EP3174610B1 - Ballschlaggerät und verfahren zu seiner herstellung - Google Patents

Ballschlaggerät und verfahren zu seiner herstellung Download PDF

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Publication number
EP3174610B1
EP3174610B1 EP15726970.5A EP15726970A EP3174610B1 EP 3174610 B1 EP3174610 B1 EP 3174610B1 EP 15726970 A EP15726970 A EP 15726970A EP 3174610 B1 EP3174610 B1 EP 3174610B1
Authority
EP
European Patent Office
Prior art keywords
head frame
retaining brackets
ball
retaining
predetermined length
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
EP15726970.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3174610A1 (de
Inventor
Hubert Nagler
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.)
TEC Sportmanagement AG
Original Assignee
TEC Sportmanagement AG
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 TEC Sportmanagement AG filed Critical TEC Sportmanagement AG
Publication of EP3174610A1 publication Critical patent/EP3174610A1/de
Application granted granted Critical
Publication of EP3174610B1 publication Critical patent/EP3174610B1/de
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
    • 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
    • A63B49/022—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
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/10—Frames made of non-metallic materials, other than wood
    • 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
    • A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres

Definitions

  • the present invention relates to a ball impact device, in particular a tennis, squash or badminton rackets, comprising a head face comprising a striking surface, which is hollow and made of plastic, in particular of a fiber-reinforced plastic, and a molded handle with handle, wherein the striking surface is determined by at least one cross-stretched side, which forms substantially parallel to each other on the head frame mounted string sections, wherein the anchoring of the string sections on the head frame via brackets, which are fixed to the inside of the head frame so that they are each substantially perpendicular to Extend striking surface, whereby the clamped in the brackets ends of the string sections are laterally deflected upon impact of a ball. Furthermore, the invention relates to a method for producing such a ball impact device.
  • ball impact device or “bat” for the purpose of the present invention, in particular tennis, squash or badminton rackets to be understood;
  • the meaning of the term is not limited to this as such, but refers to any type of ball impact devices, which have a striking surface and the striking surface is determined by at least one cross-stretched string.
  • a ball impact device of the type mentioned is for example from the EP 2 164 579 B1 known.
  • This has a striking surface comprising a head frame, which is hollow and made of a fiber-reinforced plastic, and on which a shaft is formed with handle, wherein the striking surface is determined by at least one cross-tensioned string, which is substantially parallel to each other on the head frame forms attached strings sections.
  • US3912267 and US 3966207 disclose a ball impact device with a head frame comprising a striking surface, the striking surface being determined by cross-tensioned strings, the anchoring of the strings to the head frame via retaining clips open to either side of the striking surface or from one of the two sides the striking surface is freely accessible for clamping the string and thus formed as a hook.
  • US 7371197 discloses a ball impact device comprising a head frame comprising a striking surface, the striking surface being defined by cross-strained strings, the anchoring of the strings to the head frame via retaining clips which are open towards one of the two sides of the striking surface and thus as two openings. It is therefore an object of the present invention to provide a ball impact device and a method for its production, in which the anchoring of the string sections on the head frame via brackets, which can be arranged precisely and easily in the head frame and are also suitable for a mass production process.
  • a ball impact device with the features of claim 1 and in terms of the method by the subject of claim 12. Accordingly, it is provided that a ball impact device is specified in which the headband to one of the two strings of the club face open or from one of the two strings of the club face for clamping the the striking surface defining string are freely accessible, and in which a fixing portion of the retaining clip between two defining a head frame frame halves is embedded.
  • the solution according to the invention has a number of significant advantages over the ball impact devices known from the prior art.
  • a covering of the ball impact device is quick and easy to make.
  • a high-precision string pattern is achieved, which has excellent playability.
  • the attachment portion of each retaining clip is embedded between two frame halves defining the head frame. This offers the advantage that by using prefabricated semi-finished products, a head frame can be produced quickly and easily using common means. The corresponding embedding results in a permanently durable anchoring of the retaining clip in the head frame, which withstands even high repeated loads without further ado.
  • a set of brackets for anchoring the string sections on the head frame, the first number of brackets having a first predetermined length in the circumferential direction of the head frame, at least a second number of brackets with a circumferentially of the head frame second predetermined length and optionally comprises at least a third, fourth and fifth number of headband with a third, fourth and fifth predetermined length in the circumferential direction of the head frame.
  • Ball impact devices usually have an elliptical shape, on the two major semi-axes starting from the center is in each case the first number of headband with the smallest predetermined length. These determine the size of the usually consisting of mostly equilateral rectangles string pattern.
  • headband with different length in the circumferential direction of the head frame allow a substantially same and exact string pattern.
  • the string is the only material that comes into direct contact with the ball.
  • the stringing therefore decides on game characteristics such as control, spin, power, feel and comfort of the ball impact device.
  • a high stringing weight guarantees more control, but requires more power; softer clothing can be used to create greater power and maximum power of the ball with less effort.
  • a soft covering is approximately between 18 and 21 kg, a normal covering is between about 22 and 25 kg and a hard covering is roughly between 26 and 28 kg.
  • While there are a variety of string patterns (for example, 14x16, 14x18, 16x15, 16x16, 16x17, 16x18, 16x19, 16x20, 18x18, 18x19, 18x20 and 18x21, where the first digit of the number of longitudinal strings and the second digit determines the number of cross strings ), the 16x19 and 18x20 string patterns differ in that 16x19 usually provides more power and spin, while 18x20 provides more control with longer string durability.
  • Head frame sizes are often in the classes midsize ( ⁇ 97 sq inch / 625 cm 2), Midplus (98-105 sq inch / 630-675 cm 2), oversize (106-115 sq inch / 680-740 cm 2) and Super oversize (> 116 sq in / 750 cm 2 ).
  • midsize ⁇ 97 sq inch / 625 cm 2
  • Midplus 98-105 sq inch / 630-675 cm 2
  • oversize 106-115 sq inch / 680-740 cm 2
  • Super oversize > 116 sq in / 750 cm 2 .
  • the number of strings and the type of clothing can vary.
  • the number and used width of the headband depends on the head frame geometry and specifically adapted to this.
  • the headband used according to the invention each comprise in the state attached to the head frame a protruding from this bracket section and an anchored within the head frame mounting portion.
  • the outstanding bow section is used for easy and precise hooking of the string during stringing.
  • the attachment portion which lies within the head frame, offers the advantage of a secure anchoring of the retaining clip in the head frame.
  • the fastening section of each retaining clip has longitudinal and transverse structures for the positive and non-positive anchoring within the head frame.
  • "Longitudinal and transverse structures" mean that the attachment portion z. B. has a hineinertiernden in the head frame longitudinal section, are integrally formed on the transverse webs or -vorsprünge.
  • the bracket section is, for. B. either to one side open or freely accessible from one side, in particular hook-shaped, preferably oval-hook-shaped.
  • the head frame is formed by two tubular prepregs defining the frame halves, which define a double-walled peripheral approximately parallel to the impact surface extending crosspiece, the mounting portions of the headband between each of the double-walled transverse web defining wall portions of the two tubular prepregs embedded and thus firmly anchored.
  • a positive and positive anchoring of the headband in the head frame is obtained in a simple manner.
  • the prepregs When the prepregs are inflated, they form fit against the attachment sections of the retaining clips. This form-fitting is fixed by curing, so that a long-lasting and robust anchoring of the headband in the head frame is created.
  • the inner radius of the headband is in a range of 0.5 to 1.9 mm, in particular 0.5 to 1.0 mm.
  • This radius is adapted to the diameter of commonly used strings, so that the clamped on the brackets ends of the string sections are deflected laterally upon impact of a ball and excessive wear due to friction of the string is avoided during the Auslenkvorgangs.
  • the surface of the headband is treated on the side facing the string with a surface finishing process, which reduces the coefficient of friction of the interacting with the string surface of the headband.
  • the first predetermined length (L1) of the first number of retaining clips lies in a range of 9-11 mm and / or the first number of retaining clips of the first predetermined length (L1) is 12-20, in particular 16
  • / or the second predetermined length (L2) of the second number of holding straps is in a range of 10 - 11 mm and / or the second number of holding straps of the second predetermined length (L2) is 6 to 14, in particular 10
  • / or the third predetermined length (L3) of the third number of brackets is in a range of 11-13 mm
  • / or the third number of brackets of the third predetermined length (L3) is 2 to 10
  • 6, and / or the fourth predetermined length (L4) of the fourth number of sheaths is in a range of 16 - 18 mm and / or the fourth number of sheaths in the fourth predetermined length (L4) is 2 to 8, especially 4, and / or the fifth predetermined length (LS) of the fifth
  • the best possible adaptation of the clothing pattern to the shaping of the head frame is achieved in order to achieve a desired clothing pattern. Furthermore, this creates an exact, rectangular string pattern within the main beat area (sweet spot).
  • the main beat area is the area of the string pattern in which the string is determined by substantially identical or equally sized string squares. Outside this range, the cross-stretched string sections each limit more or less long rectangular fields.
  • the retaining clips of predetermined length are each marked with a character provided for the purpose of typing, in particular optically and / or haptically recognizable or else readable in any other readable or mechanically evaluable form character, the type of a predetermined length (LI, L2, L3; L4; L5).
  • this can also be advantageous in the case of manual processing and in particular when equipping a holding device for the holding clamps, since rapid and targeted equipping of the holding device with Haitebügein provided at the respective position is made possible.
  • the headband For easier positioning of the headband these are preferably first inserted into an insertion device, and then positioned together with the insertion device relative to the holding device for the headband, before subsequently the headband are each fixed in the region of their temple sections within the holding device. By inserting is avoided that the headband when fixing the same in the holding device change its predetermined position, eg slip.
  • a lateral gap is defined between the retaining clip and the head frame, the width of this gap being in the range from 1.0 to 2.0 mm, in particular in a range from 1.5 to 1.7 mm.
  • This gap allows a lateral clamping of the string and is dimensioned so that the string can be easily hooked to the strap section of the headband.
  • the ends of the headband, over which the striking surface defining string is deflected in each case, are rounded, whereby a wear or damage of the string is excluded in the game mode and the playing characteristics of the racket are further improved.
  • a method for producing a ball impact device in which the headband relative to a mold, within which a head frame of a ball impact device is made, are positioned so that the mounting portions of the headband in the manufacture of Head frame in these protrude and be enclosed by the material thereof.
  • a method for producing a ball impact device offers the advantage of a quick and easy manufacturability of a head frame with anchored in this bracket.
  • the head frame can be made of injection-molded, but in particular also using a fiber-reinforced plastic.
  • the holding device ensures that the headband keep its intended positions relative to the head frame to be produced. Committee in the manufacturing process is thus largely avoided.
  • the predetermined position and orientation of the headband are always ensured compared to the prior art. Particularly helpful in this context is the placement of a loading device with brackets, by means of a secure and accurate positioning of the headband within the aforementioned holding device is possible without the risk that when fixing the headband in the holding device, the headband change its position.
  • a method for producing a ball impact device in which the frame, which consists of head frame with brackets, and shaft with handle and Heart exists, is manufactured in a procedure.
  • Fig. 1 shows a cross-section AA through the head frame 2 of a ball impact device 1 according to the invention within a manufacturing mold.
  • a headband 20 between two halves 4, 6 of a head frame 2 is embedded.
  • the head frame 2 is formed by two frame halves 4, 6 respectively of two tubular prepregs 4, 6.
  • the section shows a double-walled circumferential transverse to the impact surface 12 approximately transverse web 40.
  • the headband 20 is held for positioning between a on the upper holding tool 34 and a lower holding tool 32.
  • the holding device 30 serves the positionally correct holding of the headband (s) 20 between an upper 52 and a lower 50 head frame shape such that the headband 20 with its mounting portions 22 in a region between the two prepreg tubes 4, 6 are included.
  • the two prepreg tubes 4, 6 are then formed under pressure and heat supply between an upper mold 52 and a lower mold 50 and cured.
  • the mounting portions 22 of the headband 20 are each embedded between the double-walled transverse web 40 defining wall portions 42 of the two tubular prepregs 4, 6 and firmly anchored.
  • the two wall sections 42 of the two prepregs 4, 6 merge in the production of the head frame to a cross-piece material 40 of uniform material, while the fastening portions 22 of the headband are firmly embedded and anchored in this cross-web 40 then uniform material.
  • each headband 20 has a mounting portion 22 embedded in the head frame 2.
  • the attachment portion 22 consists essentially of a longitudinal structure 26 and a transverse structure 27. At the intersection of the longitudinal and transverse structure 26, 27 of each attachment portion 22 is a character attached to the purpose of typing 14 - Fig. 1 the number "2" - provided.
  • the character 14 attached for the purpose of typing corresponds to the type or length (L1 to L5) of the retaining clip 20 in the circumferential direction of the head frame.
  • the attached sign serves essentially for identification and later placement in the holding device 30. For this purpose, a plurality of holding clips 20 are fixed in the holding device 30 and then positioned on the first prepreg tube 4 in the first, lower head frame form 50.
  • the mold 50, 52 are closed and thereby the headband 20 between the first and a second prepreg tube 4, 6 from which the head frame 2 is made, positioned.
  • a shaping and curing of the prepreg tubes 4, 6 in the closed head frame shape under pressure and heat supply whereby the mounting portions 22 of the headband 20 force and form-fitting between the two formed from the prepreg tubes 4, 6 head frame halves are embedded.
  • the finished manufactured head frame 2 can be removed from the mold with the anchored to the inside of the frame retaining clips 20.
  • Fig. 2 shows a plan view of a ball impact device 1 of an embodiment of the invention.
  • the racket 1 consists essentially of the head frame 2, of the string arranged therein, which defines a striking surface 12 (formed from a plurality of intersecting string sections), and a racket shaft 17 comprising a handle 16 and a so-called heart 18 , via which the shaft is connected to the head frame.
  • the heart 18, which consists of two outgoing from the shaft 17 fork-shaped diverging webs or Prepegschläuchen 4, 6 (s. Fig. 1
  • the illustrated embodiment which comprises an outwardly closed hollow profile, consists of a suitable for the intended application of a sports equipment material, for example made of fiber-reinforced plastic.
  • the striking surface 12 is replaced by a string 8 (s. Fig. 3 ) is formed, which is held at the head frame 2 at a predetermined voltage.
  • the string is attached and tensioned by means of a tensioning device on the frame.
  • the striking surface 12 has a checkerboard-like covering pattern consisting essentially of identical squares.
  • the aim of a racket according to the invention produced is a high degree of accuracy in the positioning of the headband 20 (s. Fig. 1 ), so that the aforementioned string pattern is available. Outside the main striking area 13, the string pattern deviates from the checkerboard shape.
  • the intersecting string sections then bound more or less long rectangles.
  • Fig. 3 shows an enlargement of an embedded in the head frame 2 retaining bracket 20.
  • a lateral gap "S" is defined between headband 20 and head frame 2 .
  • the inside of the head frame 2, firmly anchored in the head frame 2 mounting portion 22 is indicated accordingly.
  • a string 8 spans the two ends of the protruding from the head frame bracket portion 24 of the retaining clip 20.
  • the headband has in particular, but not exclusively, in the region of the end-side rounded edges 29. The rounded corners prevent chafing of string 8 and unintentional injury thereto by sharp edges, as is common in conventional rackets with holes in the head frame.
  • This deflection surface is preferably bent in the circumferential direction of the head frame in the direction of the impact surface or in the direction away from the inside of the head frame, wherein the radius is in the range of 80-150 mm.
  • Fig. 4 shows a first type of headband 20 and a fifth type of headband 20 each of different predetermined length L1 and L5.
  • the different length L of the adaptation to different frame geometries which are generally elliptical in the rule, and may be different sizes. In general, this requires a larger number of holding straps of a smaller predetermined length and a smaller number of holding straps of a larger predetermined length.
  • Fig. 5 shows a perspective of a retaining clip 20, an end view with a frontally attached typing character "2" and a plan view of this retaining clip 20.
  • the plan view shows a line of symmetry 47 and the rounded corners 29 of the bracket portion 24 (s. Fig. 3 ).
  • At an intersection of the longitudinal and transverse structure 26, 27 of the mounting portion 22 of the retaining clip 20 is a for the purpose of typing attached character 14 - here number "2" - provided.
  • the character 14 attached for the purpose of typing indicates the type or length L1, etc., of a retaining clip 20.
  • the attached sign 14 essentially serves for identification and later processing in a positioning and holding device 30 (see FIG. Fig. 7 ).
  • the longitudinal and transverse structures 26, 27 of the attachment portion 22 (s.
  • Fig. 3 serve the positive and positive anchoring of the retaining clip 20 in the head frame and are optimized and tuned with respect to their shape to the material of the plastic used, in particular a prepreg used for use hose, and its wall thickness.
  • the plastic rests positively on the outside of the retaining clip 20, without voids or gas bubbles.
  • the pressure during inflation of the prepreg tube must be selected together with the curing temperature used such that this is ensured.
  • the aforementioned parameters must be selected accordingly, thereby the force transmission necessary for typical loads of a ball impact device between the head frame and the retaining clips 20 embedded therein is positively and positively absorbable.
  • FIG. 6 and 7 show a lower holding tool 32 and an upper holding tool 34, which together form a holding device 30.
  • the headband 20 are inserted in a preferred manner accurately.
  • a defined number of retaining clips 20 are inserted, for example, in the lower holding tool 32 and then the upper holding tool 34 fit over it.
  • the lower holding tool 32 has a plurality of threaded holes 35, whereby the upper and lower holding tool are screwed together, and the headband 20 are held against mechanical stress in a desired position.
  • the holding tool may have a plurality of material recesses 38.
  • Fig. 8 shows a lower mold 50 for producing a ball impact device 1 with an inserted holding device 30 with brackets 20.
  • compressed air inputs 54 are provided, via which the prepreg tubes 4, 6 (s. Fig. 1 ) can be inflated in the production process of the invention.
  • Fig. 9 shows a perspective view of a yet to be demoulded, but essentially finished ball impact device 1, with head frame 2, heart 18 and shaft 17 with handle 16 and the head frame 2 firmly anchored brackets 20th
  • Fig. 10 an alternative embodiment for a embedded within a transverse web 40 of the head frame 2 headband 23 is shown in cross section.
  • the bracket 23 is formed in cross-section semi-oval-shaped, with the longer branch with the larger radius of curvature as a mounting portion and the short branch with a smaller radius of curvature than on the inside of the head frame on this freely projecting bracket section is used.
  • This bow section is freely accessible from one side of the club face, ie the clothing of the ball impact device, eg tennis racket, is made via this free access or via the gap between the free end of the bow section and the inside of the head frame facing this free end.
  • the production of the above alternative is carried out in a similar manner as the production of the embodiment according to the Fig.
  • FIG. 11 is still an example of an insertion device 44 shown by means of which the headband is held positionally secure and introduced into the holding device 30 so that when screwing the holding tools 32, 34, the headband 20 can not change their predetermined position.
  • the insertion device 44 facilitates the positioning of the retaining clip 20 in the holding device 30.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Golf Clubs (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
EP15726970.5A 2014-07-29 2015-06-05 Ballschlaggerät und verfahren zu seiner herstellung Not-in-force EP3174610B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014110656.3A DE102014110656A1 (de) 2014-07-29 2014-07-29 Ballschlaggerät und Verfahren zu seiner Herstellung
PCT/EP2015/062544 WO2016015906A1 (de) 2014-07-29 2015-06-05 Ballschlaggerät und verfahren zu seiner herstellung

Publications (2)

Publication Number Publication Date
EP3174610A1 EP3174610A1 (de) 2017-06-07
EP3174610B1 true EP3174610B1 (de) 2019-06-05

Family

ID=53284271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15726970.5A Not-in-force EP3174610B1 (de) 2014-07-29 2015-06-05 Ballschlaggerät und verfahren zu seiner herstellung

Country Status (6)

Country Link
US (1) US20170203163A1 (zh)
EP (1) EP3174610B1 (zh)
JP (1) JP2017523894A (zh)
CN (1) CN106794369A (zh)
DE (1) DE102014110656A1 (zh)
WO (1) WO2016015906A1 (zh)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966207A (en) * 1973-06-25 1976-06-29 Pass Roger D String system for a game racket
US3912267A (en) * 1974-02-13 1975-10-14 Edwin J Lyon Game racket
JPS51133557U (zh) * 1975-04-18 1976-10-28
GB2172238B (en) * 1985-03-12 1989-12-28 Diversified Prod Racquets
US6440015B1 (en) * 2001-08-16 2002-08-27 Chen-Chung Chang String fastener for a racket
US6800239B2 (en) * 2002-02-26 2004-10-05 Prince Sports, Inc. Method of manufacturing a two piece sports racquet
ITBG20030016A1 (it) * 2003-02-28 2004-09-01 Benetton Group S P A Ora Benetton Trading Usa In Struttura di racchetta sportiva migliorata con aperture sul telaio
US20060211526A1 (en) * 2003-05-12 2006-09-21 Hauptman Madeline M Convertible racket for multiple stringing configurations
DE602005010596D1 (de) * 2005-11-29 2008-12-04 Prince Sports Inc Sportschläger mit Einsätzen zur Befestigung der Bespannung
US7371197B1 (en) * 2007-05-25 2008-05-13 Yuan Min An Enterprise Co., Ltd. Safety racket
EP2164579B1 (de) 2007-07-04 2013-01-16 TEC Sportmanagement AG Ballschlaggerät
JP2011072748A (ja) * 2009-10-02 2011-04-14 Go Man オーダーに応じるゴルフクラブヘッドの重り調整装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN106794369A (zh) 2017-05-31
US20170203163A1 (en) 2017-07-20
JP2017523894A (ja) 2017-08-24
EP3174610A1 (de) 2017-06-07
WO2016015906A1 (de) 2016-02-04
DE102014110656A1 (de) 2016-02-04

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