Patent ID: 6379266
Filing Date: 2002-04-30
Classification: A63B

Abstract:
A golf ball comprising:a hollow core having a diameter ranging from 1.30 inches to 1.50 inches; a boundary layer covering the core, the boundary layer formed from a blend of ionomer materials consisting of 40, 45, or 50 parts of an ionomer resin composed of sodium neutralized ethylene/methacrylic acid, 40, 45or 50 parts of an ionomer resin composed of a zinc neutralized ethylene/methacrylic acid, and 0,10, or 20 parts of an ionomer resin composed of a terpolymer of ethylene, methacrylic acid and n-butyl acrylate partially neutralized with magnesium, having a Shore D hardness between 58 to 65 and a thickness in the range of 0.0525 inch to 0.58 inch; a wound layer covering the boundary layer, the wound layer having a thickness of 0.06 inch to 0.150 inch; and a cover comprising a thermoset polyurethane material covering the wound layer, the cover having a thickness ranging from 0.030 inch to 0.0375 inch.