Patent ID: 7056232

Claim:
A multi-piece solid golf ball consisting of a solid core of one layer, an intermediate layer enclosing the solid core, and a cover enclosing the intermediate layer, wherein the cover is formed of thermoplastic urethane resins, said intermediate layer has a gage G 1 of 0.8 to 1.5 mm and a Shore D hardness of 53 to 65, said cover has a gage G 2 of 0.5 to 1.3 mm and a Shore D hardness of 37 to 53, which is softer than said intermediate layer, and the gage G 1 of said intermediate layer and the gage G 2 of said cover satisfy 67.9%≧[G 1 /(G 1 +G 2 )]×100≧51.7%, and wherein said solid core, a spherical body obtained by enclosing the core with the intermediate layer and a spherical body obtained by enclosing the intermediate layer with the cover undergo a deflection of 3 to 4.5 mm, 2.8 to 6.0 mm and 2.5 to 4.0 mm under an applied load of 100 kg, respectively, and provided that the deflection of the solid core is μ 1 , the deflection of the spherical body obtained by enclosing the core with the intermediate layer is μ 2 and the deflection of the spherical body obtained by enclosing the intermediate layer with the cover is μ 3 , these deflections are satisfied as a following relationship; μ 1 >μ 2 >μ 3 .