Patent ID: 6238306
Filing Date: 2001-05-29
Classification: A63B

Abstract:
A thread-wound golf ball comprising; a wound core composed of a center and a layer of thread rubber wound onto the center, and a cover enclosing said core,said thread rubber layer has a density of 0.65 to 0.9 g/cm.sup.3,said cover being a two layer structure consisting essentially of a cover inner layer and a cover outer layer, said cover outer layer having a lower hardness than said cover inner layer,said cover inner layer has been formed by compression molding and said cover outer layer has been formed by injection molding,said cover inner layer and said cover outer layer have a total thickness of 1.0 to 2.5 mm, andsaid cover inner layer penetrates to the thread rubber layer to a depth of 1.0 to 3.0 mm from the surface of the thread rubber layer.