Patent ID: 9022883
Filing Date: 2015-05-05
Classification: A63B

Abstract:
1. A multi-piece solid golf ball comprising a solid core encased by a cover of one, two or more layers, wherein, letting (a) represent a JIS-C cross-sectional hardness at a center of the solid core on a cross-section obtained by cutting the core in half, (b) represent a JIS-C cross-sectional hardness at a position 7 mm from the core center, (c) represent a JIS-C cross-sectional hardness at a position 11 mm from the core center, and (d) represent a JIS-C surface hardness of the core: the value (a)−(b) is in the range of 0 to 40, the value (d)−(c) is in the range of 0 to 40, and the value (a)+(b)+(c)+(d) is in the range of 245 to 300, and wherein the ratio between the value (d)−(c) and the value (c)−(b), expressed as [(d)−(c)]/[(c)−(b)], is from 3 to 8.