Solid golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorsAtsushi Nakamura, Hisashi Yamagishi, Takashi Maruko, Yutaka Masutani
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Abstract
In a solid golf ball of four or multilayer structure comprising a core, an enclosing layer, an intermediate layer, and a cover, the core is comprised primarily of a thermoplastic resin or thermoplastic elastomer and has a diameter of 3-18 mm and a Shore D hardness of 15-50, the enclosing layer is comprised primarily of a thermoplastic resin or thermoplastic elastomer, and the enclosing layer and the intermediate layer have a substantially equal Shore D hardness at a boundary therebetween. The golf ball offers pleasant feel when hit, improved durability, and increased distance.
Claims4
A solid golf ball of multilayer structure comprising a core, an enclosing layer around the core, an intermediate layer around the enclosing layer, and a cover around the intermediate layer, wherein said core is comprised of a thermoplastic resin or thermoplastic elastomer as a base and has a diameter of 3 to 18 mm and a Shore D hardness of 15 to 50, said enclosing layer is comprised of a thermoplastic resin or thermoplastic elastomer as a base, and said enclosing layer and said intermediate layer have a substantially equal Shore D hardness at a boundary therebetween.
Dependencies are inferred from the claim text.