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公开(公告)号：GB2144043A
公开(公告)日：1985-02-27
申请号：GB8416950
申请日：1984-07-03
Applicant: SUMITOMO RUBBER IND
Inventor： YAMADA MIKIO
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公开(公告)号：GB2127304A
公开(公告)日：1984-04-11
申请号：GB8324189
申请日：1983-09-09
Applicant: SUMITOMO RUBBER IND
Inventor： YAMADA MIKIO
Abstract: A large-sized (1.68 inches) two piece solid golf ball superior in flight distance, comprising a solid core and a cover having a thickness of 2.10 to 2.30 mm. and a Shore D hardness of not less than 65, the total volume of dimples being from 330 to 365 mm3.
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公开(公告)号：GB2127303A
公开(公告)日：1984-04-11
申请号：GB8324186
申请日：1983-09-09
Applicant: SUMITOMO RUBBER IND
Inventor： YAMADA MIKIO
Abstract: A two piece solid golf ball having a high impact resilience and an excellent durability, comprising a solid core and a cover, said solid core having a particular hardness distribution such that the hardnesses measured by a JIS-C hardness tester are from 72 to 78 at the surface, from 77 to 83 at the position "A", 5 mm. apart from the surface, from 72 to 80 at the position "B", 10 mm. apart from the surface, from 67 to 75 at the position "C", 15 mm. apart from the surface, and not more than 75 at the residual center portion.
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公开(公告)号：GB2305132B
公开(公告)日：1999-06-16
申请号：GB9619154
申请日：1996-09-13
Applicant: SUMITOMO RUBBER IND
Inventor： YOKOTA MASATOSHI , MORIYAMA KEIJI , YAMADA MIKIO
IPC: A63B37/00 , A63B37/02 , A63B37/04 , A63B37/12 , B29D99/00 , B29K9/00 , C08K5/04 , C08K5/09 , C08L9/00
Abstract: A solid golf ball having good controllability and long flight distance which utilizes a solid core and a cover covering the core, wherein the core is formed from a rubber composition comprising a polybutadiene rubber having a cis-1,4-structure content of at least 40% and either an unsaturated carboxylic acid or a metal salt thereof or both, and the cover has a thickness of 1 to 4 mm, a Shore D hardness of 55 to 64 and has 300 to 450 dimples having a diameter of 2 to 5 mm, with the dimples having a dimple area proportion of 62 to 78% and a total dimple volume of 260 to 345 mm3.
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公开(公告)号：DE69410951D1
公开(公告)日：1998-07-16
申请号：DE69410951
申请日：1994-11-23
Applicant: SUMITOMO RUBBER IND
Inventor： MORIYAMA KEIJI , ENDO SEIICHIRO , YAMADA MIKIO
Abstract: In a golf ball (1) according to the present invention, dimples (2) formed on the surface thereof have the same diameter and are classified into first group dimples (2-I) and second group dimples (2-II) depending on the depth thereof. The depth of the first group dimple (2-I) is from 130% to 280% of that of the second group dimple (2-II). Further, the number of the first group dimples (2-I) is from 20% to 80% of the total number of the dimples.
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Patent Agency Ranking
公开(公告)号：GB2292387B
公开(公告)日：1998-04-15
申请号：GB9516996
申请日：1995-08-18
Applicant: SUMITOMO RUBBER IND
Inventor： YAMADA MIKIO , MORIYAMA KEIJI
Abstract: The present invention provides a golf ball which exhibits a soft hit feeling and a high impact resilience. The golf ball comprises a core made of an elastomer and a cover covering said core wherein said cover is made of a thermoplastic material comprising a rubber powder and a thermoplastic elastomer, said rubber powder being present in an amount of 5 to 40 parts by weight based on 100 parts by weight of said thermoplastic elastomer.
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公开(公告)号：AU688862B2
公开(公告)日：1998-03-19
申请号：AU1760395
申请日：1995-04-24
Applicant: SUMITOMO RUBBER IND
Inventor： YOKOTA MASATOSHI , HORIUCHI KUNIYASU , HIRAOKA HIDENORI , YAMADA MIKIO
Abstract: A two-piece golf ball, comprising: a core having a surface hardness of 55 to 75 and a sectional hardness at the location other than the core surface layer of 65 to 88, said hardness value being determined by a JIS-C type hardness tester; and a cover covering said core and having a stiffness of 1,000 to 3,000 kg/cm2; wherein said golf ball exhibits a contact area S between itself and a clubface, when hit with a driver at a head speed of 40 m/second, of 4.3 to 5.0 cm2, S being determined by the equation: S= pi (+E,fra 1/2+EE {(a+b)/2})2 wherein a is a transverse diameter of the contact area and b is a longitudinal diameter of the contact area.
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公开(公告)号：GB2287423B
公开(公告)日：1997-11-12
申请号：GB9505451
申请日：1995-03-17
Applicant: SUMITOMO RUBBER IND
Inventor： YAMADA MIKIO , YABUKI YOSHIKAZU
Abstract: A method for grinding a surface of a golf ball and removing the thin outer layer thereof, wherein grinding tools arranged on three axes on a plane which axes radiate from a definite point at intervals of 120 DEG between one another are used. Each of the grinding tools possesses a circular grinding face which gradually spreads toward the end and contacts a surface of a golf ball. The grinding tools turn on the respective axes toward the same direction at the same speed keeping the same distance from the definite point.
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公开(公告)号：AU677082B2
公开(公告)日：1997-04-10
申请号：AU7144994
申请日：1994-08-25
Applicant: SUMITOMO RUBBER IND
Inventor： YAMADA MIKIO , HORIUCHI KUNIYASU , KITAOH KATSUTOSHI
IPC: A63B37/00 , A63B37/14 , C09D7/12 , C09D5/00 , C09D175/04
Abstract: Disclosed is a clear paint for a golf ball to be coated on the surface of the golf ball, which comprises 100 parts by weight (solid) of a clear paint resin, 0.01 to 2 parts by weight of a fluorescent brightener and 0.001 to 0.5 parts by weight of a blue pigment. A golf ball, the surface of which is coated with the clear paint is also disclosed.
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公开(公告)号：GB2293385A
公开(公告)日：1996-03-27
申请号：GB9519122
申请日：1995-09-19
Applicant: SUMITOMO RUBBER IND
Inventor： YAMADA MIKIO , SUGIMOTO KAZUSHIGE
Abstract: A thread wound golf ball is described with high impact resilience having liquid center wherein a center bag is filled with a liquid, thereby improving the ball's flight distance, while maintaining a good shot feel and control properties. The center bag of the liquid center is made of a crosslinked rubber obtained from a rubber composition comprising: (a) a rubber component containing a mixture of 10 to 80% by weight of cis-1,4-polybutadiene and 90 to 20% by weight of a natural rubber or cis-isoprene rubber as a base rubber (b) either a metal salt of an unsaturated carboxylic acid selected from acrylic acid or methacrylic acid, or a combination of the unsaturated carboxylic acid and metal oxide forming a metal salt with the unsaturated carboxylic acid, and (c) a peroxide crosslinking agent, the component (b) being present in an amount 3 to 20 parts by weight based on 100 parts by weight of the component (a) when calculated in terms of the amount of the unsaturated carboxylic acid.
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