JP2001104520A - Golf club set - Google Patents
Golf club setInfo
- Publication number
- JP2001104520A JP2001104520A JP28429099A JP28429099A JP2001104520A JP 2001104520 A JP2001104520 A JP 2001104520A JP 28429099 A JP28429099 A JP 28429099A JP 28429099 A JP28429099 A JP 28429099A JP 2001104520 A JP2001104520 A JP 2001104520A
- Authority
- JP
- Japan
- Prior art keywords
- head
- golf club
- gravity
- sole
- center
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は打ち損じが少ないゴ
ルフクラブセット、特にヘッドが中空の金属によって形
成された複数の番手よりなる、打ち損じが少ないフェア
ウエイウッドセットに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club set having less damage, and more particularly to a fairway wood set having a plurality of counts whose heads are formed of hollow metal.
【０００２】[0002]
【従来技術】ゴルフ用フェアウエイウッドは、通常ヘッ
ドのロフト角につき凡そ１５〜３０°の範囲を、１．５
〜４°刻みに変化形成した複数本より成るクラブのセッ
ト（例えば♯３〜♯９の番手）によって構成されている
ことは知られている通りである。2. Description of the Related Art A fairway wood for golf usually has a range of about 15 to 30 degrees per loft angle of a head, which is 1.5 to 30 degrees.
It is known that the golf club is constituted by a set of clubs (for example, # 3 to # 9) consisting of a plurality of clubs which are formed at intervals of ４4 °.
【０００３】クラブでボールをヒットしたとき、ボール
に対し最も効率良くエネルギーを伝達させ得るヘッドの
フエース面上の位置は、ヘッド内重心位置よりフェース
面に対し垂直に下ろした点（以下、重心投影点と云
う）、またはその近傍に存在する。そしてこの重心投影
点のフェース面上における位置は、ロフト角が小さいド
ライバーの場合、フェース面の幾何学上の中心点か、そ
れよりややトップ部に寄った部分に通常設定されてい
る。[0003] When a ball is hit with a club, the position on the face surface of the head at which energy can be transmitted to the ball most efficiently is a point that is lowered vertically from the center of gravity in the head to the face surface (hereinafter referred to as the center of gravity projection). Point) or near it. In the case of a driver having a small loft angle, the position of the point of projection of the center of gravity on the face surface is usually set to the geometric center point of the face surface or to a portion slightly closer to the top than that.
【０００４】一方フェアウエイウッドの場合は、ドライ
バーに比べてロフト角がクラブの番手に応じて増大する
ため、フェース面上重心投影点の位置が、フェース面の
中心よりもヘッドのトップ部方向へ番手が大きくなるに
連れ移行し、ヘッドの体積がクラブの番手増大に伴い減
少する傾向があることもあって、上記重心投影点は、フ
ェース面の上端から外れてしまうことがしばしばであ
る。このようなヘッドをもつクラブを用いると、重心投
影点より下方部分でボールをヒットすることになるた
め、予期した以上にスピンがボールにかかり、ボールが
高く上がり過ぎて距離が出ない上、打感及び打球音が著
しく低下すると云う問題が生じる。On the other hand, in the case of fairway woods, the loft angle increases in accordance with the club number as compared with the driver, so that the position of the center of gravity projection point on the face is shifted toward the top of the head from the center of the face. The center of gravity projection point often deviates from the upper end of the face surface because the head volume tends to decrease as the club number increases and the head volume tends to decrease as the club number increases. When a club having such a head is used, the ball hits at a portion below the projection point of the center of gravity, so the spin is applied to the ball more than expected, and the ball rises too high to reach a distance, and There is a problem that the feeling and hitting sound are significantly reduced.
【０００５】ロフト角の増加に準じて、ヘッドの重心投
影点が規則的にフェース面の上方へ移行するだけなら、
それによる上記問題を承知の上でプレイ時にクラブを選
択すれば、打ち損じの被害は比較的少なくすませるが、
フェース面上の重心投影点の位置がクラブの番手と無関
係にばらばらであったり、その中に重心投影点外れのも
のが加わると問題が複雑になる。何れにしても、従来フ
ェアウエイフッドに関しては、フェース面に対する重心
投影点の位置関係について殆ど考慮が払われていなかっ
た。According to the increase in the loft angle, if the point of projection of the center of gravity of the head only moves regularly above the face surface,
If you choose a club when playing with knowledge of the above problems, you can reduce the damage of the damage relatively,
The problem is complicated when the positions of the projected points of the center of gravity on the face surface are different irrespective of the club number, and when the positions outside the projected points of the center of gravity are added thereto. In any case, in the conventional fairway, little consideration has been given to the positional relationship of the center of gravity projection point with respect to the face surface.
【０００６】[0006]
【発明が解決しようとする課題】本発明は上記問題点に
鑑みなされたもので、ボールに対し普通にヒットさえす
れば、ロフト角に応じた飛距離を得ることができ、その
上フェアウエイ上においてボールをとらえやすい、打ち
損じの少ないゴルフクラブセットを提供することを目的
とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems. As long as the ball hits the ball normally, a flight distance corresponding to the loft angle can be obtained. It is an object of the present invention to provide a golf club set which is easy to catch a ball and has less damage.
【０００７】[0007]
【課題を解決するための手段】本発明は、シャフトの先
端部にヘッドを備え、このヘッドのフェース面のロフト
角が１５〜３０°の範囲内で異なる複数の番手により構
成されたゴルフクラブセットにおいて、上記ヘッドは少
なくともその主要部分が比較的比重の小さい金属よって
形成されると共に、ヘッドの重心を上記フェース面に対
し垂直に下ろしたフェース面位置のソールよりの高さ
が、上記クラブの番手間を通じほぼ一定であることを特
徴とするゴルフクラブセットである。According to the present invention, there is provided a golf club set comprising a head at the tip of a shaft, the head having a face surface having a loft angle in the range of 15 ° to 30 °. In the above head, at least a main part of the club is formed of a metal having a relatively small specific gravity, and the height of the club at the face surface position where the center of gravity of the head is lowered perpendicular to the face surface is higher than the sole of the club. It is a golf club set characterized by being substantially constant through effort.
【０００８】[0008]
【発明の実施の形態及び実施例】本発明において上記重
心のフェース面位置高さ、即ちフェース面上重心投影点
の高さは２０〜２３mm の範囲が好ましい。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the height of the position of the center of gravity on the face, that is, the height of the point of projection of the center of gravity on the face is preferably in the range of 20 to 23 mm.
【０００９】ソールについては、その肉厚をクラブの番
手が大きくなるに従って厚く形成することができる。ま
たソールにつき、ヘッドを構成するその他の部分よりも
比重の大きい材料によって形成することもできる。ヘッ
ドのソール以外の部分をチタンやアルミ等比重が５以下
の金属材料を用いる場合、ソールの部分は、ステンレ
ス、銅、真鍮、鉄等、比重がより大きい金属材料の単
独、または複数種類を適宜組み合わせて形成することが
できる。The thickness of the sole can be increased as the club number increases. Further, the sole may be formed of a material having a higher specific gravity than other parts constituting the head. When a metal material having a specific gravity of 5 or less such as titanium or aluminum is used for a portion other than the sole of the head, the sole portion may be appropriately selected from a single metal material having a higher specific gravity, such as stainless steel, copper, brass, and iron, or a plurality of types. They can be formed in combination.
【００１０】ソールのトウ側及びヒール側部分にヘッド
の重心位置調整用錘を配置することができる。重心位置
調整用錘は、これに加え、または単独にソール上のトウ
とヒールの中間部に設けることも可能である。この場合
上記錘は、ヘッドを構成する材料、特にソール構成材料
よりも比重の大きい材料を用いることが好ましい。[0010] Weights for adjusting the position of the center of gravity of the head can be arranged on the toe side and the heel side of the sole. The weight for adjusting the position of the center of gravity may be additionally or separately provided at an intermediate portion between the toe and the heel on the sole. In this case, it is preferable to use a material having a higher specific gravity than the material constituting the head, particularly the material constituting the sole.
【００１１】またヘッドの形状に関し、フェース〜バッ
ク間幅がソール〜トップ部間高さより大であることが好
ましい。Regarding the shape of the head, the width between the face and the back is preferably larger than the height between the sole and the top.
【００１２】以下図面に基づき説明する。図１は本発明
における１実施例を示すロフト角１７°を有するクラブ
ヘッドの幅方向断面図、図２及び図３はそれぞれロフト
角１９°及び２１°を有するクラブヘッドの幅方向断面
図である。そして図４は図２に示すヘッドの長さ方向断
面図である。A description will be given below with reference to the drawings. FIG. 1 is a cross-sectional view of a club head having a loft angle of 17 ° showing one embodiment of the present invention, and FIGS. 2 and 3 are cross-sectional views of a club head having loft angles of 19 ° and 21 °, respectively. . FIG. 4 is a longitudinal sectional view of the head shown in FIG.
【００１３】本発明は、シャフト（図示せず）の先端部
にヘッド2備え、ヘッド2のフェース面4 のロフト角αが
１５〜３０°の範囲内で異なる複数の番手によって構成
されたゴルフクラブ11、12、13…のセットにおいて、上
記ヘッド2は少なくともその主要部分5が比較的比重の小
さい金属によって形成されると共に、ヘッドの重心Oを
フェース面4に対し垂直に下ろしたフェース面位置（重
心投影点）Pの高さhが、上記クラブの番手間を通じほぼ
一定でることを特徴とする。ロフト角αは、ヘッド2を
水平な面Hにセットした状態でフェース面4が水平面Hに
直交する線vに対しなす角度である。The present invention relates to a golf club having a head 2 provided at a tip end of a shaft (not shown), and a plurality of golf clubs having different face numbers 4 within a range of 15 to 30 degrees of a face surface 4 of the head 2. In the set of 1 1 , 1 2 , 1 3, ..., The head 2 has at least a main portion 5 formed of a metal having a relatively small specific gravity, and a center of gravity O of the head lowered perpendicular to the face surface 4. The height h of the surface position (center of gravity projection point) P is substantially constant throughout the count of the club. The loft angle α is an angle formed by the face surface 4 with respect to a line v orthogonal to the horizontal plane H when the head 2 is set on the horizontal plane H.
【００１４】図１に示すロフト角α1が１７°の３番ウ
ッドクラブの例では、重心投影点の高さh1は２２．８m
m、同様に図２に示すロフト角α2が１９°の４番ウッド
クラブの例では、重心投影点の高さh2は２２．２mm、そ
して図３に示すロフト角α3が２1°の５番ウッドクラブ
の例では、重心投影点の高さh3は２２．０mm と、ロフ
ト角αが17〜21°において重心投影点の高さh は実質上
一定の値である。このように本発明においては、ロフト
角αが１５〜３０°を通じ重心投影点P の高さh がほぼ
一定である。重心投影点Pの高さhにつき、より具体的に
は、２０〜２３mm の範囲が好ましく、上限下限間の差
が３mm 以内であれば許容できる。In the example of the No. 3 wood club in which the loft angle α 1 is 17 ° shown in FIG. 1, the height h 1 of the center of gravity projection point is 22.8 m.
m, similarly, in the example of the No. 4 wood club in which the loft angle α 2 is 19 °, the height h 2 of the center of gravity projection point is 22.2 mm, and the loft angle α 3 shown in FIG. 3 is 21 °. in the example of 5-wood club, a height h 3 of the center of gravity projection point height h of the center of gravity projection point at 22.0mm and a loft angle α is 17 to 21 ° is substantially constant value. As described above, in the present invention, the height h of the center-of-gravity projection point P is substantially constant when the loft angle α is 15 to 30 °. More specifically, the height h of the center-of-gravity projection point P is preferably in the range of 20 to 23 mm, and a difference between the upper limit and the lower limit of 3 mm is acceptable.
【００１５】ソール6 の肉厚はクラブの番手が大きくな
るに従って厚く形成することができる。またソール6
を、ヘッドを構成する他の部分、即ちフェース3 を含む
主要部分5 よりも比重の大きい材料によって形成するこ
とが好ましい。主要部分5 にチタン（比重…以下同じ…
４．５）またはその合金、アルミ（２．7）またはその
合金等、５以下の比重を有する金属材料を用いる場合、
ソール6 にはステンレス（７．８）、銅（８．９）また
はその合金、鉄（７．６）、亜鉛（７．１）ニッケル
（８．９）等の金属が好適である。しかしこの実施例に
おいては、主要部分5 ソール6 を通じ全体をチタンで形
成した。但し、ソールの肉厚について３番ウッドのソー
ル61を1.8mm 、４番ウッドのソール62を2.3mm そして５
番ウッドのソール63を3.3mm と順次厚みを厚く形成し
た。The thickness of the sole 6 can be increased as the club count increases. Also Sole 6
Is preferably formed of a material having a higher specific gravity than the other parts constituting the head, that is, the main part 5 including the face 3. The main part 5 is made of titanium (specific gravity… the same applies hereafter)
When using a metal material having a specific gravity of 5 or less such as 4.5) or an alloy thereof, aluminum (2.7) or an alloy thereof,
The sole 6 is preferably made of a metal such as stainless steel (7.8), copper (8.9) or an alloy thereof, iron (7.6), zinc (7.1) and nickel (8.9). However, in this embodiment, the whole was made of titanium through the main part 5 and the sole 6. However, regarding the thickness of the sole, the sole of the third wood 6 1 is 1.8 mm, the sole of the fourth wood 6 2 is 2.3 mm and 5
The turn wood sole 6 3 formed thick sequentially thickness as 3.3 mm.
【００１６】クラブの番手に応じて、このようにソール
6 の厚みに変化をもたせることは、重心投影点P の高さ
h の調節に効果的である。しかしより直接的な方法とし
て、ヘッド2を構成する材料よりも比重の大きい金属、
例えばタングステン（比重１９）またはその合金のよう
な高比重の錘9 をソール部分に固着し高さhを調節する
ことができる。錘9 の配置位置は、図４に示すように、
トウ7 寄り部分及びヒール8 寄り部分に一対配置するこ
とができる。これに加え、またはこれとは無関係に錘9
をヘッドの長さn 方向中央部に配置することができる。According to the number of the club, the sole
The change in the thickness of 6 is the height of the centroid projection point P.
It is effective for adjusting h. However, as a more direct method, a metal having a higher specific gravity than the material forming the head 2,
For example, a weight 9 having a high specific gravity, such as tungsten (specific gravity 19) or an alloy thereof, is fixed to the sole portion to adjust the height h. The arrangement position of the weight 9 is as shown in FIG.
A pair can be arranged at the toe 7 leaning portion and the heel 8 leaning portion. In addition to or independently of this, weight 9
Can be arranged at the center of the head in the direction of the length n.
【００１７】ソール6 部分への錘9 の配置は、図４に示
すように、錘の両側からホルダー12を用いてソール6 の
上面に固定することができる。錘9 の固定はその他、ト
ウ7 部分及びヒール8 部分への配置例として図４に示す
ように、ソール6 を錘9 の厚み相当分上方に変形させて
窪みを設け、その窪み内に錘9 をはめ込み固定すること
ができる。図中符号13 は、錘の脱落を防止するための
かしめ部である。As shown in FIG. 4, the weight 9 can be fixed to the sole 6 on the upper surface of the sole 6 by using holders 12 from both sides of the weight. As another example of fixing the weight 9, as shown in FIG. 4, as an example of arrangement on the toe 7 and the heel 8, the sole 6 is deformed upward by an amount corresponding to the thickness of the weight 9, and a depression is provided. Can be fitted and fixed. Reference numeral 13 in the drawing is a caulking portion for preventing the weight from falling off.
【００１８】ヘッドのフェース3〜バック10間の幅wは、
ソール6〜トップ部11間高さjより大であることが重心投
影点の高さ調節の面から有利である。ヘッド幅w／ヘッ
ド高さjは1.5〜3.0が好ましい。The width w between the face 3 and the back 10 of the head is
It is advantageous from the viewpoint of adjusting the height of the projection point of the center of gravity that the height is larger than the height j between the sole 6 and the top portion 11. The head width w / the head height j is preferably 1.5 to 3.0.
【００１９】[0019]
【発明の効果】本発明は、少なくとも主要部分が比較的
比重の小さい金属によって形成されたヘッドを有し、そ
のフェース面のロフト角が１５〜３０°の範囲内で異な
る複数の番手により構成されたゴルフクラブであって、
ヘッドの重心をフェース面に対し垂直に下ろしたフェー
ス面位置の高さが、クラブの番手間を通じ、ほぼ一定に
設定されているため、プレイ時においてボールに対し普
通にヒットしさえすれば、ロフト角に応じた飛距離を得
ることができ、その上フェアウエイ上においてボールを
有利にとらえやすく、打ち損じを極力低減することがで
きるのである。According to the present invention, there is provided a head having at least a main part formed of a metal having a relatively small specific gravity, and having a plurality of counts having different loft angles of the face surface within a range of 15 to 30 °. Golf club
Since the height of the face surface position where the center of gravity of the head is lowered perpendicular to the face surface is set almost constant throughout the club count, if you hit the ball normally during play, the loft A flight distance according to the angle can be obtained, and the ball can be more advantageously captured on the fairway, and the hitting damage can be reduced as much as possible.
【図１】本発明における１実施例を示すロフト角１７°
を有するクラブヘッドの幅方向断面図である。FIG. 1 shows a loft angle of 17 ° showing one embodiment of the present invention.
FIG. 3 is a cross-sectional view in the width direction of a club head having the following.
【図２】同じくロフト角が１９°を有するクラブヘッド
の幅方向断面図である。FIG. 2 is a cross-sectional view in the width direction of a club head having a loft angle of 19 °.
【図３】同じくロフト角が２1°を有するクラブヘッド
の幅方向断面図である。FIG. 3 is a cross-sectional view in the width direction of a club head having a loft angle of 21 °.
【図４】FIG. 4
1 ゴルフクラブ 2 ヘッド 4 フェース面 6 ソール部 α ロフト角 O ヘッドの重心 H フェース面に対する重心投影点の高さ 1 Golf club 2 Head 4 Face surface 6 Sole part α Loft angle O Center of gravity of head H Height of projected point of center of gravity to face surface
Claims (8)
ッドのフェース面のロフト角が１５〜３０°の範囲内で
異なる複数の番手により構成されたゴルフクラブセット
において、上記ヘッドは少なくともその主要部分が比較
的比重の小さい金属よって形成されると共に、ヘッドの
重心を上記フェース面に対し垂直に下ろしたフェース面
位置のソールよりの高さが、上記クラブの番手間を通じ
ほぼ一定であることを特徴とするゴルフクラブセット。1. A golf club set comprising a plurality of counts having a head at a tip end of a shaft and having a face surface of the head having a loft angle within a range of 15 to 30 °. The portion is formed of a metal having a relatively small specific gravity, and the height of the center of gravity of the head from the sole at the face surface position where the center of gravity is lowered perpendicular to the face surface is substantially constant throughout the count of the club. Characteristic golf club set.
３mmの範囲内にあることを特徴とする請求項１記載のゴ
ルフクラブセット。2. The height of the face of the center of gravity is 20 to 2
2. The golf club set according to claim 1, wherein the distance is within a range of 3 mm.
に従って厚く形成したことを特徴とする請求項１乃至２
記載のゴルフクラブセット。3. The sole according to claim 1, wherein the thickness of the sole is increased as the club number increases.
The described golf club set.
よりも比重の大きい材料によって形成したことを特徴と
する請求項１乃至３記載のゴルフクラブセット。4. The golf club set according to claim 1, wherein the sole is made of a material having a higher specific gravity than other parts constituting the head.
の重心位置調整用錘を具備することを特徴とする請求項
１乃至４記載のゴルフクラブセット。5. The golf club set according to claim 1, further comprising weights for adjusting the position of the center of gravity of the head on the toe side and the heel side of the sole.
の重心位置調整用錘を具備することを特徴とする請求項
１乃至５記載のゴルフクラブセット。6. The golf club set according to claim 1, further comprising a weight for adjusting the center of gravity of the head at an intermediate portion between the toe and the heel on the sole.
い材料よりなることを特徴とする請求項５乃至６記載の
ゴルフクラブセット。7. The golf club set according to claim 5, wherein said weight is made of a material having a higher specific gravity than a material constituting the head.
トップ部間高さより大であることを特徴とする請求項１
記載のゴルフクラブセット8. A head having a width between a face and a back having a sole.
2. The structure according to claim 1, wherein the height is larger than the height between the top portions.
The described golf club set
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28429099A JP3762587B2 (en) | 1999-10-05 | 1999-10-05 | Golf club set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28429099A JP3762587B2 (en) | 1999-10-05 | 1999-10-05 | Golf club set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001104520A true JP2001104520A (en) | 2001-04-17 |
| JP3762587B2 JP3762587B2 (en) | 2006-04-05 |
Family
ID=17676624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28429099A Expired - Fee Related JP3762587B2 (en) | 1999-10-05 | 1999-10-05 | Golf club set |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3762587B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7273423B2 (en) | 2003-12-05 | 2007-09-25 | Bridgestone Sport Corporation | Golf club head |
| US20100304883A1 (en) * | 2009-05-29 | 2010-12-02 | Gilbert Peter J | Wedge type golf club head |
| JP2011206243A (en) * | 2010-03-30 | 2011-10-20 | Globeride Inc | Golf club |
| US9211450B2 (en) | 2009-05-29 | 2015-12-15 | Acushnet Company | Wedge type golf club head |
| USD762792S1 (en) | 2015-02-12 | 2016-08-02 | Acushnet Company | Wedge golf club head |
| USD773574S1 (en) | 2015-02-12 | 2016-12-06 | Acushnet Company | Wedge golf club set |
| US9713751B2 (en) | 2009-05-29 | 2017-07-25 | Acushnet Company | Wedge type golf club head |
| USD829837S1 (en) | 2017-03-01 | 2018-10-02 | Acushnet Company | Wedge golf club |
| KR20220111646A (en) * | 2021-02-02 | 2022-08-09 | 야마하 가부시키가이샤 | Golf club head |
-
1999
- 1999-10-05 JP JP28429099A patent/JP3762587B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7273423B2 (en) | 2003-12-05 | 2007-09-25 | Bridgestone Sport Corporation | Golf club head |
| US7806781B2 (en) | 2003-12-05 | 2010-10-05 | Bridgestone Sports Co., Ltd. | Golf club head |
| US9713751B2 (en) | 2009-05-29 | 2017-07-25 | Acushnet Company | Wedge type golf club head |
| US8187120B2 (en) * | 2009-05-29 | 2012-05-29 | Acushnet Company | Wedge type golf club head |
| US8568249B2 (en) | 2009-05-29 | 2013-10-29 | Acushnet Company | Wedge type golf club head |
| US9211450B2 (en) | 2009-05-29 | 2015-12-15 | Acushnet Company | Wedge type golf club head |
| US20100304883A1 (en) * | 2009-05-29 | 2010-12-02 | Gilbert Peter J | Wedge type golf club head |
| US9821202B2 (en) | 2009-05-29 | 2017-11-21 | Acushnet Company | Wedge type golf club head |
| JP2011206243A (en) * | 2010-03-30 | 2011-10-20 | Globeride Inc | Golf club |
| USD762792S1 (en) | 2015-02-12 | 2016-08-02 | Acushnet Company | Wedge golf club head |
| USD773574S1 (en) | 2015-02-12 | 2016-12-06 | Acushnet Company | Wedge golf club set |
| USD829837S1 (en) | 2017-03-01 | 2018-10-02 | Acushnet Company | Wedge golf club |
| KR20220111646A (en) * | 2021-02-02 | 2022-08-09 | 야마하 가부시키가이샤 | Golf club head |
| KR102615881B1 (en) | 2021-02-02 | 2023-12-20 | 야마하 가부시키가이샤 | Golf club head |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3762587B2 (en) | 2006-04-05 |
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