GOLF BALL GOLF BALL

摘要

A golf ball dimple, formed on the spherical surface of a golf ball, is polygonal in its surface configuration and has a double slope in its sectional configuration. The gradient of one slope in the vicinity of an edge of the dimple is greater than that of the other slope in the vicinity of the bottom of the dimple so that the dimple has a plane having a large angle with respect to air flow at the periphery of the ball.