Multi-piece solid golf ball

Abstract

A three piece solid golf ball having improved rebound characteristics and a higher initial velocity which includes a center portion, an outer layer disposed over the center portion, and a cover disposed over the outer layer. The outer layer is formed from a rubber composition containing a base rubber, and has a base rubber volume content ratio of at least 0.65. The rubber composition of the outer layer further contains a gravity filler with a high specific gravity such that the outer layer has a higher specific gravity than the center, wherein the difference in specific gravity between the outer layer and the center varies from 0.15 to 0.8 for a small size golf ball and from 0.15 to 0.45 for a large size golf ball. The gravity filler may be selected from tungsten, tungsten carbide, molybdenum, lead, lead dioxide, nickel, or copper.

Dependencies are inferred from the claim text.