JP2004008409A - Golf club head - Google Patents

Golf club head Download PDF

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Publication number
JP2004008409A
JP2004008409A JP2002164792A JP2002164792A JP2004008409A JP 2004008409 A JP2004008409 A JP 2004008409A JP 2002164792 A JP2002164792 A JP 2002164792A JP 2002164792 A JP2002164792 A JP 2002164792A JP 2004008409 A JP2004008409 A JP 2004008409A
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Japan
Prior art keywords
wall portion
face
head
thickness
wall
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Granted
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JP2002164792A
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Japanese (ja)
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JP4367822B2 (en
Inventor
Akio Yamamoto
山本 晃生
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Sumitomo Rubber Ind Ltd
住友ゴム工業株式会社
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Priority to JP2002164792A priority Critical patent/JP4367822B2/en
Publication of JP2004008409A publication Critical patent/JP2004008409A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a golf club head that can stabilize the direction of the hit ball. <P>SOLUTION: The golf club head 1 is provided with a face wall 2 at which the ball is hit, a crown wall 3 that continues a top face of the head contiunously with the face wall 2, a sole wall 4 that constitutes a bottom face of the head continuously with the face wall 2, a side wall 5 that stretches between the crown wall 3 and the sole wall 4 from the tow side edge 2t of the face wall 2 to the heel side edge 2h of the face wall 2 through the back face, and a shaft insertion part 6 that is formed in the visinity of a crossing part where the crown wall 3, the side wall 5 and the face wall 2 cross with each other on the heel side. On the side wall 5 a thick part 7 is provided that has a thickness t1 of 1.2 to 5.0 times a thickness t3 of the crown wall 3 and th thickness t3 of the sole wall 4 and continuously stretches from the tow side edge 2t to at least the shaft insertion part 6. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a golf club head capable of increasing the moment of inertia and stabilizing the directionality of a hit ball.
[0002]
[Prior art and problems to be solved by the invention]
In order to stabilize the directionality of the hit ball, various attempts have been made for golf club heads. For example, Utility Model Registration Publication No. 2566519 proposes that a thick portion having a large thickness is formed separately on the toe side and the heel side in the crown portion, the side portion, or the sole portion. Japanese Patent Application Laid-Open No. 11-155982 proposes that, for example, in the sole portion, the thickness of the central portion is made thinner than the thickness of the peripheral portion. However, all of the above proposals leave room for further improvement with respect to the increase of the moment of inertia.
[0003]
The present invention has been devised in view of the above problems, and the thickness t1 of the side wall portion is 1.2 times or more the thickness t2 of the crown wall portion and the thickness t3 of the sole wall portion. It is an object of the present invention to provide a golf club head that is useful for increasing the moment of inertia more efficiently and stabilizing the directionality of the hit ball on the basis of providing a thick portion.
[0004]
[Means for Solving the Problems]
According to the first aspect of the present invention, a face wall portion for hitting a ball, a crown wall portion connected to the face wall portion to form a head upper surface, a sole wall portion connected to the face wall portion to form a head bottom surface, and the crown A side wall portion extending between a wall portion and a sole wall portion from a toe side edge of the face wall portion through a back face to a heel side edge of the face wall portion; and the crown wall portion, the side wall portion and the face wall portion Is a golf club head having a shaft insertion portion provided in the vicinity of the intersection where the heel side intersects, and the side wall portion has a thickness t2 of the crown wall portion and a thickness t3 of the sole wall portion. A thick portion having a thickness t1 of 1.2 to 5.0 times and extending continuously from the toe side edge to the shaft insertion portion is provided.
[0005]
The invention according to claim 2 is the golf club head according to claim 1, wherein a thickness t1 of the thick part is 1.5 to 3.5 mm.
[0006]
According to a third aspect of the present invention, in the golf according to the first or second aspect, the thickness t1 of the thick portion is 2.0 to 3.5 mm and the head volume is 130 to 200 cm 3. Club head.
[0007]
According to a fourth aspect of the present invention, the thickness t2 of the crown wall portion is 0.6 to 1.0 mm, and the thickness t3 of the sole wall portion is 1.0 to 1.6 mm. Item 4. The golf club head according to any one of Items 1 to 3.
[0008]
According to a fifth aspect of the present invention, in the thick part, the thickness t1 is 1.5 times or more the thickness t2 of the crown wall part and the thickness t3 of the sole wall part. Item 5. A golf club head according to any one of Items 1 to 4.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 is a front view of a golf club head according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a bottom view thereof, FIG. 4 is a sectional view taken along line AA in FIG. FIG. 6 is a cross-sectional view taken along line B-B, and FIG. 6 illustrates a cross-sectional view taken along line C-C in FIG. In the figure, the head 1 is shown in a normal state where it is placed on the horizontal plane HP at a specified lie angle α and loft angle β.
[0010]
In the figure, the golf club head of the present embodiment (hereinafter, simply referred to as "head".) 1, head volume 130~200Cm 3 mm, more preferably about 130~180Cm 3, the head mass 200 An example is a wood type that is used as a so-called fairway wood having a real loft angle of about 14 to 22 °. The head 1 of this embodiment has a hollow structure made of a metal material and having a hollow portion i formed therein. The hollow portion i may be left hollow or may be filled with resin or the like. As said metal material, various materials, such as aluminum alloy, titanium, a titanium alloy, stainless steel, can be used, for example. The head 1 can be manufactured by forming these metal materials into parts having a predetermined shape by, for example, casting, forging, or pressing, and joining them by welding or the like. A fiber reinforced resin or the like may be used for a part or all of the head 1.
[0011]
The head 1 includes a face wall portion 2 for hitting a ball, a crown wall portion 3 connected to the face wall portion 2 and forming the upper surface of the head, a sole wall portion 4 connecting to the face wall portion 2 and forming the bottom surface of the head, A side wall portion 5 extending between the crown wall portion 3 and the sole wall portion 4 from the toe side edge 2t of the face wall portion 2 through the back face to the heel side edge 2h of the face wall portion 2 is provided. Further, a shaft insertion portion 6 having a shaft insertion hole 6a into which a shaft (not shown) is inserted in the vicinity of the intersection portion X where the crown wall portion 3, the side wall portion 5, and the face wall portion 2 intersect on the heel h side. Is formed.
[0012]
As shown in FIGS. 5 and 6, the shaft insertion portion 6 extends into the head, and in this example, the shaft insertion portion 6 is configured integrally with the side wall portion 4. Further, since the axial center line CL of the shaft insertion hole 6a substantially coincides with the axial line of the shaft to be inserted later, when the head 1 is tilted to the specified lie angle α, the axial center line of the shaft insertion hole 6a. CL can be used as a reference.
[0013]
In the conventional general head 1, the thickness of the sole wall portion 4 is the largest, and the crown wall portion 4 and the side wall portions 5 are formed thinner than this. On the other hand, in the present invention, in order to increase the moment of inertia of the head 1, the side wall portion 5 is provided with the crown wall portion 4 and the thick wall portion 7 having a larger thickness than the side wall portion 5. . In a particularly preferable aspect, the side wall portion 5 itself can constitute the thick portion 7. The thick portion 7 has a thickness t1 that is set to 1.2 to 5.0 times the thickness t2 of the crown wall portion 3 and the thickness t3 of the sole wall portion 4, and from the toe side edge 2t. At least the shaft insertion portion 6 is continuously extended. The thickness t2 of the crown wall portion 3 and / or the thickness t3 of the sole wall portion 4 is based on the maximum value when the thickness changes.
[0014]
Thus, by providing the thick wall portion 7 having a larger thickness than the thickness t2 of the crown wall portion 3 and the thickness t3 of the sole wall portion 4 in a wide range on the side wall portion 5 surrounding the gravity center G, the gravity center More weight can be efficiently distributed around G. Therefore, the moment of inertia around the vertical axis passing through the center of gravity G is increased more efficiently than in the prior art. Further, even when the face wall portion 2 is hit at a position where the sweet spot point is removed, the shake of the head 1 around the vertical axis can be reduced, and the directionality of the hit ball can be stabilized.
[0015]
When the thickness t1 of the thick wall portion 7 is less than 1.2 times the thickness t2 of the crown wall portion 3 or the thickness t3 of the sole wall portion 4, more of the side wall portion 5 away from the center of gravity G The weight cannot be distributed, and the effect of increasing the moment of inertia is not sufficient. Conversely, if the thickness t1 of the thick portion 7 exceeds 5.0 times the thickness t2 of the crown wall portion 3 or the thickness t3 of the sole wall portion 4, the difference in thickness becomes excessive, resulting in a significant increase in head weight. This is not preferable because it tends to cause inconveniences such as excessive increase or deterioration of durability. Although not particularly limited, the thickness t1 of the thick portion 7 is preferably 1.5 to 3.5 mm, more preferably 2.0 to 3.5 mm, still more preferably 2.5 to 3.5 mm, particularly preferably. Is preferably 3.0 to 3.5 mm.
[0016]
The thickness t2 of the crown wall portion 3 and the thickness t3 of the sole wall portion 4 may be the same, but the thickness t2 of the crown wall portion 4 is smaller than the thickness t3 of the sole wall portion 4 and the center of gravity is lowered. In addition, it is desirable to help improve durability. For example, the ratio (t1 / t2) between the thickness t1 of the thick wall portion 7 and the thickness t2 of the crown wall portion 3 is preferably 1.2 to 4.5, more preferably 1.2 to 3.5, More preferably, it is desirable to set it as 1.5-3.0. On the other hand, the ratio (t1 / t3) between the thickness t1 of the thick wall portion 7 and the thickness t3 of the sole wall portion 4 is preferably 1.2 to 4.0, more preferably 1.2 to 3.0, More preferably, about 1.2 to 2.5 is desirable.
[0017]
Further, as shown in FIG. 7 by breaking the toe side portion of the head 1, the thick wall portion 7 may be constituted by a part of the side wall portion 5 in the height direction. That is, it includes a mode in which the non-thick portion 9 is provided on the crown wall portion 3 side and / or the sole wall portion 4 side of the thick portion 7. In this case, it is desirable that the vertical width of the thick portion 7 is 50% or more of the maximum width of the side wall portion 5. In order to further enhance the weight distribution effect by the thick portion 7, a mode in which the entire side wall portion 5 substantially constitutes the thick portion 7 as in the present embodiment is most desirable. The basic weight of the head 1 is naturally limited from the viewpoint of ease of swinging the club (so-called swing balance). Therefore, in order to distribute more weight to the thick portion 7, it is effective to reduce the weight of other portions. Specifically, it is desirable to make the thickness t2 of the crown wall portion 3 and the thickness t3 of the sole wall portion 4 thinner.
[0018]
From such a viewpoint, the thickness t2 of the crown wall portion 3 is preferably 0.6 to 1.0 mm, more preferably 0.7 to 1.0 mm, and particularly preferably 0.8 to 1.0 mm. Is desirable. The thickness t2 may be constant or may vary within the above range. When the thickness t2 of the crown wall portion 3 is increased, the effect of increasing the moment of inertia by the thick portion 7 is reduced, and the center of gravity G of the head is increased, which tends to be difficult for the average golfer. Conversely, even if the thickness t2 of the crown wall portion 3 is too thin, the strength is impaired and the durability tends to deteriorate.
[0019]
The thickness t3 of the sole wall 4 is preferably 0.9 to 1.7 mm, more preferably 1.0 to 1.6 mm, and particularly preferably about 1.2 to 1.6 mm. This thickness t3 may also be constant or may vary within the above range. If the thickness t3 of the sole wall portion 4 is excessive, the weight that can be distributed to the thick portion 7 is reduced, and the effect of increasing the moment of inertia tends to be reduced. Conversely, if the thickness t3 is too thin, the strength is impaired. The durability tends to deteriorate. By setting the thickness t3 of the sole wall portion 4 to be greater than the thickness t2 of the crown wall portion 3, the center of gravity G of the head can be positioned low.
[0020]
The thickness t2 and t3 of the crown wall portion 3 and the sole wall portion 4 is a portion to which a weight member, a different material, or the like is fixed, a portion provided with a marking or a decorative pattern by unevenness, a welded portion, or the like. The thickness of the main part which substantially forms the crown wall part 3 and the sole wall part 4 is excluded.
[0021]
As described above, in the head 1 in which the thick portion 7 is provided in the side wall portion 5 and the thicknesses t2 and t3 of the crown wall portion 3 and the sole wall portion 4 are set thin, the head 1 passes through the center of gravity G as described above. In addition to increasing the moment of inertia about the vertical axis, it was surprisingly found that the resilience performance of the head 1 is improved. Since the shape of the face wall portion 2 of the present embodiment is a horizontally long shape according to the custom, the vertical span supported by the crown wall portion 3 and the sole wall portion 4 rather than the horizontal span is more preferable. Is small and difficult to bend in this direction. However, as described above, by reducing the thickness t2 to t3 of the crown wall portion 3 and the sole wall portion 4 as compared with the side wall portion 5 and reducing the rigidity, the face is also affected at the time of hitting in the crown-sole direction. It is considered that a large deflection of the wall portion 2 is ensured, and the resilience performance of the head is improved based on such an action.
[0022]
Such improvement in the resilience performance of the head 1 can be further enhanced by improving the cross-sectional shape of the face wall 2. As shown in FIG. 4, the face wall portion 2 of this example includes a central portion 2a having a large thickness including a sweet spot of the face wall portion 2, and a peripheral portion 2b having a small thickness surrounding the central portion 2a. It is composed of The thickness t4 of the central portion 2a is, for example, 2.1 to 2.7 mm, more preferably 2.2 to 2.5 mm. If the thickness t4 is less than 2.1 mm, the strength may be insufficient and durability of the face may be reduced. Conversely, if the thickness t4 exceeds 2.7 mm, the rigidity is excessively increased and the deflection of the face wall portion is small. Thus, the resilience performance tends to be lowered.
[0023]
The thickness t5 of the peripheral portion 2b of the face wall 2 is not particularly limited, but is preferably 1.6 to 2.2 mm, more preferably 1.7 to 2.0 mm, for example. When the thickness t5 is less than 1.6 mm, it is effective for improving the resilience performance, but the strength of the peripheral portion 2b may be insufficient and the durability may be reduced. It is difficult to obtain the effect of improving the resilience performance of the head by bending the portion 2b more greatly. Note that the width W of the peripheral portion 2b shown in FIG. 4 is preferably set to about 5 to 10 mm, for example, in consideration of the strength of the face wall portion 2 and the resilience performance.
[0024]
In the head 1 applied to the fairway wood as in the present embodiment, an example of suitable head dimensions is as follows. In the normal state, as shown in FIG. 1, the face height Hf which is the maximum vertical length of the face wall 2 is preferably about 28 to 34 mm, more preferably about 30 to 32 mm. . If the face height Hf is too large, a so-called “top” that strikes the northern hemisphere of the ball is likely to occur when the ball placed on the lawn is hit. Conversely, if the face height Hf is too small, the so-called “tempura” that strikes the southern hemisphere of the ball. ”And tends to impair the flight distance. From the same viewpoint, the head height Hh that is the maximum height from the horizontal plane HP to the crown wall 3 is preferably 32 to 40 mm, more preferably 34 to 38 mm.
[0025]
The face width Wf, which is the maximum width of the face wall portion 2, is preferably 75 to 90 mm, and more preferably 79 to 86 mm. If the face width Wf is too small, the sweet area tends to be small and the direction of the hit ball tends to fluctuate. Conversely, if the face width Wf is too large, the center of gravity G of the head is separated from the axial center line CL of the shaft insertion hole to the toe side. As a result, the so-called center-of-gravity distance becomes large, and the gripping of the ball becomes worse (in the case of a right-handed golfer, the hitting ball tends to move rightward).
[0026]
As shown in FIG. 2, the head depth length Lh, which is the maximum distance between the leading edge LE of the head 1 and the back face, is preferably 57 to 67 mm, more preferably 60 to 64 mm. If the head depth length Lh is too small, the center of gravity is close to the face wall 2 side, so that the so-called center of gravity angle becomes small, and the gripping of the ball is likely to be worsened. In addition, the depth of the center of gravity becomes too large, and the loft angle at the time of impact increases and the flight distance is easily lost.
[0027]
FIG. 8 shows another embodiment of the present invention.
In this embodiment, the thick portion 7 is exemplified in which the thickness t1 gradually increases from the crown wall portion 3 side toward the sole wall portion 4 side. Such a configuration is preferable in that it can simultaneously reduce the center of gravity of the head while increasing the moment of inertia.
[0028]
FIG. 9 shows still another embodiment of the present invention.
In this embodiment, the sole wall portion 4 is formed on the face wall portion 2 side and the thin portion 4a has a small thickness t3a, and the thickness t3b that is connected to the thin portion 4a and forms the back face side is large. The thick part 4b. According to this embodiment, for example, the center of gravity G of the head can be further away from the face wall portion 2 and the center of gravity depth can be increased. Further, the depth of the center of gravity can be adjusted to an optimum position by adjusting the ratio between the thin portion 4a and the thick portion 4b, the thickness t3a, t3b, and the like.
[0029]
【Example】
A wood-type golf club head (fairway wood # 3) with a head volume of 160 cm 3 and a head mass of 210.5 g was made on the basis of the specifications shown in Table 1 using stainless steel 450, and moment of inertia, head restitution coefficient, durability Tested about. In addition, a head having a configuration outside the present invention was also prototyped and its performance was compared. The head was manufactured by separately forming a crown wall portion and a head main body portion obtained by removing the crown wall portion from the head, and welding both members. The shape of the head of Comparative Example 2 is as shown in FIG. The test method is as follows.
[0030]
<Inertia moment>
With the head set to the specified lie angle and face angle and grounded on a horizontal plane, the moment of inertia around the vertical axis passing through the center of gravity of the head is measured using the MOMENT OF INTERTIA MEASURING INSTRUMENT INSTRUMENT MODEL NO. Measured using 005-002. The larger the value, the better.
[0031]
<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, Revision 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 used was Pinnacle Gold manufactured by Titleist, and the initial velocity of the ball was 160 feet ± 0.5 feet.
[0032]
<Durability>
Each test head is fitted with the same shaft made of FRP to produce a prototype of a 43-inch wood-type golf club, and the club is attached to a swing robot and adjusted so that the head speed is 50 m / s. Balls were hit by 3000 balls for each club, and the damage of the head was visually observed. No damage was marked as ◯.
The test results are shown in Table 1.
[0033]
[Table 1]
[0034]
As a result of the test, it can be confirmed that the example has an increased moment of inertia compared to the comparative example. It can also be seen that the coefficient of restitution is improved. This is considered to be because the face wall portion is greatly deflected at the time of hitting the ball due to the thinned thickness of the crown wall portion and the sole wall portion. Moreover, it has confirmed that it had practically sufficient performance also about durability.
[0035]
【The invention's effect】
As described above, the golf club head of the present invention can increase the moment of inertia and stabilize the directionality of the hit ball. In addition, since the rigidity of the crown wall portion and the sole wall portion is relatively decreased as compared with the side wall portion, the deflection of the face wall portion at the time of hitting can be effectively increased, and the resilience performance can be improved to improve the hitting ball. Increase flight distance.
[Brief description of the drawings]
FIG. 1 is a front view of a head in a normal state showing an embodiment of the present invention.
FIG. 2 is a plan view thereof.
FIG. 3 is a bottom view of FIG. 1;
4 is a cross-sectional view taken along line AA in FIG.
5 is a cross-sectional view taken along line BB in FIG.
6 is a cross-sectional view taken along the line CC in FIG.
FIG. 7 is a partial perspective view of a side wall portion showing another embodiment.
FIG. 8 is a partial perspective view of a side wall portion showing another embodiment.
FIG. 9 is a cross-sectional view of a head showing another embodiment of the present invention.
10A and 10B are a plan view and a bottom view of a head of Comparative Example 2, respectively.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Golf club head 2 Face wall part 3 Crown wall part 4 Sole wall part 5 Side wall part 6 Shaft insertion part 6a Shaft insertion hole 7 Thick part t1 Thick part thickness t2 Crown wall part thickness t3 Sole Wall thickness

Claims (5)

  1. A face wall portion for hitting a ball, a crown wall portion connected to the face wall portion to form the upper surface of the head, a sole wall portion connected to the face wall portion to form the bottom surface of the head,
    A side wall portion extending between the crown wall portion and the sole wall portion from a toe side edge of the face wall portion through a back face to a heel side edge of the face wall portion, and the crown wall portion, the side wall portion and the face A golf club head having a shaft insertion portion provided in the vicinity of the intersection where the wall portion intersects with the heel side,
    The side wall portion has a thickness t1 that is 1.2 to 5.0 times the thickness t2 of the crown wall portion and the thickness t3 of the sole wall portion, and from the toe side edge to the shaft insertion portion. A golf club head comprising a thick portion extending continuously.
  2. The golf club head according to claim 1, wherein a thickness t1 of the thick part is 1.5 to 3.5 mm.
  3. 3. The golf club head according to claim 1, wherein a thickness t1 of the thick part is 2.0 to 3.5 mm and a head volume is 130 to 200 cm < 3 >.
  4. The thickness t2 of the crown wall portion is 0.6 to 1.0 mm, and the thickness t3 of the sole wall portion is 1.0 to 1.6 mm. Golf club head.
  5. 5. The thick portion according to claim 1, wherein the thickness t <b> 1 is 1.5 times or more of the thickness t <b> 2 of the crown wall portion and the thickness t <b> 3 of the sole wall portion. Golf club head.
JP2002164792A 2002-06-05 2002-06-05 Golf club head Active JP4367822B2 (en)

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Cited By (8)

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WO2006029113A3 (en) * 2004-09-08 2006-05-26 Nike Inc Golf clubs and golf club heads
US7156750B2 (en) * 2003-01-29 2007-01-02 Bridgestone Sports Co., Ltd. Golf club head
US7658687B2 (en) * 2006-09-28 2010-02-09 Sri Sports Limited Wood-type golf club head
JP2010259807A (en) * 2009-05-08 2010-11-18 Karsten Manufacturing Corp Golf club head and method of manufacture
JP2013527008A (en) * 2010-06-01 2013-06-27 テーラー メイド ゴルフ カンパニー インコーポレイテッド Hollow golf club head
US8821312B2 (en) 2010-06-01 2014-09-02 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture
US8827831B2 (en) 2010-06-01 2014-09-09 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature
US9089749B2 (en) 2010-06-01 2015-07-28 Taylor Made Golf Company, Inc. Golf club head having a shielded stress reducing feature

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US7156750B2 (en) * 2003-01-29 2007-01-02 Bridgestone Sports Co., Ltd. Golf club head
CN103182167B (en) * 2004-09-08 2014-12-10 耐克国际有限公司 Golf clubs and golf club heads
US7258625B2 (en) 2004-09-08 2007-08-21 Nike, Inc. Golf clubs and golf club heads
US8632420B2 (en) 2004-09-08 2014-01-21 Nike, Inc. Golf clubs and golf club heads
US7775903B2 (en) * 2004-09-08 2010-08-17 Nike, Inc. Golf clubs and golf club heads
US8110060B2 (en) 2004-09-08 2012-02-07 Nike, Inc. Golf clubs and golf club heads
US9724573B2 (en) 2004-09-08 2017-08-08 Karsten Manufacturing Corporation Golf clubs and golf club heads
CN103182167A (en) * 2004-09-08 2013-07-03 耐克国际有限公司 Golf clubs and golf club heads
WO2006029113A3 (en) * 2004-09-08 2006-05-26 Nike Inc Golf clubs and golf club heads
US7658687B2 (en) * 2006-09-28 2010-02-09 Sri Sports Limited Wood-type golf club head
JP2010259807A (en) * 2009-05-08 2010-11-18 Karsten Manufacturing Corp Golf club head and method of manufacture
US9168428B2 (en) 2010-06-01 2015-10-27 Taylor Made Golf Company, Inc. Hollow golf club head having sole stress reducing feature
US8827831B2 (en) 2010-06-01 2014-09-09 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature
US9011267B2 (en) 2010-06-01 2015-04-21 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature and shaft connection system socket
US9089749B2 (en) 2010-06-01 2015-07-28 Taylor Made Golf Company, Inc. Golf club head having a shielded stress reducing feature
US8821312B2 (en) 2010-06-01 2014-09-02 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture
US9168434B2 (en) 2010-06-01 2015-10-27 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture
US9174101B2 (en) 2010-06-01 2015-11-03 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature
US9265993B2 (en) 2010-06-01 2016-02-23 Taylor Made Golf Company, Inc Hollow golf club head having crown stress reducing feature
US9566479B2 (en) 2010-06-01 2017-02-14 Taylor Made Golf Company, Inc. Golf club head having sole stress reducing feature
US9610482B2 (en) 2010-06-01 2017-04-04 Taylor Made Golf Company, Inc Golf club head having a stress reducing feature with aperture
US9610483B2 (en) 2010-06-01 2017-04-04 Taylor Made Golf Company, Inc Iron-type golf club head having a sole stress reducing feature
US9656131B2 (en) 2010-06-01 2017-05-23 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature and shaft connection system socket
JP2013527008A (en) * 2010-06-01 2013-06-27 テーラー メイド ゴルフ カンパニー インコーポレイテッド Hollow golf club head
US9950223B2 (en) 2010-06-01 2018-04-24 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture
US9950222B2 (en) 2010-06-01 2018-04-24 Taylor Made Golf Company, Inc. Golf club having sole stress reducing feature
US9956460B2 (en) 2010-06-01 2018-05-01 Taylor Made Golf Company, Inc Golf club head having a stress reducing feature and shaft connection system socket
US10245485B2 (en) 2010-06-01 2019-04-02 Taylor Made Golf Company Inc. Golf club head having a stress reducing feature with aperture
US10300350B2 (en) 2010-06-01 2019-05-28 Taylor Made Golf Company, Inc. Golf club having sole stress reducing feature
US10369429B2 (en) 2010-06-01 2019-08-06 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature and shaft connection system socket
US10556160B2 (en) 2010-06-01 2020-02-11 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture

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