Multi-piece solid golf ball
AssigneeSumitomo Rubber Industries, Ltd.
InventorTakashi Sasaki
Life of this patent
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Abstract
The present invention provides a multi-piece solid golf ball, which is superior in flight distance, spin performance, shot feel and scuff resistance. The present invention relates to a multi-piece solid golf ball comprising a core consisting of a center and an intermediate layer, and a cover covering the core, wherein the center has a diameter of 37 to 41 mm, the intermediate layer has a thickness of 0.5 to 2.0 mm and a hardness in Shore D hardness of 55 to 70, the hardness of the intermediate layer is higher than a surface hardness in Shore D hardness of the center and a hardness in Shore D hardness of the cover, and a specific gravity of the intermediate layer is lower than that of the center and cover, the cover comprises polyurethane-based thermoplastic elastomer as a main component, and has a thickness of 0.3 to 1.0 mm.
Claims10
A multi-piece solid golf ball comprising a core consisting of a center and an intermediate layer formed on the center, and a cover covering the core, wherein
- the center has a diameter of 37 to 41 mm,
- the intermediate layer has a thickness of 0.5 to 2.0 mm and a hardness in Shore D hardness of 55 to 70, the hardness of the intermediate layer is higher than a surface hardness in Shore D hardness of the center and a hardness in Shore D hardness of the cover, and a specific gravity of the intermediate layer is lower than that of the center by 0.05 to 0.3 and is lower than that of the cover by 0.05 to 0.3, and
- the cover comprises polyurethane-based thermoplastic elastomer as a main component, and has a thickness of 0.3 to 1.0 mm.
Dependencies are inferred from the claim text.