Patent ID: 6190269
Filing Date: 2001-02-20
Classification: A63B

Abstract:
A multi-piece solid golf ball comprising a center, an intermediate layer formed on the center, and one or more layers of cover covering the intermediate layer, wherein the golf ball has a contact area with a club face of a golf club of 4.5 to 5.5 cm.sup.2 and a ratio of spin amount to launch angle (spin amount/launch angle) of 120 to 220 when hit by a No. 1 wood club at a head speed of 40 m/second, and has a ratio of spin amount/launch angle of 150 to 250 when hit by a No. 5 iron club at a head speed of 34 m/second, wherein the center has a center hardness in JIS-C hardness of not more than 75 and a surface hardness in JIS-C hardness higher than the center hardness, the difference between the surface hardness and the center hardness being less than 10, the intermediate layer has a JIS-C hardness lower than the surface hardness of the center, the difference between the surface harness of the center and the intermediate layer hardness being not less than 10, the intermediate layer has a thickness of 0.5 to 2.0 mm, and the cover has a thickness of 1.5 to 2.5 mm.