Three-piece solid golf ball
First Claim
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1. A three-piece solid golf ball comprising:
- a center core, an intermediate layer, and a cover enclosing the said center core through the intermediate layer,said center core having a diameter of at least 29 mm and a specific gravity of less than 1.4,said intermediate layer having a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale, the specific gravity of said intermediate layer being lower than the specific gravity of said center core, andsaid cover having a thickness of 1 to 3 mm and being softer than said intermediate layer, wherein said center core has a hardness between about 45 to 80 on the JIS C scale.
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Abstract
A three-piece solid golf ball comprising a center core, an intermediate layer, and a cover. The center core (1) has a diameter of at least 29 mm, a hardness in the range of 45-80 JIS C and a specific gravity of less than 1.4. The intermediate layer (2) has a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale. The cover (3) has a thickness of 1-3 mm and a hardness of 50-85 JIS C. The ball has a good total balance of properties in that feeling and controllability are improved at no sacrifice of flying performance and durability.
90 Citations
167 Claims
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1. A three-piece solid golf ball comprising:
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a center core, an intermediate layer, and a cover enclosing the said center core through the intermediate layer, said center core having a diameter of at least 29 mm and a specific gravity of less than 1.4, said intermediate layer having a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale, the specific gravity of said intermediate layer being lower than the specific gravity of said center core, and said cover having a thickness of 1 to 3 mm and being softer than said intermediate layer, wherein said center core has a hardness between about 45 to 80 on the JIS C scale. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A three-piece solid golf ball, comprising:
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a center core, an intermediate layer, and a cover enclosing said center core through the intermediate layer; said center core having a diameter of at least 29 mm and a specific gravity of less than 1.4; said intermediate layer formed of an ionomer resin and having a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale, the specific gravity of said intermediate layer being lower than the specific gravity of said center core; and
said cover having a thickness of 1 to 3 mm and being softer than said intermediate layer,wherein said center core has a hardness between about 45 to 80 on the JIS C scale. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124)
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125. A three-piece solid golf ball comprising:
- a center core, an intermediate layer, and a cover enclosing said center core through the intermediate layer, said center core having a diameter of at least 29 mm and a specific gravity of less than 1.4, said intermediate layer having a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale, the specific gravity of said intermediate layer being lower than the specific gravity of said center core, and said cover having a thickness of 1 to 3 mm and being softer than said intermediate layer, wherein said center core has a hardness between about 60 to 80 on the JIS C scale.
- View Dependent Claims (126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165)
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166. A three-piece solid golf ball, comprising:
- a center core, an intermediate layer, and a cover enclosing said center core through the intermediate layer;
said center core made from a rubber-based composition and having a diameter of at least 29 mm and a specific gravity of less than 1.4;said intermediate layer having a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale, the specific gravity of said intermediate layer being lower than the specific gravity of said center core; and
said cover having a thickness of 1 to 3 mm and being softer than said intermediate layer, wherein said center core comprises polybutadiene rubber;wherein said intermediate layer comprises a blend of ionomer resins;
wherein said cover comprises a blend of ionomer resins;
wherein said center core has a diameter between about 29 mm and 37 mm;
wherein said center core has a hardness between about 45 to 80 on the JIS C scale;
wherein said intermediate layer has a hardness between about 85 and 100 on the JIS C scale;
wherein said cover has a hardness between about 50 and 85 on the JIS C scale;
wherein said center core has a specific gravity between about 1.05 and 1.38;
wherein said intermediate layer has a thickness between about 1.5 mm and 3.5 mm; and
wherein said cover has a thickness less than about 2.5 mm.
- a center core, an intermediate layer, and a cover enclosing said center core through the intermediate layer;
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167. A three-piece solid golf ball, comprising:
a center core, an intermediate layer, and a cover enclosing said center core through the intermediate layer;
said center core having a diameter of at least 29 mm and a specific gravity of less than 1.4;
said intermediate layer having a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale, the specific gravity of said intermediate layer being lower than the specific gravity of said center core; and
said cover made from a thermoplastic composition and having a thickness of 1 to 3 mm and being softer than said intermediate layer, wherein said center core comprises cis-1,4 polybutadiene rubber;
wherein said intermediate layer comprises a blend of low acid ionomer resins;
wherein said center core has a diameter between about 29 mm and 37 mm;
wherein said center core plus intermediate layer has a diameter between about 38 mm and 41 mm;
wherein said center core has a hardness between about 60 to 80 on the JIS C scale;
wherein said intermediate layer has a hardness between about 85 and 100 on the JIS C scale;
wherein said cover has a hardness between about 60 and 85 on the JIS C scale;
wherein said center core has a specific gravity between about 1.05 and 1.38;
wherein a difference between a specific gravity of said center core and a specific gravity of said intermediate is between about 0.1 and 0.5;
wherein said intermediate layer has a thickness between about 1.5 mm and 3.5 mm; and
wherein said cover has a thickness less than about 2.5 mm.
Specification