Invention Application
US20150375058A1 GOLF BALL 有权
高尔夫球

GOLF BALL
Abstract:
A golf ball 2 includes a core 4, a mid layer 6, a cover 8 and a paint layer 10. The core 4 includes a center 12 and an envelope layer 14. The golf ball 2 satisfies the following mathematical formulas. In the mathematical formulas, Tm represents a thickness of the mid layer, Tcmin represents a minimum thickness of the cover, Tcmax represents a maximum thickness of the cover, and Tp represents a thickness of the paint layer. The golf ball 2 has a large number of dimples 16 on a surface thereof. The number of planes that can divide a pattern of the dimples so that divided patterns are mirror symmetry to each other is one. Tm>Tcmax≧Tcmin>Tp (Tcmas−Tcmin)≦0.15 mm 0.15≧(Tp/Tcmin)≦0.04
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