Patent ID: 9480882
Filing Date: 2016-11-01
CPC Classification: A63B

Claim Text:
1. A golf ball comprising: a core comprising an inner core having an outer surface and a geometric center; and an outer core layer disposed about the inner core; the outer core layer having an outer surface and comprising a soft transition region adjacent to the outer surface; and an outer cover layer; wherein the soft transition region has a thickness of up to 4 mm, comprises about 5 to 15 percent trans-polybutadiene isomer, and has a negative hardness gradient of up to about 10 Shore C; and wherein the core has an overall positive hardness gradient of about 5 Shore C to 15 Shore C and has a gradient quotient, GQ, defined by the equation: where G is the overall positive hardness gradient in Shore C, T is the percent of trans-polybutadiene isomer at the core outer surface, and COR is the coefficient of restitution measured at an incoming velocity of 125 ft/s.