Golf ball with an outer core having a high coefficient of restitution

摘要

A high performance golf ball includes a resin inner core, a rubber outer core, and a cover. The resin inner core is made of highly neutralized polymer, and may include a blend of different highly neutralized polymers. The cover is a two layer cover, with a hard inner cover and a thermoplastic polyurethane outer cover. The ball as a whole has properties to maximize performance and aesthetic properties, such as feel and sound.

主权项

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.