Patent ID: 9345931
Filing Date: 2016-05-24
CPC Classification: A63B,G06T

Claim Text:
1. A golf ball having a large number of dimples on a surface thereof, wherein when a trajectory that is calculated under conditions of a ball initial speed of 57.4 m/s, a launch angle of 13.8°, and an initial backspin rate of 2450 rpm by a program created according to a manual provided by the USGA using a drag coefficient CD and a lift coefficient CL obtained through an ITR, is divided into a first segment from a launch point to a midpoint between the launch point and a top, a second segment from the midpoint between the launch point and the top to the top, a third segment from the top to a midpoint between the top and a landing point, and a fourth segment from the midpoint between the top and the landing point to the landing point, an average CD an average CL an average CD an average CL an average CD an average CL an average CD an average CL each dimple has a contour shape that is non-circular, and the golf ball satisfies the following mathematical formula: wherein, in the mathematical formula, Rhmax represents a radius variation range of a dimple having a maximum radius variation range Rh, Rhmin represents a radius variation range of a dimple having a minimum radius variation range Rh, R