公开(公告)号：US20150119170A1

公开(公告)日：2015-04-30

申请号：US14525782

申请日：2014-10-28

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Kosuke TACHIBANA ,  Kazuhiko ISOGAWA

IPC: A63B37/00

CPC classification number: A63B37/0076 ,  A63B37/004 ,  A63B37/0043 ,  A63B37/0044 ,  A63B37/0045 ,  A63B37/0064 ,  A63B37/0092

Abstract: A golf ball includes a spherical core and a cover. The core includes an inner core, a mid core, and an outer core. A hardness H(C) is equal to or greater than a hardness H(B). A hardness H(E) is equal to or greater than a hardness H(D). An angle α is calculated by (Formula 1) from a thickness Y (mm) of the mid core, the hardness H(C), and the hardness H(D). An angle β is calculated by (Formula 2) from a thickness Z (mm) of the outer core, the hardness H(E), and the hardness H(F). Each of the angle α and a difference (α−β) between the angles α and β is equal to or greater than 0°. The golf ball has excellent flight performance upon a shot with a driver. α=(180/n)*a tan [{H(D)−H(C)}/Y]  (Formula 1) β=(180/n)*a tan [{H(F)−H(E)}/Z]  (Formula 2)

Abstract translation: 高尔夫球包括球形芯和盖。 芯部包括内芯，中芯和外芯。 硬度H（℃）等于或大于硬度H（B）。 硬度H（E）等于或大于硬度H（D）。 通过（式1）从中间芯的厚度Y（mm），硬度H（C）和硬度H（D）计算角度α。 角＆bgr 通过（式2）从外芯的厚度Z（mm），硬度H（E）和硬度H（F）计算出。 角度α和角度α和＆lt; bgr之间的角度α和差值（α＆amp; bgr） 等于或大于0°。 高尔夫球在驾驶员射击时具有出色的飞行性能。 α=（180 / n）* a tan [{H（D）-H（C）} / Y]（式1）＆bgr; =（180 / n）* a tan [{H（F）-H ）} / Z]（式2）

公开(公告)号：US20130303308A1

公开(公告)日：2013-11-14

申请号：US13947615

申请日：2013-07-22

Applicant: Dunlop Sports Co., Ltd.

Inventor： Kazuhiko ISOGAWA ,  Tsutomu HIRAU ,  Hirotaka NAKAMURA ,  Takahiro SHIGEMITSU

IPC: A63B37/00

CPC classification number: A63B37/0039 ,  A63B37/0031 ,  A63B37/0033 ,  A63B37/0035 ,  A63B37/0043 ,  A63B37/0045 ,  A63B37/0047 ,  A63B37/0062 ,  A63B37/0064 ,  A63B37/0066 ,  A63B37/0091 ,  A63B37/0092

Abstract: A first golf ball 2 includes a core 4, a mid-layer 6, and a cover 8. The core 4 includes a center 10 and an envelope layer 12. The mid-layer 6 includes a metal ion source (C) that can neutralize an ionomer resin. The mid-layer 6 has a melt flow rate (at 190° C. and 2.16 kg) of 4 g/10 minute or greater. The difference (H3−H1) between the JIS-C hardness H3 of the cover 8 and the JIS-C central hardness H1 of the center 10 is equal to or greater than 45. A second golf ball 22 includes a core 24, a mid-layer 28, and a cover 30. The mid-layer 28 has a melt flow rate (at 190° C. and 2.16 kg) of 4 g/10 minute or greater. Preferably, the mid-layer 28 includes a high melt viscosity resin (A), a low melt viscosity ionomer resin (B), and a metal ion source (C1).

Abstract translation: 第一高尔夫球2包括芯4，中间层6和盖8.芯4包括中心10和包层12.中间层6包括可以中和的金属离子源（C） 离聚物树脂。 中间层6具有4g / 10分钟或更高的熔体流动速率（190℃和2.16kg）。 盖8的JIS-C硬度H3与中心部10的JIS-C中央硬度H1之间的差（H3-H1）等于或大于45.第二高尔夫球22包括芯24， 层28和盖30.中间层28的熔体流动速率（在190℃和2.16kg）为4g / 10分钟或更大。 优选地，中间层28包括高熔体粘度树脂（A），低熔融粘度离聚物树脂（B）和金属离子源（C1）。

公开(公告)号：US20130196791A1

公开(公告)日：2013-08-01

申请号：US13723937

申请日：2012-12-21

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Takahiro SAJIMA ,  Kazuhiko ISOGAWA ,  Kosuke TACHIBANA ,  Hidetaka INOUE

IPC: A63B37/00

CPC classification number: A63B37/0021 ,  A63B37/0004 ,  A63B37/0006 ,  A63B37/0017 ,  A63B37/0018 ,  A63B37/0019 ,  A63B37/002

Abstract: A golf ball 2 has a large number of dimples 10 on a surface thereof. The golf ball 2 meets the following mathematical formula (I): Y≦3.8*X−2.894   (I), where X represents a ratio of a sum of areas of all the dimples 10 to a surface area of a phantom sphere of the golf ball, and Y represents a standard deviation (mm) of diameters of all the dimples 10.

Abstract translation: 高尔夫球2在其表面上具有大量凹坑10。 高尔夫球2符合以下数学公式（I）：Y@3.8*X-2.894（I），其中X表示所有凹坑10的面积之和与高尔夫球体的表面积的比率 球，Y表示所有凹坑10的直径的标准偏差（mm）。

公开(公告)号：US20180036602A1

公开(公告)日：2018-02-08

申请号：US15727047

申请日：2017-10-06

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Yoshiko TAKUBO ,  Kazuhiko ISOGAWA ,  Kosuke TACHIBANA

IPC: A63B37/00

CPC classification number: A63B37/0063 ,  A63B37/0003 ,  A63B37/0031 ,  A63B37/0033 ,  A63B37/0043 ,  A63B37/0045 ,  A63B37/0051 ,  A63B37/0076 ,  A63B37/008 ,  A63B37/0083 ,  A63B37/0092 ,  C08K5/098

Abstract: A golf ball 2 includes a core 4, a mid layer 6, a reinforcing layer 8, and a cover 10. When distances (%) from the central point of the core 4 to nine points and JIS-C hardnesses at the nine points, which are obtained by dividing a region from the central point of the core 4 to the surface of the core 4 at intervals of 12.5% of the radius of the core 4, are plotted in a graph, R2 of a linear approximation curve obtained by a least-square method is equal to or greater than 0.95. The difference (H(100)-H(0)) between a JIS-C hardness H(100) at the surface of the core 4 and a JIS-C hardness H(0) at the central point of the core 4 is equal to or greater than 15.

公开(公告)号：US20170304684A1

公开(公告)日：2017-10-26

申请号：US15649273

申请日：2017-07-13

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Kazuhiko ISOGAWA ,  Kosuke TACHIBANA

IPC: A63B37/00

CPC classification number: A63B37/0092 ,  A63B37/0043 ,  A63B37/0044 ,  A63B37/0054 ,  A63B37/0059 ,  A63B37/0063 ,  A63B37/0076

Abstract: A golf ball 2 includes a spherical core 4, an inner mid layer 6, an outer mid layer 8, a reinforcing layer 10, and a cover 12. When distances (%) from a central point of the core 4 to nine points and JIS-C hardnesses at the nine points, which nine points are obtained by dividing a region from the central point of the core 4 to a surface of the core 4 at intervals of 12.5% of a radius of the core 4, are plotted in a graph, R2 of a linear approximation curve obtained by a least-square method is equal to or greater than 0.95. Hm1 is greater than Hm2. Hc is less than Hm1. T2 is equal to or greater than 0.5 mm but equal to or less than 1.6 mm.

公开(公告)号：US20160367864A1

公开(公告)日：2016-12-22

申请号：US14902173

申请日：2014-10-07

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Kazuhiko ISOGAWA ,  Kosuke TACHIBANA

IPC: A63B37/00

CPC classification number: A63B37/0092 ,  A63B37/0031 ,  A63B37/0033 ,  A63B37/0039 ,  A63B37/004 ,  A63B37/0043 ,  A63B37/0044 ,  A63B37/0045 ,  A63B37/0051 ,  A63B37/0063 ,  A63B37/0064 ,  A63B37/0076 ,  A63B37/008 ,  A63B37/0083 ,  A63B37/0087 ,  A63B37/0094 ,  A63B37/0096

Abstract: [Object] To provide a golf ball that is excellent in high flight distance performance, excellent approach performance, feel at impact.[Solution] A golf ball includes a spherical core, a mid layer, an inner cover, and an outer cover. A hardness Hm of the mid layer is greater than a hardness Hinc of the inner cover which is greater than a hardness Houc of the outer cover. A difference (Hm−Houc) is greater than 25. A volume Vm of the mid layer is greater than a volume Vinc of the inner cover which is greater than a volume Vouc of the outer cover. A ratio [(Vm+Vinc+Vouc)/V] of a sum (Vm+Vinc+Vouc) relative to a volume V of an entirety of the golf ball is less than 0.30. A ratio (Vm/Vouc) is greater than 1.50. A product (Vm*Hm) and a product (Vouc*Houc) meet the following relationship: [(Vm*Hm)/(Vouc*Houc)]>3.0.

Abstract translation: 高尔夫球包括球形芯，中间层，内盖和外盖。 中间层的硬度Hm大于内盖的硬度Hinc大于外盖的硬度Houc。 差（Hm-Houc）大于25.中间层的体积Vm大于内盖的体积Vinc大于外盖的体积Vouc。 总和（Vm + Vinc + Vouc）相对于整个高尔夫球的体积V的比值[（Vm + Vinc + Vouc）/ V]小于0.30。 比率（Vm / Vouc）大于1.50。 产品（Vm * Hm）和产品（Vouc * Houc）满足以下关系：[（Vm * Hm）/（Vouc * Houc）]> 3.0。

公开(公告)号：US20160361592A1

公开(公告)日：2016-12-15

申请号：US15176639

申请日：2016-06-08

Applicant: Dunlop Sports Co. Ltd.

Inventor： Kazuhiko ISOGAWA ,  Hiroyuki TAKEUCHI

IPC: A63B24/00 ,  A63B69/36

CPC classification number: G06K9/00342 ,  A63B2220/18 ,  A63B2220/30 ,  A63B2220/806 ,  A63B2225/50 ,  G06K9/00543

Abstract: A golfer classification method in which, in order to classify a golfer based on his/her swing behavior, a first head speed HS1 of a short iron when the golfer hits a golf ball with the short iron is measured; a second head speed HS2 and a blow angle of a long iron when the golfer hits a golf ball with the long iron are measured; the head speed ratio HS2/HS1 is calculated; by comparing the blow angle with a first threshold, the golfer is classified into a down blow group or a non down blow group; and by comparing the head speed ratio HS2/HS1 with a second threshold, the golfer classified into the down blow group is further classified into a first down blow group or a second down blow group. A golf club selection method in which, for the golfer classified by the golfer classification method, a suitable golf club is selected.

Abstract translation: 一种高尔夫球员分类方法，其中为了根据他/她的挥杆行为对高尔夫球手进行分类，测量当高尔夫球手用短铁敲击高尔夫球时短铁的第一头速HS1; 测量当高尔夫球手用长铁击中高尔夫球时的第二头速HS2和长铁的吹制角; 计算头速比HS2 / HS1; 通过将吹风角度与第一阈值进行比较，将高尔夫球手分为下吹组或非吹风组; 并且通过将头速比HS2 / HS1与第二阈值进行比较，分类为下吹组的高尔夫球手进一步分为第一下吹组或第二下吹组。 一种高尔夫球杆选择方法，其中针对通过高尔夫球员分类方法分类的高尔夫球手选择合适的高尔夫球杆。

公开(公告)号：US20130324320A1

公开(公告)日：2013-12-05

申请号：US13906564

申请日：2013-05-31

Applicant: Dunlop Sports Co., Ltd.

Inventor： Kazuhiko ISOGAWA ,  Kosuke TACHIBANA ,  Takahiro SHIGEMITSU

IPC: A63B37/00

CPC classification number: A63B37/0054 ,  A63B37/0003 ,  A63B37/0033 ,  A63B37/0038 ,  A63B37/0039 ,  A63B37/0043 ,  A63B37/0044 ,  A63B37/0045 ,  A63B37/0062 ,  A63B37/0063 ,  A63B37/0064 ,  A63B37/0076 ,  A63B37/0092

Abstract: The present invention provides a golf ball comprising a spherical core composed of a spherical inner core layer and an outer core layer, an intermediate layer and a cover, wherein the inner core layer has a hardness difference (Hs1-Ho) between a surface hardness (Hs1) and a center hardness (Ho) of 5 or less in JIS-C hardness, the outer core is such that R2 of a linearly approximated curve obtained from a least square method is 0.95 or higher, when JIS-C hardness, measured at nine points obtained by dividing a thickness of the outer core in a radius direction of the spherical core into equal parts having 12.5% intervals therebetween, is plotted against distance (%) from a border point between the outer core layer and the inner core layer, and the intermediate layer has a slab hardness which is greater than a slab hardness of the cover.

Abstract translation: 本发明提供一种高尔夫球，其包括由球形内芯层和外芯层构成的球形芯，中间层和盖，其中内芯层具有表面硬度（Hs1-Ho）之间的硬度差（Hs1-Ho） Hs1），中心硬度（Ho）在JIS-C硬度中为5以下的中心硬度，外芯使得从最小二乘法得到的线性近似曲线的R2为0.95以上，JIS-C硬度 将外球芯的半径方向的厚度除以与外芯层和内芯层之间的边界部分的距离（％）相对于其间具有12.5％间隔的相等部分得到的9点， 并且中间层具有大于盖的板坯硬度的板坯硬度。

公开(公告)号：US20130324318A1

公开(公告)日：2013-12-05

申请号：US13906476

申请日：2013-05-31

Applicant: Dunlop Sports Co. Ltd.

Inventor： Kazuhiko ISOGAWA ,  Kosuke TACHIBANA ,  Takahiro SAJIMA ,  Toshiyuki TARAO

IPC: A63B37/00

CPC classification number: A63B37/0076 ,  A63B37/0003 ,  A63B37/0004 ,  A63B37/0006 ,  A63B37/0018 ,  A63B37/0021 ,  A63B37/0033 ,  A63B37/0038 ,  A63B37/0039 ,  A63B37/0044 ,  A63B37/0045 ,  A63B37/0062 ,  A63B37/0063 ,  A63B37/0075 ,  A63B37/0077 ,  A63B37/0092 ,  C08K5/09 ,  C08K5/098 ,  C09D175/04

Abstract: The present invention provides a golf ball comprising a golf ball body with a spherical core having one or more layers, an intermediate layer disposed outside the spherical core and a cover disposed outside the intermediate layer and a paint film formed on a surface of the golf ball body, and having a friction coefficient calculated using a contact force tester of 0.35 or more and 0.60 or less, wherein the golf ball body has specific plurality of dimples on the surface thereof, at least one layer of the spherical core is a rubber layer having a specific hardness distribution, and the rubber layer has a hardness at the outermost point which is greater than a hardness at the innermost point, and the intermediate layer has a slab hardness (Hm) which is greater than a slab hardness (Hc) of the cover.

Abstract translation: 本发明提供一种高尔夫球，其包括具有一个或多个层的球形芯的高尔夫球体，设置在球形芯外侧的中间层和设置在中间层外侧的盖和形成在高尔夫球表面上的漆膜 并且具有使用0.35以上且0.60以下的接触力试验机计算的摩擦系数，其中，所述高尔夫球体的表面具有特定的多个凹坑，所述球形芯的至少一层为具有 特定的硬度分布，并且橡胶层的最外点的硬度大于最内点处的硬度，中间层的板坯硬度（Hm）大于板的硬度（Hc）， 盖。

公开(公告)号：US20130324316A1

公开(公告)日：2013-12-05

申请号：US13872487

申请日：2013-04-29

Applicant: DUNLOP SPORTS CO., LTD.

Inventor： Kazuhiko ISOGAWA ,  Kosuke TACHIBANA

IPC: A63B37/00

CPC classification number: A63B37/0054 ,  A63B37/0076 ,  A63B37/0092 ,  A63B37/06 ,  C08K5/0025 ,  C08K5/09 ,  C08K5/098 ,  C08K2201/014 ,  C08L21/00

Abstract: A golf ball 2 includes a core 4, a first mid layer 6, a second mid layer 8, and a cover 12. The core 4 includes a center 18 and an envelope layer 20. The center 18 is formed by crosslinking a first rubber composition, and the envelope layer 20 is formed by crosslinking a second rubber composition. The first rubber composition or the second rubber composition includes a base rubber, a co-crosslinking agent, a crosslinking initiator, and an acid and/or a salt. The co-crosslinking agent is: (1) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms; and/or (2) a metal salt of an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms. A hardness Hm2 of the second mid layer 8 is greater than a hardness Hm1 of the first mid layer 6. The hardness Hm2 is greater than a hardness Hc of the cover 12.

Abstract translation: 高尔夫球2包括芯4，第一中间层6，第二中间层8和盖12.芯4包括中心18和包层20.中心18通过将第一橡胶组合物 并且通过交联第二橡胶组合物形成包络层20。 第一橡胶组合物或第二橡胶组合物包括基础橡胶，共交联剂，交联引发剂和酸和/或盐。 共交联剂是：（1）具有3-8个碳原子的α，β-不饱和羧酸; 和/或（2）具有3-8个碳原子的α，β-不饱和羧酸的金属盐。 第二中间层8的硬度Hm2大于第一中间层6的硬度Hm1。硬度Hm2大于盖12的硬度Hc。