EP1557204B1 - Raquette pour jeux de balle et méthode de fabrication - Google Patents

Raquette pour jeux de balle et méthode de fabrication Download PDF

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Publication number
EP1557204B1
EP1557204B1 EP05001049A EP05001049A EP1557204B1 EP 1557204 B1 EP1557204 B1 EP 1557204B1 EP 05001049 A EP05001049 A EP 05001049A EP 05001049 A EP05001049 A EP 05001049A EP 1557204 B1 EP1557204 B1 EP 1557204B1
Authority
EP
European Patent Office
Prior art keywords
racket
trough
shaped depressions
frame
clock
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.)
Not-in-force
Application number
EP05001049A
Other languages
German (de)
English (en)
Other versions
EP1557204A2 (fr
EP1557204A3 (fr
Inventor
Johannes Mauser
Klaus Rambach
Manfred Emberger
Johan Kotze
Herfried Lammer
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Head Technology GmbH
Original Assignee
Head Technology GmbH
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Filing date
Publication date
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Publication of EP1557204A2 publication Critical patent/EP1557204A2/fr
Publication of EP1557204A3 publication Critical patent/EP1557204A3/fr
Application granted granted Critical
Publication of EP1557204B1 publication Critical patent/EP1557204B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A63B49/022—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
    • 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
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B2049/0211—Frames with variable thickness of the head in a direction perpendicular to the string plane
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and 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
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/50—Details or accessories of golf clubs, bats, rackets or the like with through-holes
    • 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
    • A63B60/52—Details or accessories of golf clubs, bats, rackets or the like with slits

Definitions

  • the present invention relates to a racket for ball games, in particular a tennis, squash, badminton, racquetball or paddle tennis racket with excellent handling characteristics, as well as a manufacturing method for such a racket.
  • Such clubs typically include a frame that forms a club head and a handle portion connected thereto.
  • a so-called heart region is formed in the transition region between the club head and the grip section.
  • the frame is formed from a frame profile that is often made from a carbon fiber reinforced plastic material in a molding press.
  • the club head of the racket defines a clothing plane in which the clothing of the racket is placed. To accommodate the sides of the clothing lying on the frame in the stringing plane through holes are provided for the implementation of clothing pages.
  • the EP 0 676 222 B1 a racket having a handle and a frame having a head portion, force amplifying portions and flexible portions alternately formed along the entire frame or along a portion of the frame spaced from the handle.
  • Each force amplifying portion is formed by a projecting frame portion having a relatively large side thickness measured in a direction perpendicular to the plane of the frame.
  • Each of the flexible portions is formed by a recessed frame portion having a relatively small side thickness measured in a direction perpendicular to the plane of the frame.
  • the number of 10 to 20 and the number of recessed flexible sections is also 10 to 20.
  • the DE 37 16 708 A1 discloses a racquet having a head portion connected to a handle stem via a neck portion.
  • the neck portion has a plurality of recesses on each of its upper and lower surfaces extending substantially parallel to the face of the head portion. These recesses are symmetrical and equidistant from each other.
  • the US-A-4,353,551 discloses a tennis racket with dynamically mounted mass parts which are arranged symmetrically to the longitudinal axis of the racket between a neck portion and a transverse axis of the club head. According to one embodiment, recesses are provided in the racket frame for receiving the mass parts.
  • the US-A-5,100,136 discloses a tennis racket with an oval club head and a club grip extending from a neck portion.
  • An elongate, inserted channel is formed along the centerline of the outside of the head frame.
  • a plurality of through holes are provided, can be passed through the strings of a string.
  • On the head frame an elongate passage opening is provided on both sides, which is spaced by a predetermined distance from the outside of the head frame for covering and extending through a base portion of the channel.
  • Each passage opening thereby defines a pair of elongated ribs which are arranged parallel to the clothing surface and on both sides thereof.
  • an elongated elastic member having a generally T-shaped cross section is provided.
  • the US-A-2002/0058557 discloses a tennis racket with a dynamic damper having a viscoelastic part and a mass part laminated thereto.
  • the dynamic damper has horizontal frames and vertical frames so that the damper has a U-shaped cross-section.
  • the horizontal frames are attached to the racket in its thickness direction, that is, in a direction perpendicular to the stringing plane, and the vertical frames in the width direction of the racket, that is, substantially parallel to the stringing plane of the racket.
  • These viscoelastic dampers are preferably mounted in the region of 3 o'clock or 9 o'clock on the club head.
  • the present invention has for its object to provide an improved racket, which allows excellent ball guidance and acceleration and can be constructed at the same time in lightweight construction.
  • This object is achieved with a racket having the features of independent claim 1.
  • preferred embodiments of the racket according to the invention are described.
  • the independent method claim 11 relates to a manufacturing method for such a racket.
  • the dependent claims relate to advantageous embodiments of the method according to the invention.
  • the racquet for ball games has a frame formed from a frame or hollow profile, which has a club head and a preferably connected thereto via a heart region grip portion.
  • the clubhead defines a stringing plane.
  • the frame profile has four trough-shaped indentations, which are each arranged in pairs opposite and symmetrical to the longitudinal axis of the racket. In the region of the trough-shaped indentations, at least one opening extending through the frame profile is provided which runs essentially perpendicular to the clothing plane.
  • the trough-shaped recesses are preferably arranged on the frame profile such that a cross-sectional constriction or constriction results in a direction perpendicular to the clothing plane of the racket.
  • the head shape of the racket is largely arbitrary and can, for example, oval. ovate, drop-shaped, rectangular with rounded corners.
  • a dial of a watch is usually used, the 12 o'clock position being located at the outermost or free end of the club head (cf. FIG. 1 ). Accordingly, the 3 o'clock or 9 o'clock position is approximately in the middle of the total length of the club head.
  • the four trough-shaped indentations are arranged on the club head such that a first pair is provided between 2 o'clock and 4 o'clock, in particular at about 3 o'clock, and a second pair between 8 o'clock and 10 o'clock, in particular at about 9 o'clock.
  • the trough-shaped indentations are accordingly spaced approximately as far from the handle end of the racket as the center of the club face or the area of the club face with maximum impact speed. Under certain circumstances, this preferred position for the trough-shaped indentations also about 1 cm to 4 cm, preferably 2 cm to 3 cm, be moved from the center in the direction of the free end of the club head.
  • the racket according to the invention thus has per racket side (front or back) on two trough-shaped indentations, one of which is located on this side and the other beyond the longitudinal axis of the racket.
  • each racket side and racket half each have a single trough-shaped indentation - thus a total of exactly four indentations - provided on the racket according to the invention.
  • the recesses are arranged in the area at about 3 o'clock or 9 o'clock.
  • a pair of trough-shaped indentations in the range between 2 o'clock and 4 o'clock, in particular at about 3 o'clock, and another pair of trough-shaped indentations between 8 o'clock and 10 o'clock, in particular at about 9 o'clock, are thus provided, ie the trough-shaped indentations arranged in pairs opposite and symmetrical to the longitudinal axis of the racket.
  • the cross-sectional constriction caused by the trough-shaped recesses arranged opposite the frame profile is preferably such that the frame height (in the direction perpendicular to the clothing plane) is about 60 to 95%, more preferably 70 to 90%, and even more preferably about 80% of the height of Frame profile outside the indentations amounts.
  • the length of the recess along the frame is preferably in the range between 10 mm and 30 mm, more preferably between 12 mm and 25 mm, most preferably between 15 mm and 23 mm.
  • the trough-shaped recesses preferably have a substantially circular arc-shaped cross section, viewed in the clothing plane, which has, for example, a radius of approximately 15 mm to 25 mm, more preferably approximately 20 mm.
  • the cross section may also be elliptical, hyperbolic, polygonal or rectangular with rounded corners.
  • the racket according to the invention is particularly advantageous in terms of its improved ball guidance.
  • vibrations that occur when hitting the ball derived less to the handle than in known rackets.
  • the acceleration capacity that can be transferred to the ball with the racket according to the invention is improved.
  • the advantageous properties of the racket according to the invention are probably due to the fact that the bending resistance of the frame profile is locally reduced by the trough-shaped indentations, so that a kind of "joint" ("control point”) is created by these indentations.
  • the effect according to the invention is particularly advantageous, inter alia, if a pair of trough-shaped indentations in the range between 2 o'clock and 4 o'clock, in particular at about 3 o'clock, and another pair of trough-shaped indentations between 8 o'clock and 10 o'clock, in particular at about 9 o'clock, is provided, wherein the trough-shaped recesses are arranged opposite and symmetrical to the longitudinal axis of the racket.
  • the Indentations at about 3 o'clock and 9 o'clock are where the ball is hit very often when playing (based on the clubface), so that the club virtually "encloses” the ball due to the local reduction of the bending resistance moment of the frame profile effected in the area of the indentations. , This has in particular a longer residence time of the ball on the fabric of the racket and thus an improved ball control result.
  • the effect of the invention is further enhanced by the openings.
  • the opening extends through the pairs of oppositely arranged trough-shaped indentations.
  • each trough-shaped indentation has a hole, so that in this area the outermost wall of the frame profile, i. the part of the wall of the frame profile which is furthest from the clothing plane, is substantially weakened, whereby the bending resistance moment of the frame profile is further reduced.
  • the trough-shaped recesses are preferably formed during the shaping of the racket in the molding press.
  • the openings are preferably formed after forming the racket in the molding press subsequently to the frame. However, they may also be made during the molding process by, for example, inserting a core into the mold.
  • the subsequent training is preferably carried out by drilling, milling or sawing.
  • the cross section of the opening is usually circular in the case of drilling, but may also have any other shape.
  • a circular opening preferably has a diameter in the range between 2 mm and 8 mm, more preferably between 3 mm and 6 mm.
  • each of the holes is preferably formed in the direction of view parallel to the fabric plane substantially arcuate or trough-shaped.
  • the length of each of the holes along the frame is preferably in the range between 1 mm and 10 mm, more preferably between about 3 mm and 7 mm.
  • the depth of each hole is at least the wall thickness of the frame profile.
  • the width of the holes i. their dimension in the direction of the side passage holes or perpendicular to the direction of the frame at the relevant location, is preferably in the range between 3 mm and 7 mm.
  • the dimensions of the hole, in particular its width and depth, should be selected so that the hole does not extend to a provided in the frame groove for receiving a headband.
  • the openings are preferably provided in pairs substantially symmetrically to the longitudinal axis of the racket, ie, it may be two, four, six or more openings provided symmetrically to the longitudinal axis of the racket.
  • the at least one opening is preferably in the range between 2 o'clock and 4 o'clock and / or between 8 o'clock and 10 o'clock at the club head. Particularly preferred is the paired arrangement of openings in this area. More preferably, at least one pair of apertures are provided at about 3 o'clock and 9 o'clock respectively at the club head.
  • a plurality of openings on each side for example, a plurality of openings symmetrically at the 3 o'clock or 9 o'clock position or from 3 o'clock or 9 o'clock to the handle portion or starting from 3 o'clock or 9 o'clock be arranged towards the free end of the club head.
  • one through opening is provided centrally or centrally through a pair of opposing trough-shaped indentations.
  • the opening In order to prevent the penetration of dirt and / or moisture into the frame profile, it is preferred to equip the opening with an insert, so that the frame profile is closed inwards.
  • the insert is tubular with a through hole formed; However, it can also be provided as a full element.
  • the insert is usually made of an elastic material (e.g., rubber) so that the beneficial effects obtained by providing the apertures are minimally affected. It is also possible to cover each of the holes forming the opening with a separate cover made of an elastic material, whereby the same effect is achieved.
  • reinforcing layers of carbon fiber, glass or aramid fabric and / or a unidirectional prepreg are suitable, which are arranged at an angle of ⁇ 45 ° to the longitudinal extent of the frame profile (i.e., helically in the wall of the frame profile).
  • FIG. 1 shown schematic representation of the racket 2 according to the invention includes for better understanding a dial corresponding to a normal clock, wherein the 12 o'clock position (XII) is provided at the outermost free end of the racket.
  • the racket 2 has a frame 4 which forms a racket head 6 and a handle section 10 preferably connected thereto via a heart area 8.
  • the frame 4 is formed from a frame or hollow profile (see Fig. 4 ).
  • the club head defines a clothing plane of the racket.
  • the frame 4 in the region of the club head 6 has a plurality of through holes 7 lying substantially in the clothing plane (FIG. Fig. 3 ) for the performance of stringed strings 9, of which in the cross section according to Fig. 4 one is shown schematically.
  • the frame profile is generally between about 2 o'clock and 4 o'clock, in particular at about 3 o'clock, or between about 8 o'clock and 10 o'clock, in particular at about 9 o'clock, in each case a pair of opposing trough-shaped indentations 12 intended.
  • a total of four of the recesses 12 are formed on the racket 2 according to the invention. Due to the recesses 12, the frame height in the direction perpendicular to the clothing plane in this area is reduced by twice the amount T of each trough-shaped indentation 12.
  • the depths T of the opposing indentations 12 are preferably dimensioned such that in the region of the indentations a frame height h results which is approximately 60 to 95%, preferably approximately 70 to 90%, more preferably approximately 80%, of the frame height H outside the indentations 12 is. Consequently, the racket according to the invention, for example, at a frame height H of 20 mm in the region of the opposing recesses 12 a frame height h of about 16 mm.
  • the length L of the trough-shaped recesses along the frame is typically in the range of 10 mm to 30 mm, preferably between 12 mm and 25 mm, and more preferably between 15 mm and 23 mm. It is further preferred to form the trough-shaped indentation 12 substantially in the form of a circular arc when viewed in the clothing plane, with radii R in the range between 15 mm and 25 mm being preferred. A radius of about 20 mm is currently particularly preferred.
  • the width B of the trough-shaped recess i. their dimension in the direction of the string through holes or perpendicular to the direction of the frame at the relevant location, depends essentially on the cross-sectional shape of the frame profile and the depth T of the recess 12 from.
  • the trough-shaped recesses 12 typically extend substantially over the entire width of the frame profile.
  • a racket with a frame height H of 19 mm and a radius of the trough-shaped recess of 20 mm results in a trough length L of about 17 mm and a case depth T of about 1.9 mm, so that the frame height h in the region of the opposite recesses 12 is about 15.2 mm, ie about 80% of the frame height H.
  • a racket with a frame height H of 28.5 mm results for the same radius for the trough-shaped recesses a trough length L of about 20.6 mm and a bowl depth of about 2.85 mm.
  • the remaining frame height h in the region of the indentations 12 is thus about 22.8 mm, which is also a Reduction of the frame height to 80% of lying outside the indentations 12 frame height H corresponds.
  • a recess 12 is shown in more detail on the frame 4 of the racket according to the invention.
  • an opening 14 is further provided in the trough 12, which extends substantially perpendicular to the clothing plane or to the through holes 7 for the strings 9 through the frame profile to the opposite trough 12, preferably centrally through the Hopper.
  • the opening 14 is, as in Fig. 2b shown formed in the form of a substantially circular cylindrical through hole.
  • the bore extends through the two opposite walls of the frame profile, thereby forming two opposite, aligned holes in the frame profile.
  • the diameter of the opening is preferably in the range between about 2 mm and 8 mm, more preferably between 3 mm and 6 mm.
  • an insert 16 is preferably provided in the opening 14, which terminates the frame profile to the interior of the opening 14.
  • the insert 16 is preferably tubular, i. with a passage opening 18, formed. However, it can also be designed as a "lid" or solid profile.
  • the insert 16 is typically made of a soft, resilient material so that it does not significantly affect the characteristics of the racquet in this area. Preferably, a transparent plastic (e.g., rubber) is used for this purpose.
  • the tubular insert 16 preferably has a small wall thickness of e.g. about 0.5 to 1.5 mm, preferably from about 0.5 to 1 mm, on.
  • Another way to provide the opening 14 in the frame 4 of the racket 2 according to the invention is, instead of a through hole through the frame profile at the front and back of the frame each individual holes train.
  • two opposite holes together form an opening 14 extending through the frame profile.
  • the holes may have any desired shape, but are preferably substantially arcuate or trough-shaped when viewed parallel to the clothing plane. This can be realized for example by milling or sawing.
  • the length of the holes along the frame is preferably in the range between 1 mm and 10 mm, more preferably between 3 mm and 7 mm.
  • the greatest depth of a hole corresponds at least to the wall thickness of the frame profile, so that the frame profile is at least partially completely removed to expose an opening in the interior of the frame profile.
  • the maximum depth of the hole is preferably the depth up to a groove 20 (FIG. Fig. 4 ) for receiving a headband 22 ( Fig. 3 ) of the bat practicable.
  • the width of the hole is preferably in the range between 3 mm and 7 mm.
  • the opening is preferable to provide the opening with a substantially tubular insert or lid, the shape of which may be adapted to the shape of the hole, so that neither dirt nor moisture can get into the interior of the frame profile.
  • the trough-shaped recesses 12 are preferably formed during molding of the racket frame 4 in the frame profile, for example by providing a corresponding bulge in the mold. Furthermore, it may be preferable to provide in the region of the recesses 12 one or more reinforcing layers in the material forming the frame profile. For this purpose, for example carbon fiber material, glass or aramid fabric and / or a unidirectional prepreg at an angle of ⁇ 45 ° to the longitudinal frame extension (ie helically in the wall of the frame profile) are incorporated into the racket frame forming frame profile. This is preferably done by superimposing the different layers of frame material and reinforcing material and then rolling the superimposed materials into a "tube" which then inserted into the molding press and pressed under the action of temperature and pressure to the frame.
  • the racket according to the invention is particularly advantageous in terms of its improved ball guidance and the ability to give the ball excellent accelerations.
  • the advantageous properties of the racket according to the invention are presumably due to the fact that the bending resistance of the frame profile is considerably lower due to the trough-shaped indentations 12 than in areas of the frame without indentations.
  • a kind of "joint” is provided, which allows the particularly advantageous ball guide characteristic of the racket.
  • Another advantage of the racket according to the invention lies in its improved damping.
  • FIGS. 6a and 6b Relative speed values of the racket according to the invention are shown graphically at different frame positions compared to conventional rackets.
  • the marking on the in the diagrams according to FIGS. 6a and 6b each right schematically illustrated racket indicates the impact position of the ball with respect to the longitudinal axis of the racket, which extends through the handle portion to. According to FIG.
  • FIGS. 7a and 7b In each case, the contact time or dwell time of the ball is shown on the fabric of the racket in milliseconds above the racket position, wherein the impact positions of the ball in the same manner as in the Figures 6a and 6b are shown and turn on Figure 7a Ball impact points laterally of the longitudinal axis of the racket and at FIG. 7b central ball impact points were measured.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Laminated Bodies (AREA)
  • Golf Clubs (AREA)
  • Moulding By Coating Moulds (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Prostheses (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Claims (14)

  1. Raquette pour jeux de balle avec un cadre (4) qui présente une tête de raquette (6) et une section de poignée (10) reliée à celle-ci et qui est formé par un profilé de cadre, où la tête de raquette (6) définit un plan de mise de cordes, et le profilé de cadre présente dans la zone de la tête de raquette (4) quatre déformations en forme de creux (12), qui sont disposés d'une manière opposée par paires et d'une manière sensiblement symétrique à l'axe longitudinal de la raquette (2), où chaque paire de déformations en forme de creux opposées (12) présente une ouverture (14) qui s'étend sensiblement perpendiculairement au plan de mise de cordes de la raquette (2) et s'étend à travers le profilé de cadre, caractérisée en ce que sont prévues une première paire de déformations en forme de creux (12) entre 2 heures et 4 heures et une deuxième paire de déformations en forme de creux entre 8 heures et 10 heures, où deux des déformations en forme de creux (12) sont réalisées à un côté avant de la raquette et deux des déformations en forme de creux (12) d'une manière opposée à un côté arrière de raquette.
  2. Raquette selon la revendication 1, où une première paire de déformations en forme de creux (12) est réalisée à peu près à 3 heures et une deuxième paires de déformations en forme de creux (12) à peu près à 9 heures, où deux des déformations en forme de creux (12) sont prévues à un côté avant de la raquette et deux des déformations en forme de creux (12) d'une manière opposée à un côté arrière de la raquette.
  3. Raquette selon la revendication 1, où une première paire de déformations en forme de creux (12) est déplacée de la position de 3 heures selon environ 2 à 3 cm vers une extrémité libre de la raquette (2), et une deuxième paire de déformations en forme de creux (12) de la position de 9 heures selon environ 2 à 3 cm vers l'extrémité libre de la raquette (2), où deux des déformations en forme de creux (12) sont réalisées à un côté avant de la raquette et deux des déformations en forme de creux (12) d'une manière opposée à un côté arrière de la raquette.
  4. Raquette selon l'une des revendications 1 à 3, où les déformations en forme de creux (12) opposées ont chacune une profondeur (T) de sorte que lors d'une observation parallèle au plan de mise de cordes, une hauteur de cadre réduite (h) est obtenue qui se situe à peu près dans la plage entre 60% et 95%, de préférence entre 70% et 90%, selon une plus grande préférence à environ 80%, d'une hauteur de cadre (H) au voisinage des déformations en forme de creux (12).
  5. Raquette selon l'une des revendications 1 à 4, où une longueur (L) de chaque déformation en forme de creux (12) le long du profilé de cadre se situe dans la plage entre 10 mm et 30 mm, de préférence entre 12 mm et 25 mm et selon une plus grande préférence entre 15 mm et 23 mm.
  6. Raquette selon l'une des revendications 1 à 5, où chacune des déformations en forme de creux, lors d'une observation parallèle au plan de mise de cordes, est réalisée sensiblement en forme d'arc de cercle et présente un rayon d'arc de cercle dans la plage entre 15 mm et 25 mm, de préférence d'environ 20 mm.
  7. Raquette selon l'une des revendications 1 à 6, où l'ouverture est réalisée d'une manière circulairement cylindrique et présente un diamètre (D), qui se situe dans la plage entre 2 mm et 8 mm, de préférence entre 3 mm et 6 mm.
  8. Raquette selon l'une des revendications 1 à 7, où est prévu dans l'ouverture (14) un insert (16) sensiblement tubulaire pour fermer vers l'intérieur le profilé de cadre.
  9. Raquette selon l'une des revendications 1 à 8, où le profilé de cadre présente dans la zone des quatre déformations en forme de creux (12) une ou plusieurs couches de renforcement.
  10. Raquette selon la revendication 9, où la couche de renforcement présente un tissu de fibres de carbone, de verre ou d'aramide et/ou un préimprégné unidirectionnel et est disposée selon ± 45° à l'extension du cadre.
  11. Procédé de fabrication d'une raquette, en particulier selon l'une des revendications 1 à 10, comprenant les étapes consistant à:
    a) réalisation d'un cadre (4) constitué d'un profilé de cadre, qui présente une tête de raquette (6) et une section de poignée (10) reliée à celle-ci; et
    b) prévoir quatre déformations en forme de creux (12) qui sont disposées par paires d'une manière opposée et sensiblement symétriquement à l'axe longitudinal de la raquette (2) à la tête de raquette (6), où sont prévues une première paire de déformations en forme de creux (12) entre 2 heures et 4 heures et une deuxième paire de déformations en forme de creux entre 8 heures et 10 heures, où deux des déformations en forme de creux (12) sont réalisées à un côté avant de la raquette et deux des déformations en forme de creux (12) d'une manière opposée à un côté arrière de la raquette, où par creux (12) au moins une ouverture (14) est ménagée dans le profilé de cadre.
  12. Procédé selon la revendication 11, où les déformations en forme de creux (12) sont réalisées pendant le moulage du profilé de cadre simultanément avec le cadre (4).
  13. Procédé selon la revendication 11 ou 12, où l'ouverture est réalisée par perçage, fraisage ou sciage.
  14. Procédé selon l'une des revendications 11 à 13, où est inséré dans l'ouverture un insert sensiblement tubulaire pour fermer le profilé de cadre vers l'intérieur.
EP05001049A 2004-01-23 2005-01-19 Raquette pour jeux de balle et méthode de fabrication Not-in-force EP1557204B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004003526 2004-01-23
DE102004003526A DE102004003526B3 (de) 2004-01-23 2004-01-23 Schläger für Ballspiele und Herstellungsverfahren

Publications (3)

Publication Number Publication Date
EP1557204A2 EP1557204A2 (fr) 2005-07-27
EP1557204A3 EP1557204A3 (fr) 2005-11-16
EP1557204B1 true EP1557204B1 (fr) 2008-03-26

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EP05001049A Not-in-force EP1557204B1 (fr) 2004-01-23 2005-01-19 Raquette pour jeux de balle et méthode de fabrication

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US (1) US7140984B2 (fr)
EP (1) EP1557204B1 (fr)
CN (1) CN100457220C (fr)
AT (1) ATE390181T1 (fr)
DE (2) DE102004003526B3 (fr)
TW (1) TWI340045B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004003526B3 (de) * 2004-01-23 2005-09-22 Head Technology Gmbh Schläger für Ballspiele und Herstellungsverfahren
DE102004003528B3 (de) * 2004-01-23 2005-07-21 Head Technology Gmbh Schläger für Ballspiele und Herstellungsverfahren
WO2007088070A2 (fr) 2006-02-02 2007-08-09 Head Technology Gmbh Raquette
DE102006004849B4 (de) * 2006-02-02 2008-01-03 Head Technology Gmbh Ballspielschläger mit Schwingungseinrichtung
DE102006004863B4 (de) * 2006-02-02 2007-12-27 Head Technology Gmbh Schläger für Ballspiele
EP3150260B1 (fr) * 2007-10-24 2019-05-15 Head Technology GmbH Système et procédé d'utilisation de matériel d'épaississement par cisaillement dans le matériel sportif
US10751581B2 (en) 2018-03-12 2020-08-25 Wilson Sporting Goods Co. Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1451836A (en) * 1921-08-02 1923-04-17 Dayton Steel Racquet Company Racket for tennis and similar games
US4353551A (en) 1979-07-26 1982-10-12 Battelle Development Corporation Tennis racket with frame mounted oscillatable weights
US5014987A (en) * 1982-09-27 1991-05-14 Soong Tsai C Frame for sports racket
GB2203653B (en) * 1987-04-16 1991-02-27 Lo Kun Nan A racket with improved throat portion
US5152526A (en) * 1990-04-03 1992-10-06 Soong Tsai C Frame for sports rackets
US5100136A (en) 1990-11-23 1992-03-31 Chen Dennis C S Structure of racket
CN1096706A (zh) * 1993-06-21 1994-12-28 曾国男 新颖球拍
DE69517619T2 (de) * 1994-04-11 2001-02-15 Wavex Corp Schläger mit unebenem Rahmen
CN2233759Y (zh) * 1995-04-27 1996-08-28 柳晳淏 具有凹凸型拍框的球拍
GB2334894A (en) 1998-03-04 1999-09-08 Dunlop Slazenger Group Ltd Mounting weights on games rackets
JP3474792B2 (ja) * 1998-12-18 2003-12-08 美津濃株式会社 ラケットフレーム
US6447412B1 (en) * 2000-04-18 2002-09-10 Ef Composite Technologies, L.P. Sports racket with undulations in frame interior surface
JP3416634B2 (ja) 2000-09-21 2003-06-16 住友ゴム工業株式会社 ダイナミックダンパー
US6761651B2 (en) * 2002-11-22 2004-07-13 Chin-Dong Pai Aluminum tennis racket
DE102004003528B3 (de) * 2004-01-23 2005-07-21 Head Technology Gmbh Schläger für Ballspiele und Herstellungsverfahren
DE102004003526B3 (de) * 2004-01-23 2005-09-22 Head Technology Gmbh Schläger für Ballspiele und Herstellungsverfahren

Also Published As

Publication number Publication date
DE102004003526B3 (de) 2005-09-22
TWI340045B (en) 2011-04-11
US20050164812A1 (en) 2005-07-28
DE502005003402D1 (de) 2008-05-08
US7140984B2 (en) 2006-11-28
TW200524657A (en) 2005-08-01
CN100457220C (zh) 2009-02-04
CN1647833A (zh) 2005-08-03
EP1557204A2 (fr) 2005-07-27
EP1557204A3 (fr) 2005-11-16
ATE390181T1 (de) 2008-04-15

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