Golf ball
AssigneeSumitomo Rubber Industries, Ltd.
InventorsToshiyuki TAKUBO, Takahiro SAJIMA
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Abstract
A golf ball has a plurality of dimples on a surface thereof. Each dimple has a center portion and an edge portion. The center portion has a bowl shape. The edge portion has a ring shape and is smoothly continuous with the center portion. A cross-sectional shape of the edge portion is a curved line that is convex outward in a radial direction of the golf ball. A sum Vc of volumes of the center portions and a sum Vd of volumes of the dimples satisfy the following mathematical formula: (Vd−Vc)/Vc≤2.15. A ratio of a number of the dimples, the center portion of each dimple having a circular contour and the edge portion of each dimple having a non-circular contour, to a total number of the dimples, is not less than 50%.
Claims3
A golf ball having a plurality of dimples on a surface thereof, wherein each dimple has a center portion having a bowl shape, and an edge portion smoothly continuous with the center portion and having a ring shape,
- wherein a cross-sectional shape of the edge portion is a curved line that is convex outward in a radial direction of the golf ball, and
- wherein a sum Vc of volumes of the center portions and a sum Vd of volumes of the dimples satisfy the following mathematical formula:
- (Vd−Vc)/Vc≤2.15.
Dependencies are inferred from the claim text.