Patent ID: 6406383
Filing Date: 2002-06-18
Classification: A63B

Abstract:
A multi-piece golf ball comprising:a center core having a JIS-C hardness of 55 to 65; a cover having a JIS-C hardness of 87 to 94; a core enclosing layer which directly encloses said center core and has a JIS-C hardness in the range of 30 to 45; and a r.d. preventing layer which prevents a restitution coefficient degradation, the r.d. preventing layer being internally disposed in direct contact with said cover and having a JIS-C hardness greater than the others and not less than 97, wherein the core enclosing layer has a JIS-C hardness lower than the JIS-C hardness of the center core, the cover, and the r.d. preventing layer.