Multi-piece solid golf ball
AssigneeSumitomo Rubber Industries, Ltd.
InventorKazunari Yoshida
Life of this patent
Estimating the term…
Abstract
The invention provides a multi-piece solid golf ball having improved flight performance, controllability and good shot feel at the time of hitting. The multi-piece solid gold ball has a core having at least one layer, an intermediate layer formed on the core, and a cover covering the intermediate layer. When thickness of the intermediate layer is represented as X (mm) and JIS-C hardness of the intermediate layer is represented as Y, then X is 0.3 to 1.5 mm, X and Y have a correlation represented 10X+55≦Y≦10X+75, and the JIS-C hardness of the cover is 70 to 93.
Claims12
A multi-piece solid golf ball comprising a core having at least one layer, an intermediate layer formed on the core, and a cover covering the intermediate layer, wherein
- assuming that a thickness of the intermediate layer is represented as X (mm) and a hardness in JIS-C hardness of the intermediate layer is represented as Y,
- X is within a range of 0.3 to 1.5 mm,
- X and Y have a correlation represented by the following formula:
- 10X+55≦Y≦10X+75,
- and
- a hardness in JIS-C hardness of the cover is within a range of 70 to 93, and the hardness of the intermediate layer is lower than a surface hardness of the core, and is lower than the hardness of the cover.
A multi-piece solid golf ball comprising a core having at least one layer, an intermediate layer formed on the core, and a cover covering the intermediate layer, wherein
- assuming that a thickness of the intermediate layer is represented as X (mm) and a hardness in JIS-C hardness of the intermediate layer is represented as Y,
- X is within a range of 0.3 to 1.5 mm,
- X and Y have a correlation represented by the following formula:
- 10X+55≦Y≦10X+75,
- and
- a hardness in JIS-C hardness of the cover is within a range of 70 to 93, wherein the core and the intermediate layer are formed from a vulcanized rubber composition.
Dependencies are inferred from the claim text.