JPH03114477A - Head of wood golf club - Google Patents
Head of wood golf clubInfo
- Publication number
- JPH03114477A JPH03114477A JP1252223A JP25222389A JPH03114477A JP H03114477 A JPH03114477 A JP H03114477A JP 1252223 A JP1252223 A JP 1252223A JP 25222389 A JP25222389 A JP 25222389A JP H03114477 A JPH03114477 A JP H03114477A
- Authority
- JP
- Japan
- Prior art keywords
- club head
- top edge
- head
- club
- wood golf
- 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.)
- Pending
Links
- 239000002023 wood Substances 0.000 title claims abstract description 17
- 238000004299 exfoliation Methods 0.000 abstract 2
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0466—Heads wood-type
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0437—Heads with special crown configurations
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0441—Heads with visual indicators for aligning the golf club
-
- 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
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
- A63B2225/01—Special aerodynamic features, e.g. airfoil shapes, wings or air passages
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ウッドゴルフクラブヘッドに係わり、更に
詳しくはウッドゴルフクラブのスウィング時に、ヘッド
上面に生ずる層気流の剥離を起こし難くし、かつ空気に
よる抗力を減少させたウッドゴルフクラブヘッドの改良
に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wood golf club head, and more specifically, to prevent separation of laminar airflow that occurs on the upper surface of the head when swinging a wood golf club. This invention relates to an improvement of a wood golf club head that reduces the drag caused by.
一般に、ウッドゴルフクラブは、打球時のスウィングに
よりクラブヘッドに空気抵抗を受け、これが打球でのヘ
ッドスピードの減少やシャフトの変則的振動の原因とな
り、結果として打球の飛距離の低下や、方向性に悪影響
を及ぼしている。In general, wood golf clubs experience air resistance on the club head due to the swing when hitting the ball, which causes a decrease in head speed when hitting the ball and irregular vibrations of the shaft, resulting in a reduction in the flight distance of the ball and a loss of direction. is having a negative impact on
この傾向は、特にウッドクラブに強く、昨今の飛距離ア
ップを目的としてのクラブシャフトの長尺化に伴うヘッ
ドのラージ化により、無視出来ないものとなって来てい
る。This trend is particularly strong in wood clubs, and can no longer be ignored as club shafts have become longer and heads have become larger in recent years with the aim of increasing flight distance.
ところで、従来のウッドゴルフクラブ１としては、例え
ば第９図及び第１０図に示すものであって、クラブヘッ
ド２の上面２ａは、円弧状に形成され、フェース面３側
からの気流Ｑは、第１２図に示すようにフェース面３に
当たった後、クラブヘッド２の上面２ａと略水平に形成
されたソール部４側に分離して回り込むようになる。Incidentally, a conventional wood golf club 1 is shown in FIGS. 9 and 10, for example, in which the upper surface 2a of the club head 2 is formed in an arc shape, and the airflow Q from the face surface 3 side is As shown in FIG. 12, after hitting the face surface 3, it separates and wraps around toward the sole portion 4, which is formed approximately horizontally with the upper surface 2a of the club head 2.
上記のクラブヘッド１に対する空気抵抗は、クラブをス
ウィングする時、クラブヘッド２の周辺に生ずる気流Ｑ
によるものである。The above air resistance against the club head 1 is caused by the airflow Q generated around the club head 2 when swinging the club.
This is due to
詳述すれば、クラブヘッド１のフェイス面３に於ける気
流Ｑの空気抵抗と、クラブヘッド１の周辺に生ずる気流
Ｑａの乱れから来る抵抗に分けられる。この両気流Ｑ、
Ｑａのうち、前者の空気抵抗は大きく、打球面（フェイ
ス面３）のラージ化傾向からも避は難いものである。To be more specific, the resistance can be divided into the air resistance of the airflow Q on the face surface 3 of the club head 1 and the resistance resulting from the turbulence of the airflow Qa generated around the club head 1. This air flow Q,
Among Qa, the former has a large air resistance, and it is difficult to avoid it because the ball hitting surface (face surface 3) tends to become larger.
また、後者は大きさとしては小さいが、クラブシャフト
の変則的振動に与える影響は太き（、クラブヘッド１の
形状の改良により減少させる可能性を有している。Although the latter is small in size, it has a large effect on irregular vibrations of the club shaft (and has the potential to be reduced by improving the shape of the club head 1).
第１１図は、クラブヘッド２の中央断面（第９図のＸ−
Ｘ矢視断面図）であり、スウィング中の理想的気流を示
したものである。即ち、クラブヘッド２のヘッド上面２
ａでの気流Ｑａは層流となっており、気流の乱れはない
が、現実には第１２図に示すように、クラブヘッド２の
上面２ａのＸ部位で気流Ｑａに層剥離が生し、気流Ｑａ
の乱れが起きる。これが、スウィング中のヘッドスピー
ドの低下と、シャフトのｉ則的振動の原因となる。FIG. 11 shows a central cross section of the club head 2 (X--X in FIG. 9).
This is a sectional view taken along the X arrow, and shows the ideal airflow during a swing. That is, the head upper surface 2 of the club head 2
The airflow Qa at point a is a laminar flow and there is no turbulence in the airflow, but in reality, as shown in FIG. Airflow Qa
A disturbance occurs. This causes a decrease in head speed during swing and i-law vibration of the shaft.
上記の気流Ｑａの乱れの傾向は、ヘッドスピードが高く
なる程強くなり、またクラブヘッド２の形状としては、
上面の曲率が大きい程強くなる。この曲率は、ヘッド後
部２ｂでの乱気流を減する意味から小さくすることは困
難である。The tendency of the above-mentioned airflow Qa to be turbulent becomes stronger as the head speed increases, and the shape of the club head 2
The larger the curvature of the upper surface, the stronger it becomes. It is difficult to reduce this curvature in order to reduce turbulence at the head rear portion 2b.
即ち、クラブヘッド２の形状としては、所定以上の大き
さにするには限界があることから、上面の曲率も小さく
することは限界がある。That is, since there is a limit to making the shape of the club head 2 larger than a predetermined size, there is also a limit to reducing the curvature of the upper surface.
この発明は、かかる従来の課題に着目して案出されたも
ので、クラブヘッド上面に生ずる気流の乱れ、換言すれ
ばクラブヘット上面の気流の層剥離現象を低減させ、空
気による抗力を減少させたウッドゴルフクラブヘッドを
提供することを目的とするものである。This invention was devised in view of the above-mentioned conventional problems, and reduces the turbulence of airflow occurring on the upper surface of the club head, in other words, the layer separation phenomenon of the airflow on the upper surface of the club head, and reduces the drag force caused by the air. The object of the present invention is to provide a wood golf club head with a high quality wood golf club head.
〔課題を解決するための手段］
この発明は上記目的を達成するため、クラブヘッドの円
弧状に形成された上面に、クラブフェイスのトップエッ
ヂからハック側に向かって２Ｏａｎ以内に、前記トップ
エッヂと略平行で、かつ上面全長にわたって所定の高さ
の凸部または所定の深さの凹部を形成したことを要旨と
するものである。[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention has a groove formed on the arcuate upper surface of the club head within 2 Oan from the top edge of the club face toward the hack side. The gist is that a convex portion of a predetermined height or a concave portion of a predetermined depth is formed substantially parallel and over the entire length of the upper surface.
この発明は、上記のように構成され、クラブヘッド上面
のフェイス寄りに、クラブフェイスのトップエッヂに沿
って、トップエッヂと略平行で、かつ上面略全長にわた
って凸部または凹部を形成することにより、クラブヘッ
ドの上面に微小の渦状の乱流を誘起させて境界制御を行
い、空気抵抗を減少させて層剥離を緩和させ、スウィン
グ中のヘッドスピードの低下を減少させ、打球の飛距離
を延ばし、更にクラブヘッドの変速的振動を押さえて打
球の方向性を良好にさせている。The present invention is configured as described above, and by forming a convex portion or a concave portion on the upper surface of the club head near the face, along the top edge of the club face, approximately parallel to the top edge, and over approximately the entire length of the upper surface, Boundary control is performed by inducing minute vortex-like turbulence on the top surface of the club head, reducing air resistance and mitigating delamination, reducing the drop in head speed during swing, and extending the flight distance of the ball. Furthermore, it suppresses the vibration of the club head due to speed change and improves the directionality of the ball.
以下、添付図面に基づき、この発明の詳細な説明する。 Hereinafter, the present invention will be described in detail based on the accompanying drawings.
なお、従来例と同一構成要素は、同一符号を付して説明
は省略する。Note that the same components as those in the conventional example are given the same reference numerals, and the description thereof will be omitted.
第１図は、この発明を実施したウッドゴルフクラブヘッ
ド１の平面図、第２図及び第３図は第１図のＡ−Ａ線に
沿う断面図を示し、クラブヘッド２の上面２ａは円弧状
に形成され、３はフェース面、４はソール部を示してい
る。FIG. 1 is a plan view of a wood golf club head 1 according to the present invention, and FIGS. 2 and 3 are cross-sectional views taken along line A-A in FIG. It is formed in an arc shape, and 3 indicates the face surface and 4 indicates the sole portion.
この発明にかかるウッドゴルフクラブヘッド１は、第１
図〜第３図に示すように、クラブヘッド２の円弧状に形
成された上面２ａに、クラブフェイス３のトップエッヂ
３ａからバンク側２ｂに向かって所定距離！、即ち２０
ｍｍ以内に、前記トップエッヂ３ａと略平行で、かつ路
上間全長にわたって所定の高さの凸部５または第４図に
示すように所定の深さの凹部６を形成しである。The wood golf club head 1 according to the present invention has a first
As shown in FIGS. 3 to 3, a predetermined distance from the top edge 3a of the club face 3 toward the bank side 2b is applied to the arcuate upper surface 2a of the club head 2. , i.e. 20
A convex portion 5 of a predetermined height or a recess portion 6 of a predetermined depth as shown in FIG. 4 is formed approximately parallel to the top edge 3a and over the entire length of the track within mm.
なお、上記凸部５及び凹部６は、上記の実施例のように
トップエッヂ３ａと略平行に路上間全長にわたって設け
る他、断続的に設けても同様な効果を得ることが出来る
ものである。The convex portion 5 and the concave portion 6 may be provided substantially parallel to the top edge 3a over the entire length of the road as in the above embodiment, or may be provided intermittently to obtain the same effect.
また、凸部５または凹部６の段差、即ち凸部５の高さま
たは凹部６の深さは、０．５ｍｍ〜２．０ｍｍの範囲が
好ましい。Moreover, the step difference between the convex portions 5 or the concave portions 6, that is, the height of the convex portions 5 or the depth of the concave portions 6, is preferably in the range of 0.5 mm to 2.0 mm.
なお、凸部５の形状としては、第５図（ａ）〜第５図（
ｅ）に示すように、断面四角状５ａ、１ｔＩｒ面楔状５
ｂ、断面半円弧状５ｃ、断面三角状５ｄ断面球状５ｅ等
、各種の形状が考えられ、また凹部６の形状としては、
第５図（ｆ）〜第５図（ｉ）に示すように、トップエッ
ヂ３ａから連続する上面２ａに垂直な段部６ａを形成し
た物、トップエッヂ３ａから連続する上面２ａから垂直
に立上げた段部６ｂを形成した物、上面２ａに底面が円
弧状に形成した四角状の溝６ｃを形成した物、更に上面
２ａに浅溝６ｄを形成した物等が考えられ、これらの形
成位置及び高さ、深さについては、上述した範囲の寸法
で形成されるものである。Note that the shape of the convex portion 5 is as shown in FIGS. 5(a) to 5(a).
As shown in e), the cross section is square 5a, the 1tIr surface wedge shape 5
b, various shapes such as a semi-circular cross-section 5c, a triangular cross-section 5d and a spherical cross-section 5e are possible, and the shape of the recess 6 is as follows.
As shown in FIG. 5(f) to FIG. 5(i), a vertical step 6a is formed on the upper surface 2a continuous from the top edge 3a, and a vertical step 6a is formed on the upper surface 2a continuous from the top edge 3a. There may be a structure in which a stepped portion 6b is formed, a structure in which a rectangular groove 6c with an arcuate bottom surface is formed on the top surface 2a, and a structure in which a shallow groove 6d is formed in the top surface 2a. The height and depth are formed within the above-mentioned range.
この発明では、上記のようにクラブフェイス３のトップ
エッヂ３ａからパック側２ｂに向かって所定の位置に、
所定の形状で凸部５または凹部６を形成することで、ク
ラブへソド２の上面２ａにおいて、小さな乱流を生じさ
せ、これがクラブヘッド２の上面２ａの層気流の剥離を
遅らせ、クラブのスウィング中の空気による抗力を減少
させることが出来るのである。In this invention, as described above, at a predetermined position from the top edge 3a of the club face 3 toward the pack side 2b,
By forming the convex portion 5 or the concave portion 6 in a predetermined shape, a small turbulent flow is generated on the upper surface 2a of the club head 2, which delays the separation of the laminar airflow on the upper surface 2a of the club head 2, and improves the swing of the club. This can reduce the drag caused by the air inside.
次に、この発明にかかるウッドゴルフクラブヘッド１を
使用して、気流Ｑ、Ｑａの流れの可視化の実験方法を説
明する。Next, an experimental method for visualizing the airflows Q and Qa using the wood golf club head 1 according to the present invention will be described.
まず、実験の条件として、クラブヘット′は、市販のド
ライバーをシリコンで型取りし、ウレタンの注型により
作製した模型を使用した。First, as a condition for the experiment, a club head' was made by molding a commercially available driver with silicone and casting it with urethane.
そして、火花追跡法で可視化出来るように、第６図に示
すようにタングステンワイヤ等の線状電極７ａ、７ｂを
、気流Ｑの流れ方向の上流側を狭く、下流側を広くした
。Then, as shown in FIG. 6, the linear electrodes 7a and 7b, such as tungsten wires, were made narrow on the upstream side and wide on the downstream side in the flow direction of the airflow Q so that they could be visualized by the spark tracing method.
そして、高電圧・高周波パルス発生装置を使用して２５
０ＫＶの電圧で火花列をクラブヘッド１の表面にはわせ
て可視化を行った。Then, using a high voltage/high frequency pulse generator, 25
Visualization was performed by applying a spark array to the surface of the club head 1 at a voltage of 0 KV.
この結果、第７図に示すようにクラブヘッド２の上面２
ａに凸部５を形成した場合、及び第８図に示すように凹
部６を形成した場合には、クラブヘッド２の上面２ａに
微小の乱気流、換言すると渦状の乱流を生じさせ、これ
が全体気流の層剥離の発生を大幅にヘッド後方に後退さ
せるものである。As a result, as shown in FIG.
When the convex portion 5 is formed in the upper surface 2a of the club head 2, and when the concave portion 6 is formed as shown in FIG. This greatly reduces the occurrence of layer separation in the airflow to the rear of the head.
これにより、クラブヘッド２の上面２ａの気流Ｑａの層
剥離を緩和させて、ヘッドスピードの減少やシャフトの
変速的振動を防止させることが出来るのである。Thereby, layer separation of the airflow Qa on the upper surface 2a of the club head 2 can be alleviated, thereby making it possible to prevent a decrease in head speed and shift-related vibration of the shaft.
（発明の効果）
この発明は、上記のようにクラブヘッドの円弧状に形成
された上面に、クラブフェイスのトップエッヂからパッ
ク側に向かって２０ｍｍ以内に、前記トップエッヂと略
平行で、かつ略上面全長にわたって所定の高さの凸部ま
たは所定の深さの凹部を形成したので、クラブヘッド上
面に生ずる気流の乱れ、換言すればクラブヘッド上面の
気流の層剥離現象を低減させ、空気による抗力を減少さ
せて、スウィング中のヘントスピードの低下を小さくさ
せ、打球の飛距離を延ばすことが出来ると共に、シャフ
トの変速的振動を押さえてポールの方向性を良好にする
ことが出来る効果がある。(Effects of the Invention) The present invention provides the above-described arcuate top surface of the club head with a groove that is approximately parallel to the top edge and within 20 mm from the top edge of the club face toward the pack side. Since a convex portion of a predetermined height or a concave portion of a predetermined depth is formed over the entire length of the upper surface, the turbulence of the airflow that occurs on the upper surface of the club head, in other words, the layer separation phenomenon of the air flow on the upper surface of the club head is reduced, and the drag caused by the air is reduced. This has the effect of reducing the drop in head speed during swing, extending the flight distance of the ball, and suppressing the vibrations caused by shifting of the shaft to improve the directionality of the pole.
第１図はこの発明を実施したウッドゴルフクラブヘッド
の平面図、第２図及び第３図は第１図のＡ−Ａ矢視断面
図、第４図はこの発明の例の実施例を示す第３図と同様
な図、第５図（ａ）〜第５図（ｉ）は、クラブヘッドの
上面に形成する凸部または凹部の変形例を示す断面図、
第６図はこの発明にかかるクラブヘッドを可視化する方
法を示す説明図、第７図及び第８図は、この発明のクラ
ブヘッドを可視化した時の気流の状態を示す説明図、第
９図は従来のウッドゴルフクラブの正面図、第１０図は
第９図のＸ−Ｘ矢視断面図、第１１図は打球時のヘッド
周辺の理想的空気の流れを示す断面図、第１２図は第１
０図のＸ−Ｘ矢視断面での打球時のヘッド周辺の実際の
空気の流れを示す説明図である。
ｌ・・・ウッドゴルフクラブヘッド、２・・・クラブヘ
ッド、２ａ・・・クラブヘッドの上面、３・・・フェー
ス面、４・・・ソール部、５・・・凸部、６・・・凹部
、！・・・距離。Fig. 1 is a plan view of a wood golf club head embodying the present invention, Figs. 2 and 3 are sectional views taken along the line A-A in Fig. 1, and Fig. 4 shows an embodiment of the present invention. Figures similar to Figure 3 and Figures 5(a) to 5(i) are cross-sectional views showing modified examples of convex portions or concave portions formed on the upper surface of the club head;
FIG. 6 is an explanatory diagram showing a method of visualizing the club head according to the present invention, FIGS. 7 and 8 are explanatory diagrams showing the state of airflow when the club head of the present invention is visualized, and FIG. A front view of a conventional wood golf club, FIG. 10 is a sectional view taken along the line X-X in FIG. 9, FIG. 11 is a sectional view showing the ideal air flow around the head when hitting a ball, and FIG. 1
FIG. 2 is an explanatory diagram showing the actual flow of air around the head when hitting a ball in a cross section taken along the line X-X in FIG. l... Wood golf club head, 2... Club head, 2a... Upper surface of club head, 3... Face surface, 4... Sole portion, 5... Convex portion, 6... Recess,! ···distance.
Claims (1)
イスのトップエッヂからバック側に向かって２０ｍｍ以
内に、前記トップエッヂと略平行で、かつ略上面全長に
わたって所定の高さの凸部または所定の深さの凹部を形
成したことを特徴とするウッドゴルフクラブヘッド。On the arcuate upper surface of the club head, within 20 mm from the top edge of the club face toward the back side, there is a convex portion or a predetermined protrusion approximately parallel to the top edge and having a predetermined height over approximately the entire length of the upper surface. A wood golf club head characterized by forming a deep recess.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1252223A JPH03114477A (en) | 1989-09-29 | 1989-09-29 | Head of wood golf club |
| US07/510,242 US5092599A (en) | 1989-04-20 | 1990-04-17 | Wood golf club head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1252223A JPH03114477A (en) | 1989-09-29 | 1989-09-29 | Head of wood golf club |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03114477A true JPH03114477A (en) | 1991-05-15 |
Family
ID=17234228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1252223A Pending JPH03114477A (en) | 1989-04-20 | 1989-09-29 | Head of wood golf club |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03114477A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04180778A (en) * | 1990-11-15 | 1992-06-26 | Osawa Shokai:Kk | Golf club head |
| WO2013066429A1 (en) * | 2011-10-31 | 2013-05-10 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US9168432B2 (en) | 2011-10-31 | 2015-10-27 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US10188914B2 (en) | 2015-11-06 | 2019-01-29 | Bridgestone Sports Co., Ltd. | Golf club head |
| US10232232B2 (en) | 2011-10-31 | 2019-03-19 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US10413788B2 (en) | 2011-10-31 | 2019-09-17 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US10695625B2 (en) | 2011-10-31 | 2020-06-30 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US11213725B2 (en) | 2011-10-31 | 2022-01-04 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
-
1989
- 1989-09-29 JP JP1252223A patent/JPH03114477A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04180778A (en) * | 1990-11-15 | 1992-06-26 | Osawa Shokai:Kk | Golf club head |
| GB2511224B (en) * | 2011-10-31 | 2019-06-12 | Karsten Mfg Corp | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US11141631B2 (en) | 2011-10-31 | 2021-10-12 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US10413788B2 (en) | 2011-10-31 | 2019-09-17 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US10543408B2 (en) | 2011-10-31 | 2020-01-28 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US9168432B2 (en) | 2011-10-31 | 2015-10-27 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| JP2019111369A (en) * | 2011-10-31 | 2019-07-11 | カーステン マニュファクチュアリング コーポレーション | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US10232232B2 (en) | 2011-10-31 | 2019-03-19 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| WO2013066429A1 (en) * | 2011-10-31 | 2013-05-10 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US11904217B2 (en) | 2011-10-31 | 2024-02-20 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| GB2511224A (en) * | 2011-10-31 | 2014-08-27 | Karsten Mfg Corp | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| JP2014532469A (en) * | 2011-10-31 | 2014-12-08 | カーステン マニュファクチュアリング コーポレーション | Club head golf club head with turbulent flow and method for manufacturing club head golf club head with turbulent flow |
| US10695625B2 (en) | 2011-10-31 | 2020-06-30 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US11058930B2 (en) | 2011-10-31 | 2021-07-13 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US8608587B2 (en) | 2011-10-31 | 2013-12-17 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US11213725B2 (en) | 2011-10-31 | 2022-01-04 | Karsten Manufacturing Corporation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US11491375B2 (en) | 2011-10-31 | 2022-11-08 | Karsten Manufacturing Coperation | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US11779818B2 (en) | 2011-10-31 | 2023-10-10 | Karsten Manufacturing Corporation. | Golf club heads with turbulators and methods to manufacture golf club heads with turbulators |
| US10188914B2 (en) | 2015-11-06 | 2019-01-29 | Bridgestone Sports Co., Ltd. | Golf club head |
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