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公开(公告)号：US20180140904A1
公开(公告)日：2018-05-24
申请号：US15874628
申请日：2018-01-18
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Kohei MIMURA , Takahiro SAJIMA , Kosuke TACHIBANA
IPC: A63B37/00
CPC classification number: A63B37/0092 , A63B37/0031 , A63B37/0033 , A63B37/0039 , A63B37/0043 , A63B37/0044 , A63B37/0045 , A63B37/0062 , A63B37/0063 , A63B37/0064 , A63B37/0076
Abstract: An object of the present invention is to provide a golf ball traveling a great distance on driver shots. The present invention provides a golf ball comprising a spherical core including an inner layer and an outer layer, an intermediate layer and a cover, wherein a difference (HX+1−HX−1) between a hardness (HX+1) at a point outwardly away in a radial direction from a boundary between the inner layer and the outer layer of the spherical core by 1 mm and a hardness (HX−1) at a point inwardly away in the radial direction from the boundary between the inner layer and the outer layer of the spherical core by 1 mm is 0 or more in Shore C hardness, a surface hardness (HX+Y) of the spherical core is more than 65 in Shore C hardness, an angle α of a hardness gradient of the inner layer is 0° or more, a difference (α−β) between the angle α and an angle β of a hardness gradient of the outer layer is 0° or more, a total thickness of a thickness (Tm) of the intermediate layer and a thickness (Tc) of the cover is 3 mm or less, and the cover has a highest hardness among the constituent members of the golf ball.
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公开(公告)号：US20180036599A1
公开(公告)日：2018-02-08
申请号：US15645144
申请日：2017-07-10
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Hidetaka INOUE , Kazuya KAMINO , Kohei MIMURA , Toshiyuki TARAO , Mami TANAKA
IPC: A63B37/00
CPC classification number: A63B37/0012 , A63B37/0003 , A63B37/0006 , A63B37/0017 , A63B37/0018 , A63B37/0019 , A63B37/002 , A63B37/0021 , A63B37/0022 , A63B37/0038
Abstract: A golf ball 2 includes a main body 4 and a paint film 6. The paint film 6 includes an inner layer 14 and an outer layer 16. A modulus Min of the inner layer 14 is higher than a modulus Mout of the outer layer 16. A difference (Min−Mout) is not less than 25 kgf/cm2. The golf ball 2 has a plurality of dimples 18. A ratio So of a sum of areas of the dimples 18 relative to a surface area of a phantom sphere of the golf ball 2 and a ratio Rs of a number of the dimples 18 each having a diameter of not less than 9.60% and not greater than 10.37% of a diameter of the golf ball 2, relative to a total number of the dimples 18, satisfy the following mathematical formula (1). Rs≧−2.5*So+273 (1)
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公开(公告)号：US20170173402A1
公开(公告)日：2017-06-22
申请号：US15385347
申请日：2016-12-20
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Takahiro SAJIMA , Kohei MIMURA , Kosuke TACHIBANA , Kazuya KAMINO
IPC: A63B37/00
CPC classification number: A63B37/0076 , A63B37/0006 , A63B37/0017 , A63B37/0019 , A63B37/002 , A63B37/0021 , A63B37/0044 , A63B37/0045 , A63B37/0063 , A63B37/0064 , A63B37/0092
Abstract: A golf ball 2 includes an inner core 4, an outer core 6, a mid layer 8, a cover 10, and dimples 12. A diameter D1, a volume V1, a hardness H1o at a central point, a boundary inside hardness H1in, and a hardness difference De1 of the inner core 4; a volume V2 (mm3) and a hardness difference De2 of the outer core 6; a thickness Tm and a hardness Hm of the mid layer 8; and a thickness Tc and a hardness Hc of the cover 10 meet the following mathematical formulas. 1.0
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公开(公告)号：US20180161632A1
公开(公告)日：2018-06-14
申请号：US15714378
申请日：2017-09-25
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Hironori TAKIHARA , Takahiro SAJIMA , Kohei MIMURA
CPC classification number: A63B37/0012 , A63B37/00 , A63B37/0006 , A63B37/0017 , A63B37/0018 , A63B37/0019 , A63B37/0031 , A63B37/0033 , A63B37/0043 , A63B37/0045 , A63B37/0062 , A63B37/0063 , A63B37/0064 , A63B37/0066 , A63B37/0075 , A63B37/0076 , A63B37/008 , A63B37/0083 , A63B37/0092 , A63B45/00
Abstract: A golf ball includes a core, one or more mid layers, a cover, and dimples. A central hardness Ho and a surface hardness Hs of the core, a hardness Hm(min) of a layer having a lowest hardness among the mid layers, and a hardness Hc of the cover satisfy the following mathematical formulas (i) to (iv). Hs−Ho>15 (i) Hc−Hm(min)>20 (ii) −10
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公开(公告)号：US20170182371A1
公开(公告)日：2017-06-29
申请号：US15362208
申请日：2016-11-28
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Kohei MIMURA , Kazuya KAMINO , Kosuke TACHIBANA
IPC: A63B37/00
CPC classification number: A63B37/0076 , A63B37/0004 , A63B37/0017 , A63B37/0018 , A63B37/0019 , A63B37/002 , A63B37/0021 , A63B37/0031 , A63B37/0033 , A63B37/004 , A63B37/0043 , A63B37/0044 , A63B37/0045 , A63B37/006 , A63B37/0062 , A63B37/0063 , A63B37/0064 , A63B37/008 , A63B37/0092
Abstract: A golf ball 2 includes an inner core 4, an outer core 6, a mid layer 8, a cover 10, and dimples 12. A diameter D1, a volume V1, a hardness H1o at a central point, a boundary inside hardness H1in, and a hardness difference De1 of the inner core 4; a volume V2 (mm3) and a hardness difference De2 of the outer core 6; a thickness Tm and a hardness Hm of the mid layer 8; and a thickness Tc and a hardness Hc of the cover 10 meet the following mathematical formulas. 1.0
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Patent Agency Ranking
公开(公告)号：US20150182805A1
公开(公告)日：2015-07-02
申请号：US14583313
申请日：2014-12-26
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Takahiro SAJIMA , Kohei MIMURA
CPC classification number: A63B37/0022 , A63B37/0004 , A63B37/0029 , A63B37/0033 , A63B37/0074 , A63B37/0075 , A63B37/0076 , A63B37/14 , A63B45/00 , A63B45/02 , B05D5/02 , B05D2350/60
Abstract: A golf ball that enhances flight performance is provided. A golf ball according to the present invention includes a spherical core, at least one cover member that covers the core, and a coating layer that covers the cover member configuring the outermost layer. A plurality of dimples are formed in the cover member configuring the outermost layer. The thickness of the coating layer is 5.0 μm or more. Roughness is formed on the surface of the coating layer after coating the cover member configuring the outermost layer. The maximum height Rz and the arithmetic average roughness Ra of the surface of the coating layer satisfy the relationship Rz≧Ra×6.0.
Abstract translation: 提供了一种提高飞行性能的高尔夫球。 根据本发明的高尔夫球包括球形芯，覆盖芯的至少一个盖构件和覆盖构成最外层的盖构件的涂层。 在构成最外层的盖构件中形成多个凹坑。 涂层的厚度为5.0μm以上。 在涂覆构成最外层的覆盖构件之后，在涂层的表面上形成粗糙度。 涂层表面的最大高度Rz和算术平均粗糙度Ra满足Rz≥Ra×6.0的关系。
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公开(公告)号：US20180178072A1
公开(公告)日：2018-06-28
申请号：US15812714
申请日：2017-11-14
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Kohei MIMURA , Toshiyuki TARAO , Hidetaka INOUE
CPC classification number: A63B37/0022 , A63B37/0012 , A63B37/0031 , A63B37/0033 , A63B37/0043 , A63B37/0045 , A63B37/0064 , A63B37/0074 , A63B37/0075 , A63B37/0086 , A63B37/0096 , B29C45/14819 , B29K2009/00 , B29K2075/00 , B29K2995/007 , B29K2995/0082 , B29L2031/546 , B32B25/042 , B32B25/14 , B32B2307/536 , B32B2307/546 , C08J7/042 , C08J2309/00 , C08J2323/08 , C08J2353/00 , C08J2475/08
Abstract: A golf ball 2 includes a core 4, a cover 8 positioned outside the core 4, and a paint film 10 positioned outside the cover 8. The paint film 10 includes an inner layer 12 and an outer layer 14 positioned outside the inner layer 12. A 10% modulus Mo of the outer layer 14 is lower than a 10% modulus Mi of the inner layer 12. A difference (Mi-Mo) between the modulus Mi and the modulus Mo is not less than 25.0 kgf/cm2. The cover 8 has a Shore D hardness Hc of not less than 50 and not greater than 65. The cover 8 has a thickness Tc of not less than 0.80 mm and not greater than 1.80 mm.
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公开(公告)号：US20180028873A1
公开(公告)日：2018-02-01
申请号：US15624328
申请日：2017-06-15
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Hironori TAKIHARA , Takahiro SAJIMA , Kohei MIMURA
IPC: A63B37/00
CPC classification number: A63B37/0092 , A63B37/0006 , A63B37/0012 , A63B37/0017 , A63B37/0019 , A63B37/002 , A63B37/0021 , A63B37/0031 , A63B37/0033 , A63B37/0043 , A63B37/0045 , A63B37/0062 , A63B37/0063 , A63B37/0075 , A63B37/0076 , A63B37/008 , A63B37/0094 , A63B37/0096
Abstract: A golf ball 2 includes a core 4, one or more mid layers 6, a cover 8, and dimples 10. A central hardness Ho and a surface hardness Hs of the core 4, a hardness Hm(min) of a layer having a lowest hardness among the mid layers 6, and a hardness Hc of the cover 8 satisfy the following mathematical formulas (1) to (4). Hs−Ho>15 (1) Hc−Hm(min)>20 (2) −10
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公开(公告)号：US20170368417A1
公开(公告)日：2017-12-28
申请号：US15490285
申请日：2017-04-18
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Kazuya KAMINO , Hidetaka INOUE , Kohei MIMURA
IPC: A63B37/00
CPC classification number: A63B37/0006 , A63B37/0012 , A63B37/0017 , A63B37/0019 , A63B37/0031 , A63B37/0033 , A63B37/0043 , A63B37/0045 , A63B37/0075 , A63B37/0076 , A63B37/0092
Abstract: A golf ball 2 includes a core 4, a mid layer 6, a cover 8, and dimples 10. A difference DH in hardness between a surface and a central point of the core 4, a thickness Tm and a hardness Hm of the mid layer 6, a thickness Tc and a hardness Hc of the cover 8, and an amount of compressive deformation Sb meet the following mathematical formulas. (DH*Hm)/(Hc*Tc)>80 ((Sb*Tc)/(Hc* Hm*Tm))*1000>0.75 An area ratio So of dimples 10 and a ratio Rs of a number of the dimples 10 each having a diameter of equal to or greater than 9.60% but equal to or less than 10.37% of a diameter of the golf ball 2 meet the following mathematical formula (3). Rs≧−2.5*So+273 (3)
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公开(公告)号：US20160263442A1
公开(公告)日：2016-09-15
申请号：US15163022
申请日：2016-05-24
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Takahiro SAJIMA , Kohei MIMURA
CPC classification number: A63B37/0022 , A63B37/0004 , A63B37/0015 , A63B37/0029 , A63B37/0033 , A63B37/0074 , A63B37/0075 , A63B37/0076 , A63B37/14 , A63B45/00 , A63B45/02 , B05D5/02 , B05D2350/60
Abstract: A golf ball that enhances flight performance is provided. A golf ball according to the present invention includes a spherical core, at least one cover member that covers the core, and a coating layer that covers the cover member configuring the outermost layer. A plurality of dimples are formed in the cover member configuring the outermost layer. The thickness of the coating layer is 5.0 μm or more. Roughness is formed on the surface of the coating layer after coating the cover member configuring the outermost layer. The maximum height Rz and the arithmetic average roughness Ra of the surface of the coating layer satisfy the relationship Rz≧Ra×6.0.
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