Patent ID: 6508723
Filing Date: 2003-01-21
Classification: A63B

Abstract:
A golf ball comprising a cover of a multilayer structure and having a plurality of dimples formed in its surface, characterized in that the sum of dimple trajectory volumes each obtained by multiplying a dimple volume by the square root of a dimple diameter is 580 to 750, and the ball has a diameter of 42.67 to 42.97 mm and at least four types of the dimples which are different in dimple trajectory volumes, andwherein the elevational cross-sectional shape of the dimple at its center has an area S1, multiplying the dimple diameter by a dimple depth gives an area S2 the average of the dimple cross-sectional shape area ratios represented by S1/S2 is 0.61 to 0.68, and at least 80% of the entire dimples have a dimple cross-sectional shape area ratio of from 0.61 to 0.68.