Patent ID: 8911307
Filing Date: 2014-12-16
Classification: A63B

Abstract:
1. A golf ball comprising: an inner core layer, wherein the inner core layer comprises a first highly neutralized polymer with a first flexural modulus, a second highly neutralized polymer with a second flexural modulus, and a low flexural modulus ionomer, and wherein the inner core layer has a diameter between about 24 mm and about 30 mm; an outer core layer, wherein the outer core layer surrounds and encompasses the inner core layer, and wherein the outer core layer comprises a rubber composition; and a cover layer, wherein the cover layer surrounds and encompasses the outer core layer, wherein the first highly neutralized polymer is about 20 to 60 parts by weight of the inner core layer, wherein a ratio of the second flexural modulus to the first flexural modulus is less than about 2, wherein the low flexural modulus ionomer has a flexural modulus of less than about 8,000 psi, wherein the low flexural modulus ionomer is from about 1 to about 50 parts by weight of the inner core layer, wherein the golf ball has a ball compression ranging from about 3.0 mm to about 4.0 mm when measured with an initial load of 10 kg and a final load of 130 kg, wherein the inner core layer has a first surface hardness and the outer core has a second surface hardness, and wherein the first surface hardness is greater than the second surface hardness, wherein the second surface hardness is less than about 50 Shore D, and wherein the cover layer has a third surface hardness, wherein the third surface hardness is less than about 68 Shore D.