US 2026/0077243 A1Published application

Golf ball

AssigneeBridgestone Sports Co., Ltd.

InventorsHideo WATANABE, Akira Kimura, Hirotaka Shinohara, Yuki Mizuno

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Abstract

Provided is a golf ball including a single-layer core and a cover, wherein the core has a hardness profile in which, letting a Shore C hardness of a core surface be H100, Shore C hardnesses 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, respectively, and a Shore C hardness of the core center be H0, the following two conditions are satisfied: 0 ≤ ( H 62.5 - H ⁢ 50 ) < ( H ⁢ 100 - H 87.5 ) < ( H 87.5 - H ⁢ 75 ) < ( H ⁢ 75 - H 62.5 ) ≤ 7. , and ( H 87.5 - H ⁢ 50 ) / ( H ⁢ 50 - H 12.5 ) ≥ 3 . 0 .

Claims15

Dependent claims

A golf ball comprising a single-layer core and a cover, wherein the core has a hardness profile in which, letting a Shore C hardness of a surface of the core 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:

0
≤
(
H
62.5
-
H
⁢
50
)
<
(
H
⁢
100
-
H
87.5
)
<
(
H
87.5
-
H
⁢
75
)
<
(
H
⁢
75
-
H
62.5
)
≤
7.
and
(
H
87.5
-
H
⁢
50
)
/
(
H
⁢
50
-
H
⁢
1
2.5
)
≥
3
.
0
.

61 more elements

Dependencies are inferred from the claim text.