EP0495387B1 - Raquette à cordes pouvant être tendues, pour jeux de balles, en particulier tennis, squash ou équivalent - Google Patents

Raquette à cordes pouvant être tendues, pour jeux de balles, en particulier tennis, squash ou équivalent Download PDF

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Publication number
EP0495387B1
EP0495387B1 EP92100225A EP92100225A EP0495387B1 EP 0495387 B1 EP0495387 B1 EP 0495387B1 EP 92100225 A EP92100225 A EP 92100225A EP 92100225 A EP92100225 A EP 92100225A EP 0495387 B1 EP0495387 B1 EP 0495387B1
Authority
EP
European Patent Office
Prior art keywords
racquet
facing
recess
head
longitudinal axis
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
EP92100225A
Other languages
German (de)
English (en)
Other versions
EP0495387A1 (fr
Inventor
Peter Suchy
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.)
HAFNER, DIETER, DR.
STIPPL, HUBERT
Suchy Peter
Original Assignee
STIPPL HUBERT
Suchy Peter
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 STIPPL HUBERT, Suchy Peter filed Critical STIPPL HUBERT
Publication of EP0495387A1 publication Critical patent/EP0495387A1/fr
Application granted granted Critical
Publication of EP0495387B1 publication Critical patent/EP0495387B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • 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
    • 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
    • A63B49/03—Frames characterised by throat sections, i.e. sections or elements between the head and the shaft
    • 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
    • A63B49/03—Frames characterised by throat sections, i.e. sections or elements between the head and the shaft
    • A63B2049/0325—Frames characterised by throat sections, i.e. sections or elements between the head and the shaft with two legs having mutually different constructions
    • 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
    • A63B60/48—Details or accessories of golf clubs, bats, rackets or the like with corrugated cross-section

Definitions

  • the invention relates to a stringable racket for playing balls. This particularly addresses the area of tennis racquets, badminton racquets, squash racquets or other racquets which have a handle which is connected via a central region to a hoop-like racquet head into which the strings forming the playing surface can be retracted.
  • the middle region of the racket is formed by two frame branches enclosing an approximately triangular recess.
  • the two frame branches run together at the handle-stringed end and merge into the handle.
  • the lines of the two frame branches flow continuously into the ripe head.
  • the ripe-like club head can be oval, elliptical or a circular shape, in the prior art a wide variety of shapes of the rip-like club head are known.
  • Such phenomena can intensify if the ball is hit outside the so-called “sweet spot”, ie not with the optimal area of the striking surface, but also when the ball is hit in the "sweet spot” area, vibration energy passed through the bat into the player's hand and is therefore no longer available as energy for the ball to be played back.
  • a racket is known from EP-A-0 074 339 A1, in which the grip merges into the frame of the racket head via a main shaft and a secondary shaft. Between the main shaft and the secondary shaft there is a recess which is asymmetrical in relation to the longitudinal axis of the racket. The club head is inclined to the main axis of the club.
  • a tennis racket is also known, in which two frame branches of different lengths are provided for vibration damping and for asymmetrical enlargement of the sweet spot such that the longest long side is laterally offset from the longitudinal axis of the shaft.
  • a tennis racket is known from WO-A-9 014 870, in which the center of gravity of the racket is offset with respect to the extended grip axis in order to bring about a higher rotational stability.
  • the recess between the two frame branches, which are arranged between the club head and the grip area is asymmetrical.
  • a symmetrical racket is known in which the handle merges into the head by means of two separate frame branches.
  • Each of the frame branches has a thickening projecting into the recess.
  • the invention has for its object to improve a racket with the features of the preamble of claim 1 with regard to its vibration and resonance properties.
  • This object is achieved according to the characterizing part of the claim once in that the essentially triangular shaped recess between the two frame branches is asymmetrical in relation to the central longitudinal axis of the racket running through the handle and the club head. Defacto this means that the two frame branches mentioned differ in their shape. For example, one frame branch may be thicker than the other or else longer than the other frame branch. However, it is also possible to form bulges or thickenings, which are provided in the frame branches and protrude into the receptacle, at different locations to different degrees.
  • Purpose and goal of these consciously brought about Asymmetry is to at least partially compensate for vibrations running from the club head to the handle, which must pass through the center area of the racket, i.e. the two frame branches, in the area of the frame branches, that is to say, to shift their running times so that they no longer overlap in the handle area and can even reinforce, but at least partially compensate, ie cancel.
  • the 3 corners of the recesses should be rounded with three different rounded corners.
  • This measure also contributes to making the center area of the racket largely resonance-dead, so that the center area offers a vibration separation between the club head and handle, although it has the necessary strength and stability that is necessary for a sensitive game. Further advantageous features relating to the central area result from subclaims 3-5. Measurements on a racquet prototype have shown that the measures mentioned actually lead to a resonance optimization of the racquet.
  • the racket generally designated 1, consists of a handle 2, a hoop-like racket head 3, in which the strings 5 forming the playing surface 4 can be drawn in crosswise and a central region 6, which is formed by two frame branches 7, 8 which enclose an approximately triangular recess 9 between them.
  • the recess 9 is asymmetrical in relation to the central longitudinal axis 10 of the racket 2, which extends centrally through the handle 2 and the racket head 3.
  • Each of the two frame branches 7 and 8 has a thickening 11, 12 projecting into the recess 9, the thickening 11 of the first frame branch 7 being arranged in the region of the recess 9 facing the handle 2, while the thickening 12 is located in the Area of the recess 9 facing the club head 3.
  • the three corners of the recess are rounded off with three different corner curves 13, 14, 15, the center of the lower corner curve 13 facing the handle 2 being at a lateral distance from the central longitudinal axis 10.
  • the centers of the rounded corners 14 and 15 facing the club head 3 are at different distances from the club 1 from the central longitudinal axis.
  • the inner edge 16 of the first frame branch 7 facing the recess 9 is shorter than the inner edge 17 of the second frame branch 8 facing the recess 9, which is due to the fact that the corner rounding 15 is moved further into the club head area than the corner rounding 14 on the other side .
  • the string-covered playing surface 4 of the club head 3 is spanned by two circles 18, 19 with different radii, the two circles in the side area of the club head being merged into one another by a transition.
  • the radii of the two circles 18, 19 behave approximately as 0.94 to 0.83, which essentially corresponds to the vibration relationships between the fourth and fifth.
  • the center 20 of the larger circle 18 is arranged at the intersection of the smaller circle 19 with the central longitudinal axis 10.
  • the corner rounding 14 facing the club head 3 behaves like 1.111 to 0.9375
  • the distances projected onto the central longitudinal axis 10 between the center 21 of the handle and the corner rounding 13 relate to the distances projected onto the longitudinal axis between the corner rounding 13 and the corner rounding 15 like 1.111 to 1.0.
  • the rip-like racket head 2 shown there has in its cross section two mutually adjacent tubular recesses 22, 23, with each tube cross section being essentially spiral, which is done in that the inner surface 25 facing the string bore 24 of the tubular recesses 22, 23 are formed with a larger radius, which is on the frame side facing the playing surface at points 26 merges into a smaller radius that defines the inner surfaces of the tubular recesses 22, 23 on the outside of the frame.
  • the radius transitions of the helical pipe cross-sections merge into one another, each with a convex rounded portion 27, which are opposite each other on both sides of the side bore 24.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Pulmonology (AREA)
  • Golf Clubs (AREA)
  • Cosmetics (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Physical Vapour Deposition (AREA)
  • Laminated Bodies (AREA)

Claims (14)

  1. Raquette (1) pouvant être tendue par un cordage pour des jeux de balles, en particulier raquette de tennis, de badminton, de squash ou analogue, comprenant une poignée (2), une tête de raquette (3) en forme de cerceau dans laquelle peuvent être insérées les cordes constituant la surface de jeu, et une partie centrale reliant la poignée (2) et la tête de raquette (3), partie qui est formée par deux branches de cadre (7, 8) enfermant un évidement (9) approximativement triangulaire, l'évidement (9) étant de configuration asymétrique par rapport à l'axe médian longitudinal (10) de la raquette (1), axe qui passe au milieu de la poignée (2) et de la tête de raquette (1),
    caractérisée en ce que chacune des branches de cadre (7, 8) présente un épaississement (11, 12) s'étendant dans l'évidement, et l'épaississement (11) de la première branche de cadre (7) est disposé dans la région de l'évidement (9) qui est tournée vers la poignée (2), tandis que l'épaississement (12) de la seconde branche de cadre (8) est disposé dans la région tournée vers la tête de raquette (3).
  2. Raquette selon la revendication 1, caractérisée en ce que les trois coins de l'évidement (9) sont arrondis avec trois arrondis différents (13, 14, 15).
  3. Raquette selon la revendication 1 ou 2, caractérisée en ce que le centre de l'arrondi de coin (13) tourné vers la poignée (2) se trouve à distance de l'axe médian longitudinal (10).
  4. Raquette selon l'une quelconque des revendications précédentes, caractérisée en ce que les centres des arrondis de coins (14, 15) tournés vers la tête de raquette (3) se trouvent à des distances différentes de l'axe médian longitudinal (10) de la raquette.
  5. Raquette selon l'une quelconque des revendications précédentes, caractérisée en ce que le bord intérieur (16), tourné vers l'évidement (9), de la première branche de cadre (7) est plus court que le bord intérieur (17), tourné vers l'évidement (9) de la seconde branche de cadre (8).
  6. Raquette selon l'une quelconque des revendications précédentes, caractérisée en ce que la surface de jeu (4), pouvant être tendue d'un cordage, de la tête de raquette (3) est engendrée par deux cercles (18, 19) de rayons différents, dont les centres sont disposés sur l'axe médian longitudinal (10).
  7. Raquette selon l'une quelconque des revendications précédentes, caractérisée en ce que les rayons des deux cercles (18, 19) se comportent environ comme 0,94 par rapport à 0,83, notamment comme 0,9375 par rapport à 0,833.
  8. Raquette selon la revendication 6 ou 7, caractérisée en ce que le centre (20) du plus grand cercle (18) est disposé au point d'intersection du plus petit cercle (19) avec l'axe médian longitudinal (10).
  9. Raquette selon l'une quelconque des revendications précédentes, caractérisée en ce que les distances, projetées sur l'axe médian longitudinal (10), d'une part entre le centre (21) de la poignée (2) et le centre de l'arrondi de coin (13) tourné vers la poignée, et d'autre part entre l'arrondi de coin (13) tourné vers la poignée et les arrondis de coins respectifs (14, 15) tournés vers la tête de raquette (3) se comportent environ comme 1,1 (notamment 1,111) par rapport à 0,94 (notamment 0,9375) et, respectivement, comme 1,111 par rapport à 1,0.
  10. Raquette selon l'une quelconque des revendications précédentes, caractérisée en ce que le rayon du plus grand cercle (18) correspond à la distance, projetée sur l'axe médian longitudinal (10), entre l'arrondi de coin (13) tourné vers la poignée et l'arrondi de coin (14) disposé à l'extrémité côté tête de raquette de la première branche de cadre (7).
  11. Raquette selon l'une quelconque des revendications précédentes, caractérisée en ce qu'on évite que les faces du cadre soient parallèles.
  12. Raquette selon l'une quelconque des revendications précédentes, caractérisée en ce que la tête de raquette (3) en forme de cerceau présente une section à deux évidements tubulaires juxtaposés (22, 23), dont les sections tubulaires sont configurées sensiblement en spirale.
  13. Raquette selon la revendication 12, caractérisée en ce que les transitions de rayons des sections tubulaires hélicoïdales sont dotées d'un arrondi convexe (27).
  14. Raquette selon la revendication 13, caractérisée en ce que les deux arrondis convexes (27) se font face.
EP92100225A 1991-01-12 1992-01-09 Raquette à cordes pouvant être tendues, pour jeux de balles, en particulier tennis, squash ou équivalent Expired - Lifetime EP0495387B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9100325U DE9100325U1 (fr) 1991-01-12 1991-01-12
DE9100325U 1991-01-12

Publications (2)

Publication Number Publication Date
EP0495387A1 EP0495387A1 (fr) 1992-07-22
EP0495387B1 true EP0495387B1 (fr) 1996-04-10

Family

ID=6863284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92100225A Expired - Lifetime EP0495387B1 (fr) 1991-01-12 1992-01-09 Raquette à cordes pouvant être tendues, pour jeux de balles, en particulier tennis, squash ou équivalent

Country Status (4)

Country Link
EP (1) EP0495387B1 (fr)
AT (1) ATE136474T1 (fr)
DE (2) DE9100325U1 (fr)
ES (1) ES2088508T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4031180A1 (de) * 1990-10-03 1992-04-09 Matthias S Bothe Schlaeger, insbesondere tennis-, squash-, badminton- oder racketballschlaeger
FR2689022B1 (fr) * 1992-03-31 1994-10-28 Rossignol Sa Raquette de tennis ou assimilé.
FR2707506B1 (fr) * 1993-06-29 1995-09-08 Rossignol Sa Raquette de tennis ou analogue.
FR2821756B1 (fr) * 2001-03-12 2003-06-06 Rossignol Sa Raquette de tennis, de squash ou de badmington

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1322606A (en) * 1971-08-12 1973-07-11 Yoneyama Racket Kk Games racket
US4413822A (en) * 1981-07-31 1983-11-08 American Sports Equipment Elastic core composite structure and method of making same
IT8153581V0 (it) * 1981-09-04 1981-09-04 Gibello Carlo Racchetta per il gioco del tennis
DE3731529A1 (de) * 1987-09-18 1989-03-30 Kneissl Tirol Sportartikel Ag Ballschlaggeraet, insbesondere tennis- oder squashschlaeger
AU5741290A (en) * 1989-06-06 1991-01-07 Josef Baumgartner Tennis racket

Also Published As

Publication number Publication date
ES2088508T3 (es) 1996-08-16
DE9100325U1 (fr) 1991-04-04
EP0495387A1 (fr) 1992-07-22
ATE136474T1 (de) 1996-04-15
DE59205921D1 (de) 1996-05-15

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