Multi-piece solid golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorHideo WATANABE
Life of this patent
Estimating the term…
Abstract
Provided is a multi-piece solid golf ball including a core, a surrounding layer, an intermediate layer, and a cover, in which the core is formed of a rubber composition and in a hardness profile of the core, letting a Shore C hardness at a core surface be H100, the Shore C hardnesses at each of an 87.5% outer position, a 75% outer position, a 62.5% outer position, a 50% outer position, a 37.5% outer position, a 25% outer position, and a 12.5% outer position of a core radius from a core center be H87.5, H75, H62.5, H50, H37.5, H25, and H12.5, and the Shore C hardness at the core center be HO, the following two conditions are satisfied: 0 ≤ ( H 6 2.5 - H 50 ) < ( H 100 - H 87.5 ) < ( H 8 7.5 - H 75 ) < ( H 75 - H 62.5 ) ≤ 7. , and ( H 87.5 - H 50 ) / ( H 50 - H 12.5 ) ≥ 3. .
Claims10
A multi-piece solid golf ball comprising a core, a surrounding layer, an intermediate layer, and a cover, wherein the core is formed of a rubber composition, the surrounding layer, the intermediate layer, and the cover are all formed of a resin composition, and in a hardness profile of the core, letting a Shore C hardness at a core surface be H100, a Shore C hardness at a position outside by 87.5% of a core radius from a core center be H87.5, a Shore C hardness at a position outside by 75% of the core radius from the core center be H75, a Shore C hardness at a position outside by 62.5% of the core radius from the core center be H62.5, a Shore C hardness at a position outside by 50% of the core radius from the core center be H50, a Shore C hardness at a position outside by 37.5% of the core radius from the core center be H37.5, a Shore C hardness at a position outside by 25% of the core radius from the core center be H25, a Shore C hardness at a position outside by 12.5% of the core radius from the core center be H12.5, and a Shore C hardness at the core center be H0, the following two conditions are satisfied:
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Dependencies are inferred from the claim text.