MULTI-CORE GOLF BALL HAVING INCREASED INITIAL VELOCITY

摘要

The present invention relates to a golf ball (300) comprising: an inner core (310), the inner core (310) consisting essentially of at least one highly neutralized polymer; an outer core layer (320), the outer core layer (320) substantially surrounding the inner core (310) and being made primarily of a thermoset rubber; an inner cover layer (330), the inner cover layer (330) substantially surrounding the outer core layer (320); and an outer cover layer (340), the outer cover layer (340) substantially surrounding the inner cover layer (330); wherein the golf ball (300) has an initial velocity measured at a club head speed of about 125 mph of at least about 174 mph, wherein the inner core (310) has a surface Shore D hardness of at least about 60; the outer core layer (320) has a surface Shore D hardness of from about 50 to about 60; the inner cover layer (330) has a surface Shore D hardness of at least 60; and the outer cover layer (340) has a surface Shore D hardness of from about 50 to about 60. It is an object of the present invention to provide a golf ball that is usable for both professional and hobby golfers and thus for a high range of club speeds.