Solid golf ball
AssigneeSumitomo Rubber Industries, Ltd.
InventorTakeshi Asakura
Life of this patent
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Abstract
A solid golf ball having good shot fee, high spin amount and excellent durability and having an intermediate layer formed on the core, and a cover covering the intermediate layer, wherein the cover has a Shore D hardness of 40 to 55, the core has a diameter of 31 to 36 mm and a JIS-C hardness of 60 to 85, the intermediate layer has a lower JIS-C hardness than that of the core by 5 to 25, and the average specific gravity of the core and the intermediate layer is within the range of from not less than 1.0 to less than 1.3. The intermediate layer and the core are formed from a vulcanized molded rubber composition comprising a base rubber, a metal salt of an unsaturated carboxylic acid, an organic peroxide and a filler.
Claims3
A solid golf ball comprising a core, an intermediate layer formed on the core, and a cover covering the intermediate layer, wherein the intermediate layer and the core are formed from a vulcanized molded rubber composition comprising a base rubber, a metal salt of an unsaturated carboxylic acid, in an organic peroxide and a filler, and wherein the cover has a Shore D hardness of 40 to 54, the core has a diameter of 31 to 36 mm and a JIS-C hardness of 60 to 85, the intermediate layer has a lower JIS-C hardness than that of the core by 5 to 25, and the average specific gravity of the core and the intermediate layer is within the range of from not less than 1.0 to less than 1.3.
Dependencies are inferred from the claim text.