Patent ID: 6736737
Filing Date: 2004-05-18
Classification: A63B

Abstract:
A multi-piece solid golf ball comprising a rubbery elastic solid core and a resin cover enclosing the solid core, said cover comprising at least three layers including an inner layer disposed adjacent to the solid core, an outer layer disposed radially outside the inner layer and provided on its outer surface with a multiplicity of dimples, and an intermediate layer between the inner layer and the outer layer, whereinsaid solid core has a hardness corresponding to a deflection of at least 1.6 mm under an applied load of 294 N (30 kgf), said cover inner layer has a Shore D hardness of at least 55, said cover outer layer has a Shore D hardness of 40 to 55, said cover intermediate layer has a Shore D hardness X of 8 to 50 and a gage Y of 0.1 mm to 0.9 mm, wherein X and Y satisfy the relationship: X/Y&gE;35, and said Shore D hardness of the cover layers is in the order of inner layer> outer layer>intermediate layer, wherein the dimples are composed of a combination of 4 to 10 types of dimples having different values of a dimple trajectory volume VT, which is given as the volume of a dimple multiplied by the square root of a dimple diameter, and the sum of dimple trajectory volumes TVT is in the range of 530 to 750.