JP2004174100A - Golf club head - Google Patents

Golf club head Download PDF

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Publication number
JP2004174100A
JP2004174100A JP2002346167A JP2002346167A JP2004174100A JP 2004174100 A JP2004174100 A JP 2004174100A JP 2002346167 A JP2002346167 A JP 2002346167A JP 2002346167 A JP2002346167 A JP 2002346167A JP 2004174100 A JP2004174100 A JP 2004174100A
Authority
JP
Japan
Prior art keywords
face
portion
golf club
club head
thickness
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
Application number
JP2002346167A
Other languages
Japanese (ja)
Inventor
Yoshinori Sano
喜則 佐野
Original Assignee
Sumitomo Rubber Ind Ltd
住友ゴム工業株式会社
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 Sumitomo Rubber Ind Ltd, 住友ゴム工業株式会社 filed Critical Sumitomo Rubber Ind Ltd
Priority to JP2002346167A priority Critical patent/JP2004174100A/en
Publication of JP2004174100A publication Critical patent/JP2004174100A/en
Application status is Pending legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/0466Heads wood-type
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0416Heads with an impact surface provided by a face insert
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/045Strengthening ribs

Abstract

<P>PROBLEM TO BE SOLVED: To improve reaction performance. <P>SOLUTION: A golf club head includes a face board shape part 3 having a face surface 2 to strike a ball with a hollow part i formed inside. The hollow part i includes a reinforcing wall part 9 via a gap 8 with the rear surface 3b of the face board shape part 3. The rear surface 3b of the face board shape part 3 which is deformed by striking the ball is abutted on the reinforcing wall part 9. The thickness T of the gap 8 is larger in the peripheral edge part 2B of the face than in the center part 2A of the face. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a golf club head that can improve resilience performance.
[0002]
[Prior art and problems to be solved by the invention]
The present applicant has already proposed the following Patent Document 1. As shown in FIG. 10, this is a so-called double-faced head having a hollow structure a in which a reinforcing plate b facing the back surface is arranged on the back surface side of a face plate-like portion f having a face surface F. Proposed structure. In a static state. A gap c is provided between the reinforcing plate b and the face plate portion a. The thickness S of the gap c is set so that the back surface of the face plate-like portion f deformed when hit with a high head speed can come into contact with the reinforcing plate b. In such a head a, the thickness of the face plate-like portion f can be reduced to improve the resilience, and excessive deformation of the face plate-like portion a can be restricted, thereby improving the durability.
[0003]
[Patent Document 1]
JP-A-11-192329 [0004]
However, in the conventional double-face structure head, the thickness S of the gap c is set to be substantially the same at the face center portion and the face peripheral portion. The coefficient of restitution of the head is large when the ball is hit at the center of the face, and is smaller at the periphery. For this reason, the difference in resilience performance tends to increase between the central portion and the peripheral portion. Further, the area of the high repulsion area having a large restitution coefficient among the face surfaces F is relatively small.
[0005]
In recent years, the upper limit of the coefficient of restitution of the head has been regulated in the Royal and Ancient Golf Club of St. Andrews (R & A) and the National Golf Association (USPGA).
[0006]
The present invention has been devised in view of the above-described problems, and the coefficient of restitution at the peripheral edge of the face is increased on the basis that the thickness of the gap is larger at the outer face of the face than at the center of the face. It is an object of the present invention to provide a golf club head that is useful for reducing the coefficient of restitution at the center of the face while achieving uniform rebound performance.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention is a golf club head having a face plate-like portion having a face surface for hitting a ball and having a hollow portion therein, the face plate-like portion being provided in the hollow portion. A reinforcing wall portion disposed between the back surface of the face plate and a back surface of the face plate-like portion deformed by hitting the ball, and having a thickness greater than that of the center portion of the face. It is characterized by being large at the periphery of the face.
[0008]
In this specification, the “face central portion” is a region surrounded by a circle having a radius of 10 mm with the sweet spot point as the center, and the “face peripheral portion” is a region outside the face central portion. When the thickness of the gap is simply referred to, the average value is used when it changes in the central portion and the outer portion. The sweet spot point is a point where a normal drawn from the center of gravity of the head to the face surface intersects the face surface.
[0009]
According to a second aspect of the present invention, in the gap, the ratio (S2 / S1) of the minimum thickness S1 at the center of the face to the maximum thickness S2 at the peripheral edge of the face is 1.1-7. 5. The golf club head according to claim 1, wherein the golf club head is 5.
[0010]
According to a third aspect of the present invention, the gap has a minimum thickness S1 at the center of the face of 0.2 to 1.0 mm, and a maximum thickness S2 at the periphery of the face of 0.4 to 0.4. 3. The golf club head according to claim 1, wherein the golf club head is 1.5 mm.
[0011]
According to a fourth aspect of the present invention, the face plate-like portion is formed with a substantially constant thickness, and the reinforcing wall portion has a face at the center of the abutting surface that contacts the face plate-like portion. 4. The golf club head according to claim 1, wherein the golf club head has a convex cross-section that protrudes toward the plate-like portion.
[0012]
The invention according to claim 5 is the golf club head according to any one of claims 1 to 4, wherein the coefficient of restitution is 0.825 or more and less than 0.830. The coefficient of restitution of the head is S. G. A. The value measured based on Procedure for Measuring the Velocity Ratio of a Club Head for Conformance to Rule 4-1e and Revisiion 2 (February 8, 1999).
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing an example of the golf club head of the present embodiment, FIG. 2 is a side view seen from the face side, FIG. 3 is a cross-sectional view taken along the line AA in FIG. FIG. 5 is a partially enlarged view of FIG. 4, and FIG. 6 is an exploded perspective view of the head.
[0014]
A golf club head 1 (hereinafter sometimes simply referred to as “head 1”) 1 of this embodiment is connected to a face plate-like portion 3 having a face surface 2 for hitting a ball and an upper edge 2a of the face surface 2. The crown portion 4 forming the upper surface of the head, the sole portion 5 connecting to the lower edge 2b of the face surface 2 and forming the bottom surface of the head, and the crown portion 4 and the sole portion 5 are joined to each other from the toe side edge 2c of the face surface 2 to the back face. A side portion 6 extending through the heel side edge 2d of the face surface 2 and one end of a shaft (not shown) disposed near the intersection on the heel side of the face portion 2, the crown portion 4 and the side portion 6 are mounted. For example, a wood-type one having a neck portion 7 and having a hollow portion i formed therein and forming a driver (# 1) is illustrated.
[0015]
In the present embodiment, the face plate-like portion 3 is formed with a substantially constant thickness T. The thickness T of the face plate portion 3 is not particularly limited, but is preferably 0.5 to 3.0 mm, more preferably 1.0 to 2.5 mm. If the thickness T is less than 0.5 mm, the resilience can be improved, but the strength tends to be insufficient, and the durability may be deteriorated. Conversely, if the thickness T exceeds 3.0 mm, the durability may be improved. However, the resilience performance tends to decrease overall.
[0016]
In the head 1 of the present invention, a reinforcing wall portion 9 is arranged in the hollow portion i with a gap 8 between the back surface 3 b of the face plate-like portion 3. The reinforcing wall portion 9 has an abutting surface 9a with which the back surface 3b of the face plate-like portion 3 can abut upon hitting. Further, the gap 8 is determined so that the back surface 3b of the face plate-like portion 3 deformed by hitting the ball can come into contact with the reinforcing wall portion 9 and the contact surface 9a. Thereby, the reinforcement wall part 9 can control the excessive deformation | transformation of the face plate-shaped part 3, and can aim at the improvement of durability. However, it goes without saying that the back surface 3b of the face plate-like portion 3 may not come into contact with the reinforcing wall portion 9 at the time of hitting in the case of hitting to such an extent that the head speed is extremely small and does not affect the durability of the head at all. Yes.
[0017]
If the thickness t of the reinforcing wall portion 9 is too large, the weight of the head is increased, which is not preferable. On the contrary, if the thickness t of the reinforcing wall portion 9 is too small, the rigidity is insufficient, and the deformation of the face plate-like portion 3 occurs. This is not preferable because the effect of suppressing the deficiency is insufficient. From such a viewpoint, the thickness t of the reinforcing wall portion 9 (the largest thickness when the thickness changes) is, for example, 1.0 to 3.0 mm, preferably 1.5 to 2.5 mm, particularly preferably. It is desirable that the thickness is 1.8 to 2.3 mm.
[0018]
Further, by adjusting the thickness of the gap 8, it is possible to control the amount of deformation of the face plate portion 3 at the time of impact. Conventionally, the thickness S of the gap 8 is set to be substantially constant, but in the head 1 of the present invention, the thickness S of the gap 8 is larger at the face peripheral portion 2B than at the face center portion 2A. . In the present embodiment, as shown in an enlarged view in FIG. 5, the back plate 3 b is flattened by forming the face plate-like portion 3 with a substantially constant thickness T, while the abutment of the reinforcing wall portion 9. The example in which the thickness S of the air gap 8 is increased at the face peripheral part 2B by making the central part of the surface 9a convex to the face plate-like part 3 side is raised.
[0019]
As shown in FIG. 7A, such a head 1 has a relatively small elastic deformation amount δ1 at the time of hitting in the face central portion 2A, which tends to be disadvantageous in strength, and maintains strength and resilience performance. Suppression can be achieved. In particular, it becomes possible to adjust the resilience performance in accordance with the upper limit value of the resilience coefficient restricted in the golf rules. Particularly preferably, it is desirable to obtain the maximum restitution coefficient within a range satisfying the rule, specifically, to set the restitution coefficient at the sweet spot point SS to 0.825 or more and less than 0.830.
[0020]
Further, as shown in FIG. 7 (B), the head 1 has a relatively large amount of elastic deformation δ2 at the time of hitting the ball in the face peripheral portion 2B, which is relatively advantageous in terms of strength, so that the resilience performance can be improved. it can. This can increase the area of the face surface 2 where the coefficient of restitution is large as compared with the conventional case, and can increase the area of high resilience. Further, it is possible to easily reduce the difference in the restitution coefficient between the face center portion 2A and the face peripheral portion 2B, that is, to make the restitution coefficient uniform in the face surface.
[0021]
The gap 8 is not particularly limited, but it is preferable that the minimum thickness S1 at the face center portion 2A is, for example, 0.2 to 1.5 mm, more preferably 0.5 to 1.0 mm. When the thickness S1 is less than 0.2 mm, there is a tendency that the amount of deformation of the face plate-like portion 3 is not sufficiently obtained when hitting at the face central portion 2A, and the coefficient of restitution is excessively reduced. If it exceeds 5 mm, the amount of deformation at the face central portion 2A becomes excessively large, which may reduce durability. In the present embodiment, the thickness S1 of the gap 8 facing the center portion 2A of the face is exemplified as being substantially constant, but the present invention is not limited to this.
[0022]
The gap 8 is not particularly limited, but it is desirable that the maximum thickness S2 at the face peripheral edge 2B is, for example, 0.4 to 2.0 mm, more preferably 0.5 to 1.2 mm. When the thickness S2 is less than 0.4 mm, there is a tendency that a sufficient amount of deflection of the face plate-like portion 3 cannot be obtained at the time of hitting the face peripheral edge portion 2B, and improvement in resilience performance cannot be expected. If it exceeds 2.0 mm, the amount of bending at the face peripheral portion 2B becomes too large, and the durability may be reduced. Particularly preferably, as in the present embodiment, the gap 8 facing the peripheral edge 2B of the face changes so that the thickness gradually increases toward the peripheral edge of the face 2.
[0023]
Particularly preferably, the gap S is a ratio (S2) of the minimum thickness S1 at the face center portion 2A and the maximum thickness S2 at the face peripheral portion 2B of the face surface 2 as shown in an enlarged view in FIG. / S1) is 1.1 to 10.0, more preferably 1.4 to 5.0, and still more preferably 1.8 to 3.0. The thicknesses S1 and S2 are measured perpendicular to the back surface 3b of the face plate portion 3.
[0024]
Further, various experiments were conducted by changing the surface area of the face surface 2 and the thickness T of the face plate-like portion 3, and as a result, the thickness T (mm) of the face plate-like portion 3 and the area Af (cm 2 ) of the face surface 2. ) And the thickness S1 (mm) of the gap, it has been found desirable to satisfy the following formula (1).
35 ≦ (T × Af) / S1 ≦ 1800 (1)
[0025]
If the value of {(T × Af) / S1} is less than 35, the thickness S1 of the air gap 8 in the face center portion 2A tends to be relatively large and the durability tends to be impaired. The thickness S1 of the air gap 8 becomes relatively small and it is difficult to improve the resilience performance. It is particularly preferable to satisfy the following formula (2) or (3).
45 ≦ (T × Af) / S1 ≦ 1600 (2)
55 ≦ (T × Af) / S1 ≦ 1400 (3)
[0026]
The head 1 can be formed of various metal materials such as aluminum alloy, titanium, titanium alloy, and stainless steel. In this example, as shown in FIG. 6, the face plate-like portion 3, the head main portion 10, and the sole plate 11 are separately formed, and these are fixedly joined by welding. The head main portion 10 is made of a casting product integrally including a crown portion 4, a side portion 6, a neck portion 7 and a reinforcing wall portion 9, and has a face plate portion 3 on the front surface and a sole plate 11 on the bottom surface. Openings O1 and O2 are formed, respectively. However, the head of the present invention is not particularly limited with respect to the manufacturing method, and can be manufactured by various methods.
[0027]
8A to 8D show another embodiment of the present invention. 8A, the contact surface 9a of the reinforcing wall portion 9 has a stepped cross section, whereby the thickness of the gap 8 increases stepwise toward the periphery of the face surface 2. Is shown. In FIG. 8B, the contact surface 9a of the reinforcing wall 9 has an arcuate cross section. The center of the arc of this form is set on the hollow portion i side. 8C, the reinforcing wall portion 9 has a parallel portion 10 substantially parallel to the back surface of the face center portion 2A, and a cross-sectional arc shape from the parallel portion 10 toward the periphery of the face surface 2. Arc portion 11. The arc portion 11 has a center of curvature radius on the face surface 2 side. 8D, the reinforcing wall portion 9 includes a parallel portion 12 that is substantially parallel to the back surface of the face center portion 2A, and an inclined portion 13 that inclines in a tapered shape from the parallel portion 10 toward the periphery of the face surface 2. Including. In any aspect, the horizontal cross section has the same shape. Further, the reinforcing wall portion 9 does not have to be arranged over the entire area of the back surface 3b of the face plate-like portion 3 as shown by disassembling the head in FIG. Thus, the head 1 of the present invention can be implemented in various shapes.
[0028]
【Example】
The heads of the following examples and comparative examples were prototyped, and the resilience coefficient and durability of the head were tested. As head common specifications, the head volume was 350 cm 3 , the head mass was 195 g, the face area was 45 cm 3, and others were prototyped based on the specifications in Table 1. In addition, as shown in FIG. 6, the head of the embodiment is fixed to the main part of the head by lost wax precision casting by welding a face plate-like part in which a face round is formed by pressing and a sole plate made of a cast product. And manufactured. Further, the head main portion, the face plate portion, and the sole plate are all formed of a titanium alloy (Ti-6Al-4V). The test method is as follows.
[0029]
<Restitution coefficient>
The rebound characteristics of the head are as follows. S. G. A. Proceedure for Measuring the Velocity Ratio of a Club Head for Conformance to Rule 4-1e, Revisiion 2 (February 8, 1999). Specifically, a golf ball is launched using a ball launching device, is caused to collide with a sweet spot on the face portion of the head placed without being fixed on the pedestal, and an incident velocity Vi and a rebound velocity immediately before the collision of the golf ball. Measure Vo. Then, when the incident speed of the golf ball is Vi, the rebound speed is Vo, the head mass is M, and the average mass of the golf ball is m, the restitution coefficient e is calculated by the following equation.
(Vo / Vi) = (eM−m) / (M + m)
The distance from the golf ball launch port to the face portion is 55 inches, and the ball is allowed to collide with the face surface at a position that is not separated from the sweet spot position of the head by 5 mm or more. The golf ball uses Pinnacle Gold made by Titleist, and the initial velocity of the ball is set to 160 feet ± 0.5 feet.
[0030]
<Area of high repulsion area>
Grids were set up and down, left and right in steps of 1 cm with the sweet spot as the center, and the above restitution coefficient test was performed so that the ball collided with each grid, and the restitution coefficient other than the sweet spot was obtained. And the area of the area | region where a restitution coefficient becomes 0.820 or more was calculated. The larger the area, the wider and better the high repulsion area.
[0031]
<Durability>
Each test head is mounted with the same shaft, attached to a swing robot manufactured by Trutemper, and adjusted so that the head speed is 50 m / s. Golf balls ("MAXFRI HI" manufactured by Sumitomo Rubber Industries, Ltd.) -BRID ") was hit with 5000 balls for each club. Those that were able to strike 5000 shots without damaging the face were considered acceptable. Table 1 shows the test results.
[0032]
[Table 1]
[0033]
As a result of the test, in Comparative Example 1 in which the thickness of the face plate portion is set to be as thin as 2.0 mm, the restitution coefficient at the sweet spot is large and the high repulsion area is also secured, but in terms of durability Not practical. In the case of Comparative Example 2, since the thickness of the face plate portion is 2.6 mm, the durability is slightly improved, but it is still not sufficient. Furthermore, although the comparative example 3 has a reinforcing wall portion, the area of the high repulsion region is small because the thickness of the gap between the face plate-like portion is constant at 1.0 mm. That is, the difference in the coefficient of restitution is large between the central portion and the outer portion of the face surface.
[0034]
On the other hand, in the golf club head of the example, it can be confirmed that the rebound coefficient, durability, and area of the high rebound region are improved in a well-balanced manner, and the superiority of the present invention can be confirmed.
[0035]
【The invention's effect】
As described above, according to the first aspect of the present invention, the face plate shape that is disposed in the hollow portion inside the head via the gap between the back surface of the face plate portion and is deformed by hitting the ball. In addition, a reinforcing wall portion is in contact with the back surface of the portion, and the thickness of the gap is larger at the peripheral edge portion of the face than at the central portion of the face. Therefore, the amount of elastic deformation when the ball is hit at the center of the face, which tends to be disadvantageous in terms of strength, can be set relatively small to maintain strength and suppress resilience performance. On the other hand, the amount of elastic deformation when the ball is hit at the peripheral edge of the face, which is relatively advantageous in terms of strength, can be set relatively large. For this reason, the resilience performance can be further improved in the outer portion. This is useful for creating a wide range of areas where the coefficient of restitution is large on the face surface, increasing the area of high resilience, and reducing the difference in coefficient of restitution between the center of the face and the periphery of the face. Helps to homogenize.
[0036]
Further, as in the second aspect of the invention, when the ratio (S2 / S1) between the minimum thickness S1 at the center of the face and the maximum thickness S2 at the peripheral edge of the face is regulated within a certain range. Furthermore, as in the third aspect of the present invention, when the numerical values of the minimum thickness S1 and the maximum thickness S2 are regulated, the effect can be achieved more reliably.
[0037]
According to a fourth aspect of the present invention, the face plate-like portion is formed with a substantially constant thickness, and the central portion of the contact surface where the reinforcing wall portion comes into contact with the face plate-like portion is the face plate. The gap can be easily adjusted by forming a convex cross section projecting to the shape portion side.
[0038]
Further, as in the invention described in claim 5, by adjusting the thickness of the gap, the restitution coefficient can be set to 0.825 or more and less than 0.830, and is matched with the upper limit value of the restitution coefficient limited in the golf rule. The resilience performance can be adjusted.
[Brief description of the drawings]
FIG. 1 is a plan view of a head showing an example of a golf club head of an embodiment.
FIG. 2 is a side view as seen from the face side.
FIG. 3 is a cross-sectional view taken along the line AA of FIG.
4 is a cross-sectional view taken along the line BB in FIG.
FIG. 5 is a partially enlarged view of FIG. 4;
FIG. 6 is an exploded perspective view of a head.
7A and 7B are partial cross-sectional views showing an example of hitting a ball.
8A to 8D are partial cross-sectional views showing other embodiments of the present invention.
FIG. 9 is an exploded perspective view of a head showing another embodiment of the present invention.
FIG. 10 is a cross-sectional view of a conventional head.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Golf club head 2 Face surface 2A Face center part 2B Face peripheral part 3 Face plate-like part 4 Crown part 5 Sole part 6 Side part 8 Space | gap 9 Reinforcement wall part SS Sweet spot point

Claims (5)

  1. A golf club head having a face plate-like portion having a face surface for hitting a ball and having a hollow portion therein,
    The hollow portion is provided with a reinforcing wall portion disposed between the back surface of the face plate-like portion via a gap and abutted with the back surface of the face plate-like portion deformed by hitting a ball,
    The golf club head according to claim 1, wherein a thickness of the gap is larger at a peripheral edge of the face than at a center of the face.
  2. The gap is characterized in that a ratio (S2 / S1) of a minimum thickness S1 at the center of the face and a maximum thickness S2 at the peripheral edge of the face is 1.1 to 10.0. Item 10. A golf club head according to Item 1.
  3. The gap has a minimum thickness S1 at the center of the face of 0.2 to 1.5 mm, and a maximum thickness S2 at the periphery of the face of 0.4 to 2.0 mm. The golf club head according to claim 1 or 2.
  4. The face plate-like portion is formed with a substantially constant thickness, and the reinforcing wall portion has a cross-sectional convexity in which a central portion of a contact surface that comes into contact with the face plate-like portion is raised toward the face plate-like portion side. The golf club head according to claim 1, wherein the golf club head has a shape.
  5. 5. The golf club head according to claim 1, wherein the coefficient of restitution is 0.825 or more and less than 0.830.
JP2002346167A 2002-11-28 2002-11-28 Golf club head Pending JP2004174100A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009106529A (en) * 2007-10-30 2009-05-21 Sri Sports Ltd Golf club head
US7674186B2 (en) * 2007-05-22 2010-03-09 Bitko David M Direction and distance correcting golf putter
JP2011101800A (en) * 2009-11-11 2011-05-26 Acushnet Co Golf club head with replaceable face
JP2012525214A (en) * 2009-04-27 2012-10-22 ナイキ インターナショナル リミテッド Golf club head or other ball striking device having a reinforced or locally stiffened face portion
JP2012531257A (en) * 2009-06-23 2012-12-10 ナイキ インターナショナル リミテッド Golf club and golf club head
US8758164B2 (en) * 2008-05-30 2014-06-24 Cobra Golf Incorporated Golf club head with sound tuning
US20150165280A1 (en) * 2013-12-18 2015-06-18 Acushnet Compnay Golf club head
JP2015192781A (en) * 2014-03-31 2015-11-05 ダンロップスポーツ株式会社 golf club head
US9393473B2 (en) 2013-03-06 2016-07-19 Nike, Inc. Golf club head or other ball striking device having reinforced sole
US10384107B2 (en) 2013-03-06 2019-08-20 Karsten Manufacturing Corporation Golf club head or other ball striking device having reinforced sole

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7674186B2 (en) * 2007-05-22 2010-03-09 Bitko David M Direction and distance correcting golf putter
JP2009106529A (en) * 2007-10-30 2009-05-21 Sri Sports Ltd Golf club head
US8758164B2 (en) * 2008-05-30 2014-06-24 Cobra Golf Incorporated Golf club head with sound tuning
JP2012525214A (en) * 2009-04-27 2012-10-22 ナイキ インターナショナル リミテッド Golf club head or other ball striking device having a reinforced or locally stiffened face portion
US8608585B2 (en) 2009-04-27 2013-12-17 Nike, Inc. Golf club head or other ball striking device having a reinforced or localized stiffened face portion
JP2012531257A (en) * 2009-06-23 2012-12-10 ナイキ インターナショナル リミテッド Golf club and golf club head
US10220268B2 (en) 2009-11-11 2019-03-05 Acushnet Company Golf club head with replaceable face
US9682289B2 (en) 2009-11-11 2017-06-20 Acushnet Company Golf club head with replaceable face
JP2011101800A (en) * 2009-11-11 2011-05-26 Acushnet Co Golf club head with replaceable face
US10478691B2 (en) 2013-03-06 2019-11-19 Karsten Manufacturing Corporation Golf club head or other ball striking device having reinforced sole
US9393473B2 (en) 2013-03-06 2016-07-19 Nike, Inc. Golf club head or other ball striking device having reinforced sole
US10384107B2 (en) 2013-03-06 2019-08-20 Karsten Manufacturing Corporation Golf club head or other ball striking device having reinforced sole
US9827473B2 (en) 2013-03-06 2017-11-28 Karsten Manufacturing Corporation Golf club head or other ball striking device having reinforced sole
US9457241B2 (en) * 2013-12-18 2016-10-04 Acushnet Company Golf club head
US20150165280A1 (en) * 2013-12-18 2015-06-18 Acushnet Compnay Golf club head
JP2015192781A (en) * 2014-03-31 2015-11-05 ダンロップスポーツ株式会社 golf club head

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