Patent ID: 6676540
Filing Date: 2004-01-13
Classification: A63B

Abstract:
A multi-piece solid golf ball comprising a core consisting of an inner core and an outer core formed on the inner core, and at least one layer of cover covering the core, whereinthe outer core is formed from a rubber composition comprising polybutadiene, a co-crosslinking agent, an organic peroxide and a filler, and has a Shore D hardness of 20 to 40 and a thickness of not less than 0.3 to less than 1.0 mm, the outmost layer of the cover has a Shore D hardness of more than 62 to less than 70, a ratio (HC/HO) of the Shore D hardness of the outmost layer of the cover (HC) to that of the outer core (HO) is more than 2, and assuming that the core has a deformation amount DC (mm) and the golf ball has a deformation amount DB (mm) when applying an initial load of 98 N to a final load of 1275 N, a difference of the deformation amount (DCâˆ’DB) is within the range of 0.8 to 1.6 mm.