Patent ID: 6142885
Filing Date: 2000-11-07
Classification: A63B

Abstract:
A thread-wound golf ball comprising; a thread-wound core having a center and a layer of rubber thread wound about the center, and a cover enclosing the thread-wound core, said cover having a two-layer construction comprising an inner cover layer and an outer cover layer, said outer cover layer having a greater hardness than that of the inner cover layer, whereinthe outer cover layer has a Shore D hardness in the range of 55 to 65,the inner cover layer and the outer cover layer have a combined thickness in the range of 2.0 to 5.0 mm,the rubber thread layer has a thickness in the range of 1.0 to 2.5 mm,the center has a diameter in the range of 29 to 37 mm, andthe rubber thread layer is impregnated with an emulsion containing ionomer or urethane resin solids, followed by drying, and said inner cover layer injection molded over the rubber thread layer.