EP0542461A2 - Games racket - Google Patents

Games racket Download PDF

Info

Publication number
EP0542461A2
EP0542461A2 EP92310054A EP92310054A EP0542461A2 EP 0542461 A2 EP0542461 A2 EP 0542461A2 EP 92310054 A EP92310054 A EP 92310054A EP 92310054 A EP92310054 A EP 92310054A EP 0542461 A2 EP0542461 A2 EP 0542461A2
Authority
EP
European Patent Office
Prior art keywords
strings
cross
main
holes
plane
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Withdrawn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
EP92310054A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0542461A3 (enrdf_load_stackoverflow
Inventor
Robert Christopher Haines
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
Priority claimed from GB919124031A external-priority patent/GB9124031D0/en
Priority claimed from GB919124040A external-priority patent/GB9124040D0/en
Priority claimed from GB929201462A external-priority patent/GB9201462D0/en
Application filed by Dunlop Ltd filed Critical Dunlop Ltd
Publication of EP0542461A2 publication Critical patent/EP0542461A2/en
Publication of EP0542461A3 publication Critical patent/EP0542461A3/xx
Withdrawn legal-status Critical Current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
    • A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings
    • 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
    • A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings
    • A63B51/06—Double-sided stringing

Definitions

  • the present invention relates to a games racket for example for tennis, squash or badminton.
  • the improvement resides in a novel stringing system which gives beneficial playing effects to the resulting racket.
  • Most games rackets comprise a head frame portion and a handle portion, the head frame portion being provided with holes extending therethrough and two sets of strings one substantially longitudinal (the "main” strings) and one substantially lateral (the “cross” strings), the main strings and the cross-strings interlacing with each other to provide substantially planar playing surfaces.
  • the strings constituting the "mains and "crosses” may or may not cross at right angles.
  • the configuration of the strings will of course be determined by the configuration of these holes.
  • Most rackets are made so that the axis of each hole lies within a central plane defined by the interlaced main-and cross- strings, termed the plane of interlaced strings in the following description.
  • a games racket comprises a head frame portion defining a substantially planar assembly of interlaced main-and cross-strings which pass through individual holes in the head frame portion which are axially positioned in one of two notional planes parallel to the plane of interlaced main-and cross-strings and positioned one on each side and equidistant from said plane of interlaced main- and cross-strings such that successive ends of the main-strings and of the cross-strings enter holes positioned alternately in different notional planes, wherein for over two-thirds (66.67%) of the total number of main-and cross-strings both ends of each string go through holes in the same notional plane.
  • a method of stringing the head frame portion of a games racket comprises providing holes in the frame for main- and cross-strings the holes being positioned in two parallel notional planes and the strings being threaded through said holes such that successive ends of the main- and of the cross-strings enter holes positioned alternately in different notional planes, the main- and cross-strings interlacing with each other in a plane between and parallel with the notional planes and equidistant therefrom, wherein for over two-thirds (66.67%) of the main- and cross-strings both ends of each string go through holes in the same notional plane.
  • One way of achieving this configuration is to provide an odd number of main-strings and an odd number of cross-strings.
  • a potential playing advantage of the present invention is that for ball contact near the frame, the ball is supported primarily by half the number of strings than would normally be the case and this has the effect of lessening the shock of ball impact felt by the player. This generally improves the uniformity of feel of the racket for ball contact over the whole strung playing surface.
  • a further playing advantage of such an arrangement is that as the string bed (playing surface) is deformed by a ball contacting the strings, the tension in adjacent strings changes in that one increases and the other decreases. This has the effect of causing alternate strings with high tension to bite more deeply into the ball surface than they would otherwise do, so that increased spin can be imparted to the ball. Greater bite will also be obtained for instance for a shuttlecock cork which can be advantageous in the game of badminton.
  • main- and cross-strings positioned in the central region of the head of the racket i.e. enclosed by the rectangle or quadrilateral inscribed within the racket head defined either by the two outermost cross-strings and the two corresponding main-strings or the two outermost main-strings and the two corresponding cross-strings
  • these strings constitute over 66.67% of the total number of strings of the racket and typically over 75%.
  • the number of strings meeting these criteria may be increased to 100% and this allows the full area of the string surface to contribute to the desirable qualities referred to and to provide the ultimate in racket performance.
  • holes for these strings are positioned in the said notional planes and in a plane perpendicular both to the plane of interlacing and to the tangent to the head frame portion at this point.
  • the holes are offset in relation to each other rather than being aligned in planes perpendicular to the plane of interlacing.
  • holes in theracket frame 5 for the cross-strings lie in two notional planes 1,2 one on each side of the plane of interlaced strings 3 parallel to and equidistant from it.
  • the holes alternate from one notional plane to the other and are offset from each other within and between these planes to give appropriate spacing to the mesh of the string net.
  • the main-strings 4 are in the same configuration and there is an odd number of these also.
  • Figure II illustrates the way adjacent string-ends alternate from one notional plane to the other and that opposite ends of strings lie in the same notional plane.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Laminated Bodies (AREA)
  • Golf Clubs (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
EP92310054A 1991-11-12 1992-11-03 Games racket Withdrawn EP0542461A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB9124031 1991-11-12
GB919124031A GB9124031D0 (en) 1991-11-12 1991-11-12 Games racket
GB9124040 1991-11-12
GB919124040A GB9124040D0 (en) 1991-11-12 1991-11-12 Games racket
GB9201462 1992-01-23
GB929201462A GB9201462D0 (en) 1992-01-23 1992-01-23 Games racket

Publications (2)

Publication Number Publication Date
EP0542461A2 true EP0542461A2 (en) 1993-05-19
EP0542461A3 EP0542461A3 (enrdf_load_stackoverflow) 1994-01-19

Family

ID=27265922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92310054A Withdrawn EP0542461A2 (en) 1991-11-12 1992-11-03 Games racket

Country Status (6)

Country Link
EP (1) EP0542461A2 (enrdf_load_stackoverflow)
JP (1) JPH05208054A (enrdf_load_stackoverflow)
CN (1) CN1050307C (enrdf_load_stackoverflow)
AU (1) AU668113B2 (enrdf_load_stackoverflow)
CA (1) CA2082257A1 (enrdf_load_stackoverflow)
GB (1) GB2261380B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0788817A3 (en) * 1996-02-12 1999-08-18 Tsai Chen Soong Sports racket with odd number of longitudinal strings

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3803082B2 (ja) 2001-11-13 2006-08-02 三星電子株式会社 インクジェットプリンターのメンテナンス装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB143481A (en) * 1920-01-14 1920-05-27 Frederick Gaspard James Tourni Improvements in or relating to tennis racquets or the like
GB223151A (en) * 1924-04-08 1924-10-16 Oswald Edward Lewis Improvements in racquets for tennis, badminton, and the like
FR976198A (fr) * 1948-10-02 1951-03-14 Raquette de tennis à nouveau système d'entrecroisage des cordes
US4802678A (en) * 1986-02-03 1989-02-07 Svoma Rodney A Sports racket
DE8804535U1 (de) * 1988-02-25 1988-08-04 Dischinger, Gebhard, 7710 Donaueschingen Fertig-Geflecht
US5037097A (en) * 1988-08-18 1991-08-06 Athletic Alternatives, Inc. Sports racket

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0788817A3 (en) * 1996-02-12 1999-08-18 Tsai Chen Soong Sports racket with odd number of longitudinal strings

Also Published As

Publication number Publication date
JPH05208054A (ja) 1993-08-20
EP0542461A3 (enrdf_load_stackoverflow) 1994-01-19
CN1076634A (zh) 1993-09-29
GB2261380B (en) 1995-04-26
AU668113B2 (en) 1996-04-26
GB9223060D0 (en) 1992-12-16
CA2082257A1 (en) 1993-05-13
AU2814692A (en) 1993-05-13
CN1050307C (zh) 2000-03-15
GB2261380A (en) 1993-05-19

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