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公开(公告)号：US10010761B2
公开(公告)日：2018-07-03
申请号：US15178179
申请日：2016-06-09
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Hyoungchol Kim , Masahide Onuki , Takahiro Sajima , Kohei Mimura
CPC classification number: A63B37/002 , A63B37/0006 , A63B37/0007 , A63B37/0018 , A63B37/0021 , G06T17/20
Abstract: A golf ball has, on a surface thereof, a rugged pattern composed of a land and a large number of dimples. A method for designing the rugged pattern includes the steps of: (1) assuming a large number of circles on a surface of a phantom sphere; (2) assuming a large number of generating points 16 based on positions of the large number of circles; (3) assuming a large number of Voronoi regions 18 on the surface of the phantom sphere by a Voronoi tessellation based on the large number of generating points 16; and (4) assigning a dimple and a land to the surface of the phantom sphere based on contours of the large number of Voronoi regions 18.
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公开(公告)号：US09555289B2
公开(公告)日：2017-01-31
申请号：US14749200
申请日：2015-06-24
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Kohei Mimura , Takahiro Sajima , Hyoungchol Kim , Masahide Onuki
CPC classification number: A63B37/0018 , A63B37/0017 , A63B37/0019 , A63B37/002 , A63B37/0021 , A63B37/009 , A63B37/0096
Abstract: A golf ball has a large number of dimples on a surface thereof. The golf ball meets the following mathematical formula (I): 1.320≦L1≦1.420 (I), where L1 represents a ratio of a lift coefficient CL1 which is measured under conditions of a Reynolds number of 1.290×105 and a spin rate of 2820 rpm, relative to a lift coefficient CL2 which is measured under conditions of a Reynolds number of 1.290×105 and a spin rate of 1740 rpm.
Abstract translation: 高尔夫球在其表面上具有大量凹坑。 高尔夫球符合以下数学公式（I）：1.320≤L1≤1.420（I），其中L1表示在雷诺数为1.290×105的条件下测得的升力系数CL1与旋转速率为2820的比例 rpm，相对于在雷诺数为1.290×105和旋转速率为1740rpm的条件下测量的升力系数CL2。
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公开(公告)号：US09452321B2
公开(公告)日：2016-09-27
申请号：US14226923
申请日：2014-03-27
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Hyoungchol Kim , Masahide Onuki
CPC classification number: A63B37/0006 , A63B37/0007 , A63B37/0018 , A63B37/002 , A63B37/0021 , A63B37/0033 , A63B37/0064 , A63B37/0074 , A63B37/0075 , A63B37/0097 , A63B45/00 , G06F17/50
Abstract: A golf ball 2 has, on a surface thereof, a rugged pattern composed of a land 10 and a large number of dimples 8. A process for designing the rugged pattern includes the steps of: (1) arranging a large number of generating points on a surface of a phantom sphere; (2) assuming a large number of Voronoi regions on the surface of the phantom sphere by a Voronoi tessellation based on the large number of generating points; (3) calculating centers of gravity of the Voronoi regions and setting the centers of gravity as new generating points; (4) assuming a large number of new Voronoi regions on the surface of the phantom sphere by a Voronoi tessellation based on a large number of the new generating points; and (5) assigning dimples and a land to the surface of the phantom sphere based on contours of the new Voronoi regions.
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公开(公告)号：US09403062B2
公开(公告)日：2016-08-02
申请号：US14072902
申请日：2013-11-06
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Hyoungchol Kim , Masahide Onuki , Takahiro Sajima , Kohei Mimura
CPC classification number: A63B37/002 , A63B37/0006 , A63B37/0007 , A63B37/0018 , A63B37/0021 , G06T17/20
Abstract: A golf ball has, on a surface thereof, a rugged pattern composed of a land and a large number of dimples. A method for designing the rugged pattern includes the steps of: (1) assuming a large number of circles on a surface of a phantom sphere; (2) assuming a large number of generating points 16 based on positions of the large number of circles; (3) assuming a large number of Voronoi regions 18 on the surface of the phantom sphere by a Voronoi tessellation based on the large number of generating points 16; and (4) assigning a dimple and a land to the surface of the phantom sphere based on contours of the large number of Voronoi regions 18.
Abstract translation: 高尔夫球的表面具有由陆地和大量凹坑构成的凹凸图案。 用于设计凹凸图案的方法包括以下步骤：（1）在幻影球的表面上假设大量的圆; （2）基于大量圆的位置假设大量的生成点16; （3）基于大量的生成点16，通过Voronoi镶嵌假设在幻影球的表面上存在大量的Voronoi区域18; 和（4）基于大量Voronoi区域18的轮廓，将一个凹坑和一个土地分配给幻影球体的表面。
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Patent Agency Ranking
公开(公告)号：US09079073B2
公开(公告)日：2015-07-14
申请号：US13659119
申请日：2012-10-24
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Hyoungchol Kim
CPC classification number: A63B37/0006 , A63B37/0018 , A63B37/002 , A63B37/0021 , G06T17/20
Abstract: A golf ball 2 has, on a surface thereof, a dimple pattern consisting of a land 10 and a large number of dimples 8. A process for designing the dimple pattern includes the steps of: (1) randomly arranging a large number of points on the surface of a phantom sphere; (2) calculating a distance between a first point and a second point which is a point closest to the first point; (3) deciding a radius on the basis of the distance; (4) assuming a circle which has a center at the first point and has the radius; and (5) assuming a dimple 8 whose contour coincides with the circle.
Abstract translation: 高尔夫球2在其表面上具有由平台10和多个凹坑8组成的凹坑图案。设计凹坑图案的过程包括以下步骤：（1）将大量的点随机排列在 幻影球的表面; （2）计算作为最靠近第一点的点的第一点与第二点之间的距离; （3）根据距离决定半径; （4）假设在第一点处具有中心并具有半径的圆; 和（5）假设其轮廓与圆形重合的凹坑8。
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公开(公告)号：US09849340B2
公开(公告)日：2017-12-26
申请号：US14856721
申请日：2015-09-17
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Kohei Mimura , Takahiro Sajima , Hyoungchol Kim
CPC classification number: A63B37/0006 , A63B37/0009 , A63B37/0017 , A63B37/0018 , A63B37/0019 , A63B37/0075
Abstract: A golf ball 2 has a large number of dimples 10 on a surface thereof. The contours of the dimples 10 are non-circular. A standard deviation of areas of the dimples 10 is equal to or less than 1.7 mm2. A ratio of a total area of the dimples 10 relative to a surface area of a phantom sphere of the golf ball 2 is equal to or greater than 80%. By comparting lines CS obtained by projecting sides of a regular dodecahedron, which is inscribed in the phantom sphere, onto the phantom sphere, a surface of the phantom sphere can be divided into 12 units Ut each of which meets the following mathematical formula (I): −2≦(Nt/12)−Nu≦2 (I), where Nt represents the total number of the dimples 10 and Nu represents the number of the dimples 10 on one unit.
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公开(公告)号：US09682282B2
公开(公告)日：2017-06-20
申请号：US14981260
申请日：2015-12-28
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Hyoungchol Kim , Masahide Onuki
CPC classification number: A63B37/0006 , A63B37/0007 , A63B37/0008 , A63B37/0009 , A63B37/0012 , A63B37/0018 , A63B37/002 , A63B37/0021 , A63B37/0077 , A63B37/0084 , A63B37/0089 , A63B37/009 , A63B37/0096 , G06T17/20
Abstract: A golf ball 2 has a large number of dimples 8 on a surface thereof. A trajectory of the golf ball 2 is divided into first to fourth segments. An average CD1 of drag coefficients CD and an average CL1 of lift coefficients CL in the first segment are equal to or less than 0.225 and 0.180, respectively. An average CD2 of drag coefficients CD and an average CL2 of lift coefficients CL in the second segment are equal to or less than 0.250 and 0.220, respectively. An average CD3 of drag coefficients CD and an average CL3 of lift coefficients CL in the third segment are equal to or greater than 0.260 and 0.220, respectively. An average CD4 of drag coefficients CD and an average CL4 of lift coefficients CL in the fourth segment are equal to or greater than 0.250 and 0.200, respectively.
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公开(公告)号：US09345931B2
公开(公告)日：2016-05-24
申请号：US14100804
申请日：2013-12-09
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Hyoungchol Kim , Masahide Onuki
CPC classification number: A63B37/0006 , A63B37/0007 , A63B37/0008 , A63B37/0009 , A63B37/0012 , A63B37/0018 , A63B37/002 , A63B37/0021 , A63B37/0077 , A63B37/0084 , A63B37/0089 , A63B37/009 , A63B37/0096 , G06T17/20
Abstract: A golf ball 2 has a large number of dimples 8 on a surface thereof. A trajectory of the golf ball 2 is divided into first to fourth segments. An average CD1 of drag coefficients CD and an average CL1 of lift coefficients CL in the first segment are equal to or less than 0.225 and 0.180, respectively. An average CD2 of drag coefficients CD and an average CL2 of lift coefficients CL in the second segment are equal to or less than 0.250 and 0.220, respectively. An average CD3 of drag coefficients CD and an average CL3 of lift coefficients CL in the third segment are equal to or greater than 0.260 and 0.220, respectively. An average CD4 of drag coefficients CD and an average CL4 of lift coefficients CL in the fourth segment are equal to or greater than 0.250 and 0.200, respectively.
Abstract translation: 高尔夫球2在其表面上具有大量凹坑8。 高尔夫球2的轨迹被分成第一到第四段。 第一段中的阻力系数CD的平均CD1和升力系数CL的平均CL1分别等于或小于0.225和0.180。 阻力系数CD的平均CD2和第二段中的升力系数CL的平均CL2分别等于或小于0.250和0.220。 阻力系数CD的平均值CD3和第三段中的升力系数CL的平均CL3分别等于或大于0.260和0.220。 阻力系数CD的平均值CD4和第四段中的升力系数CL的平均CL4分别等于或大于0.250和0.200。
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公开(公告)号：US09713747B2
公开(公告)日：2017-07-25
申请号：US14444300
申请日：2014-07-28
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Takahiro Sajima , Hyoungchol Kim
IPC: A63B37/00
CPC classification number: A63B37/0021 , A63B37/0004 , A63B37/0006 , A63B37/0007 , A63B37/0012 , A63B37/0018
Abstract: A golf ball has a large number of dimples on a surface thereof. The golf ball meets the following mathematical formula (I): Su≦9.0*So−6.04 (I), Where: So represents a ratio of a sum of spherical surface areas of all the dimples to a surface area of a phantom sphere of the golf ball; and Su represents a standard deviation (mm2) of the spherical surface areas of all the dimples. Preferably, the ratio So is equal to or greater than 0.780. Preferably, the standard deviation Su is equal to or less than 2.150 mm2. Preferably, a number of the dimples is equal to or greater than 300 but equal to or less than 390. Preferably, an average Sa of the spherical surface areas s of all the dimples is equal to or greater than 14.00 mm2.
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