Patent ID: 9623287
Date: 2017-04-18
CPC Classifications: A63B

Claim:
1. A golf ball comprising: an inner core layer having an outer surface and geometric center, the inner core being formed from a first thermoset rubber composition and having a diameter of 0.250 inches to 1.550 inches, wherein the outer surface hardness is 25 Shore C to 95 Shore C and the center hardness is 20 Shore C to 90 Shore C, the inner core having a positive hardness gradient; an intermediate core layer formed from a thermoplastic composition and having a thickness of 0.005 inches to 0.100 inches and a surface hardness of 60 Shore or less, the intermediate core layer having to positive hardness gradient; an outer core layer formed from a second thermoset rubber composition and having a thickness of 0.020 inches to 0.150 inches and an outer surface hardness that is greater than the Shore C outer surface hardness of the inner core layer the outer surface hardness being in the range of range of 30 Shore C to 95 Shore C, the outer core layer having a positive hardness gradient; and a cover layer having a thickness of 0.020 inches to 0.075 inches and a surface hardness of 65 Shore or less; wherein at least one of the center, intermediate core laser, and outer core layer comprises a polyalkenamer rubber composition, the polyalkenamer being present in the composition in an amount of at least 50 weight percent.