Golf ball
AssigneeSumitomo Rubber Industries, Ltd.
InventorsTakahiro SAJIMA, Daijiro KOJIMA
Life of this patent
Estimating the term…
Abstract
A golf ball 2 includes a core 4, a mid layer 6, and a cover 8. A Shore C hardness Ms at a surface of a sphere 14 consisting of the core 4 and the mid layer 6 is equal to or greater than a Shore C hardness Cs at a surface of the core 4. The hardness Cs is equal to or greater than a Shore C hardness Bs at a surface of the golf ball 2. A value V1 calculated by the following mathematical formula is 9.15 or more and 10.85 or less. V1=(Cc/Cd)*Cs, where Cc represents an amount of compressive deformation (mm) of the core 4 measured under conditions where an initial load is 98 N and a final load is 1274 N, and Cd represents a diameter (mm) of the core 4.
Claims5
A golf ball comprising a core, a mid layer positioned outside the core, and a cover positioned outside the mid layer, wherein
- a Shore C hardness Ms at a surface of a sphere consisting of the core and the mid layer is equal to or greater than a Shore C hardness Cs at a surface of the core,
- the hardness Cs is equal to or greater than a Shore C hardness Bs at a surface of the golf ball, and
- a value V1 calculated by the following mathematical formula is 9.15 or more and 10.85 or less,
- V
-
- 1
- =
- (
- Cc
- /
- Cd
- )
- *
- Cs
- ,
- where Cc represents an amount of compressive deformation (mm) of the core measured under conditions where an initial load is 98 N and a final load is 1274 N, and Cd represents a diameter (mm) of the core.
Dependencies are inferred from the claim text.