Patent ID: 7445565
Filing Date: 2008-11-04
Classification: A63B

Abstract:
1. A multi-piece solid golf ball comprising a rubber-based core encased by, in order, an intermediate layer and a cover, wherein the core contains from 0.05 to 0.5 part by weight of sulfur per 100 parts by weight of the rubber base, has a hardness difference between a surface and a center of the core, expressed in JIS-C hardness units, of at least 21 but not more than 30, and has a diameter of from 36 to 40 mm, the surface hardness of the core is at least 75 but not more than 90 as expressed in JIS-C hardness units; the intermediate layer has a Shore D hardness of at least 47 but not more than 60, and a thickness of from 0.5 to 2.0 mm; the cover has a Shore D hardness of at least 53 but not more than 59, and a thickness of from 0.6 to 1.5 mm; and the intermediate layer and cover satisfy the following condition: