Patent ID: 7674191

Claim:
A golf ball comprising: a solid core formed from materials comprising at least one polybutadiene and an ethylenically unsaturated carboxylic acid selected from the group consisting of zinc diacrylate, zinc acrylate and zinc methacrylate, the solid core having a coefficient of restitution of 0.770 or more, a mass ranging from 30 grams to 40 grams, and having a diameter of 1.2 inches to 1.6 inches; an inner cover layer molded on the solid core, the inner cover layer having a thickness ranging from 0.03 inch to 0.07 inch, and comprising a metal fatty acid salt and a blend of ionomers, the blend of ionomers having at least one ionomer with an acid content by weight of 17% to 25%, and 10% to 100% neutralization of the acids by metal ions selected from the group consisting of zinc, sodium and magnesium, the solid core and inner cover layer forming an inner ball having a coefficient of restitution of 0.790 or more, and a diameter of 1.48 inches to 1.66 inches; and an outer cover layer molded about the inner ball, the outer cover layer comprising at least one ionomer material, the outer cover layer having a thickness ranging from 0.03 inch to 0.06 inch; wherein the golf ball has a coefficient of restitution of at least 0.770, a dimple pattern having at least 65% or more surface coverage, and a diameter of 1.680 inches or more.