Patent ID: 7182700
Filing Date: 2007-02-27
Classification: A63B

Abstract:
1. A golf ball having a core, a mid layer and a cover, wherein said mid layer comprises (1) a matrix of which base material is a rubber or a synthetic resin, and (2) solid particles which are dispersed in said matrix and have a particle size D of equal to or greater than 0.5 mm, the weight percentage of the solid particles in the mid-layer is from 5% by weight or greater to 50% by weight or less of the total weight of the solid particles in the mid-layer and the matrix in the mid-layer, when it is assumed that Shore D hardness of said solid particles be Hg and Shore D hardness of said matrix be Hm, a value (Hg−Hm) is greater than 5, and said particles are absent from said core.