB2007001596 W IB 2007001596W WO 2007144754 A2 WO2007144754 A2 WO 2007144754A2
Authority
WO
WIPO (PCT)
Prior art keywords
racquet
shaft
grip
head
elastomeric material
Prior art date
Application number
PCT/IB2007/001596
Other languages
English (en)
Other versions
WO2007144754A3 (fr
Inventor
Kak Hong Heng
Original Assignee
Kak Hong Heng
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 MYPI20062778A external-priority patent/MY147714A/en
Application filed by Kak Hong Heng filed Critical Kak Hong Heng
Publication of WO2007144754A2 publication Critical patent/WO2007144754A2/fr
Publication of WO2007144754A3 publication Critical patent/WO2007144754A3/fr

Links

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
    • 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
    • A63B49/08—Frames with special construction of the handle
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/14—Handles
    • 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
    • A63B2209/00—Characteristics of used materials
    • 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
    • A63B60/06—Handles
    • A63B60/14—Coverings specially adapted for handles, e.g. sleeves or ribbons

Definitions

  • This invention relates to sports equipment, and more particularly to equipment for playing sports in which an object is struck using an implement comprising a head portion for striking the object and which is connected to a grip portion by a shaft.
  • sports include, for example golf, tennis, squash and badminton.
  • racquets For convenience such equipment will be referred to generally as racquets although this may not be the correct name for equipment in some relevant sports.
  • the action of hitting the object can jar the player's arm, and particularly the wrist and elbow, so that in later life complications such as tennis or golfer's elbow or arthritis may occur, especially among professional players and others who play a great deal of sport.
  • the heads and shafts of badminton, squash and tennis racquets have changed from being made of wood and are now made from such materials as, for example, glass-fiber reinforced plastics, otherwise known as fiberglass, and graphite or carbon fiber based materials.
  • the grips of such racquets still mainly consist of wood- usually with a protective wrapping of, for example, leather, or cloth or, in some cases, rubber.
  • badminton and squash racquets which have a relatively thin shafts compared with the grip portion, there is a degree of resilience or whip in the shaft that absorbs some of the impact of hitting the object used in the game, but, because, of the much greater weight of a tennis ball compared with that of a shuttlecock or a squash ball, a tennis racquet must have a much thicker shaft with practically no inherent resilience so that all the impact of hitting a tennis ball passes along the players arm.
  • a racquet for playing a sport in which an object is struck with the racquet comprises a head portion for striking the object connected to a grip portion by a shaft which is of lesser cross-sectional dimension than the grip portion, which surrounds a part of the end of the shaft remote form the head portion, wherein the grip portion apart from any protective covering threon,or a part thereof between the head of the racquet and a terminal part remote from the head portion is made from a substantially non-resilient material, is formed from a natural or synthetic elastomeric material having a hardness within the range of 50 to 90 IHRD.
  • the elastomeric material may be, for example, nitryl rubber or acrylonitryl rubber, preferably of IHRD between 60 and 85, more preferably about 80.
  • the nature of the rubber is not particularly important provided it is sufficient resilient to absorb at least some impact of striking the object used in the game but is not so soft that the power of a shot is reduced, and is resistant to wear so that it does not have to be changed too frequently.
  • the elastomeric material part of me grip portion is preferably not less than half the length of the total grip portion.
  • the shafts of which have an inherent degree of resilience it may be desired to introduce a second point of flex around the end of the shaft closest to the grip portion. This may be achieved by making the shaft shorter than the international standard and making up the length with an extension portion o ⁇ material that has a lesser resilience than both of the rest of the shaft and the elastomeric material part of the grip. The grip portion will then cover the extension portion and a short length of the rest of the shaft. In this case the shaft will flex at a point about one third to half way along the length of the original shaft and at the point where the extension portion is attached. —
  • the extension portion may be made from any material that fulfils the required criteria but is preferably made from spring steel dimensioned at one end to fit tightly within the end of the shaft. It may, for example, comprise a circular, preferably a tubular length of material or a flattened strip of material arranged such that its width lies parallel to the head of the racquet.
  • Fig 1 shows a first form of (he invention Fig 2 shows a second form of the invention Fig 3 shows a third form of the invention 0
  • the shaft 1 of the racquet has an octagonal ip 2 made of nitryl rubber of IHRD hardness about 80. Grip ⁇ ' as transverse 5 corrugations along its length. Shaft 1 is of the Intern anal Standard
  • Inch Length and extends die entire length of grip 2, Inch may be covered in toweling or other sweat absorbing iterial.
  • a conventional grip 2 has a conical portion 3 at the d nearest die racquet head to provide a smooth transition betweer , ip 2 and shaft 0 1.
  • the shaft 1 of the racquet is fo ⁇ r . in two parts, a first part Ia extending from the racquet head and ich is shorter than the shaft as shown in Fig.l and a extension piii m Ib coaxial 3 with and fitted within part Ia, which is of lea;!; sufficient to increase me length of the -whole shaft to mat sii m in Fig. 1.
  • Extension portion Ib comprises a strip of spring stet-l aving a lesser resilience than that of part Ia of shaft 1.
  • the grip 2 of a racquet .instead being formed totally of rubber as in Fig. 1 and 2, is formed ⁇ «: ubber having corrugated surface over about half of its length 2 ⁇ excluding the conical portion 3) and of wood or other material at I distal end of the shall 1 $
  • Such a grip 2 can be used in a racquet with or witH t an extended portion Ib.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

Raquette pour pratiquer un sport dans lequel un objet est frappé avec la raquette, comprenant une partie de tête pour frapper l'objet, reliée à une partie de préhension polygonale (2) par un manche (1), dont la dimension de la section transversale est inférieure à celle de la partie de préhension (2), dans laquelle la partie de préhension (2), excepté tout recouvrement de protection sur celle-ci, ou une partie de celle-ci entre la partie de tête (4) de la raquette et une partie terminale (2b) constituée d'une autre matière, est constituée d'une matière élastomère naturelle ou synthétique dont la dureté est comprise dans la gamme de 50 à 90 IHRD, et qui entoure au moins une partie de l'extrémité du manche (1) distante de la partie de tête.
PCT/IB2007/001596 2006-06-13 2007-06-13 Améliorations dans des équipements de sports WO2007144754A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI20062778 2006-06-13
MYPI20062778A MY147714A (en) 2005-06-23 2006-06-13 Method and system for adjusting inter-scan period of a mobile station

Publications (2)

Publication Number Publication Date
WO2007144754A2 true WO2007144754A2 (fr) 2007-12-21
WO2007144754A3 WO2007144754A3 (fr) 2008-02-28

Family

ID=38832164

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/001596 WO2007144754A2 (fr) 2006-06-13 2007-06-13 Améliorations dans des équipements de sports

Country Status (1)

Country Link
WO (1) WO2007144754A2 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5240247A (en) * 1990-07-13 1993-08-31 Head Sport Aktiengesellschaft Racquet for ball games
US6500080B2 (en) * 2001-05-04 2002-12-31 Wilson Sporting Goods Co. Game racquet with separate head and handle portions for reducing vibration

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3013944B2 (ja) * 1991-08-30 2000-02-28 キヤノン株式会社 光磁気ディスク装置
JP2785688B2 (ja) * 1994-05-11 1998-08-13 ヤマハ株式会社 ラケットフレームのグリップ構造

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5240247A (en) * 1990-07-13 1993-08-31 Head Sport Aktiengesellschaft Racquet for ball games
US6500080B2 (en) * 2001-05-04 2002-12-31 Wilson Sporting Goods Co. Game racquet with separate head and handle portions for reducing vibration

Also Published As

Publication number Publication date
WO2007144754A3 (fr) 2008-02-28

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