Patent ID: 8469836
Filing Date: 2013-06-25
Classification: A63B

Abstract:
1. A golf ball comprising: an inner core layer formed from a first diene rubber composition and having a diameter of from 1.000 inches to 1.580 inches, a center hardness of from 40 Shore C to 70 Shore C, and a surface hardness of from 50 Shore C to 85 Shore C; an intermediate core layer formed from a thermosetting polymer composition excluding diene rubber compositions, and having a thickness of from 0.020 inches to 0.070 inches and a surface hardness of 85 Shore C or greater; an outer core layer formed from a second diene rubber composition and having a thickness of from 0.020 inches to 0.050 inches and a surface hardness of 50 Shore C or greater; and a cover layer having a thickness of from 0.010 inches to 0.050 inches and formed from a composition having a material hardness of from 30 Shore D to 65 Shore D; wherein the intermediate core layer composition is a castable composition selected from the group consisting of polyurethanes, polyureas, urethane and urea ionomers, epoxies, polyamides, polyesters, polyurethane and polyurea acrylates, epoxy acrylates, silicones, polyimides, and blends and copolymers of two or more thereof.