Patent ID: 7780887
Filing Date: 2010-08-24
Classification: A63B,B29C,B29L

Abstract:
1. A die for molding a golf ball, comprising: two die bodies in which a cavity for molding a golf ball is formed by joining the die bodies to each other; a protrusion formed on the cavity side surface of at least one of the die bodies, the protrusion having a uniform height from the surface or an imaginary spherical surface on which the protrusion is assumed to be absent toward the center of the cavity; and a plurality of dimple forming projections, wherein the protrusion is formed at a position between the plurality of dimple forming projections in order to form a depression which is used for measuring a grinding quantity of a surface of the golf ball, and wherein when a parting line is at latitude zero degree, the protrusion is arranged in the range of from latitude about 10 degrees to latitude about 80 degrees.