Patent ID: 6135899
Filing Date: 2000-10-24
Classification: A63B

Abstract:
A thread-wound golf ball comprising; a center ball, a layer of rubber thread wound about the center ball, and a cover enclosing the rubber thread layer, said center ball having a two-layer construction comprising an inner layer and an outer layer,the center ball has a diameter of 30 to 36 mm and a weight of 19.5 to 31.5 g,the outer layer of the center ball has a specific gravity of 1.0 to 1.2, a Shore D hardness at least 5 units lower than the inner layer, and a thickness of 1 to 6 mm and a Shore D hardness of 20 to 45,the inner layer of the center ball has a Shore D hardness of 35 to 60, andthe cover has a thickness of 1 to 3 mm.