Patent ID: 9320944
Filing Date: 2016-04-26
CPC Classification: A63B,B32B,C08G,C08L

Claim Text:
1. A golf ball comprising: an inner core layer having an outer surface and a geometric center and being formed from a substantially homogenous rubber composition; an outer core layer disposed about the inner core layer to form a dual core; an inner cover layer disposed about the dual core, the inner cover comprising a high-acid ionomer and having a material hardness of about 66 to 75 Shore D, the high-acid ionomer having an acid content of about 16% or greater; and an outer cover layer disposed about the inner cover layer, the outer cover comprising a polyurethane and having a material hardness of about 38 Shore D to about 56 Shore D; wherein the inner core surface hardness is greater than the geometric center hardness by about 1 to 10 Shore C to define a shallow positive hardness gradient; and wherein the dual core surface hardness is at least about 85 Shore C.