Patent ID: 8852026

Claim:
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 from 1.250 inches to 1.600 inches, wherein the outer surface hardness is 20 Shore C to 85 Shore C and the center hardness is 40 Shore C to 65 Shore C; 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 25 Shore C to 85 Shore C; an outer core layer formed from a second thermoset rubber composition and having a thickness of 0.010 inches to 0.100 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 45 Shore C to 90 Shore C; and a cover layer having a thickness of from 0.010 inches to 0.050 inches and a surface hardness of 60 Shore C or greater; wherein at least one of the center, intermediate core layer, 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.