Patent ID: 8992340
Filing Date: 2015-03-31
Classification: A63B

Abstract:
1. A golf ball comprising: an inner core layer; the inner core layer having a first coefficient of restitution, wherein the first coefficient of restitution is approximately 0.8 when the initial velocity is 131 ft/s; an outer core layer enclosing the inner core layer, wherein the outer core layer comprises polybutadiene rubber; the outer core layer having a second coefficient of restitution; the outer core layer having a thickness of at least 4.8 mm; the outer core layer having an outer core layer compression between 2.7 mm and 3.3mm when measured with an initial load of 10 kg and a final load of 130 kg; an inner cover layer enclosing the outer core layer; the inner cover layer having a third coefficient of restitution; and an outer cover layer enclosing the inner cover layer, the outer cover layer comprising thermoplastic polyurethane, wherein the ball as a whole has a ball coefficient of restitution, wherein the ball coefficient of restitution is 0.79 or less when the initial velocity is 131 ft/s, wherein the second coefficient of restitution is greater than the first coefficient of restitution, wherein the second coefficient of restitution is greater than the ball coefficient of restitution, and wherein the first coefficient of restitution is greater than the ball coefficient of restitution.