Golf ball with polygonal dimple groupings
View Patent ↗The present invention concerns a golf ball having dimple groupings comprised of multiple angular spiral shaped arms that are arrayed to form polygonal perimeters, wherein the number of arms equals the number of perimeter sides. This allows greater symmetry about the dimple grouping center, thereby improving the consistency of the aerodynamic performance of the ball. In another unique feature of the present invention, the angular shape of the arms facilitates the formation of polygonal shaped dimple groupings, which can fit closely together to cover a greater proportion of the ball's surface, preferably more than about 85% surface coverage, thereby further enhancing aerodynamic performance.
1. A golf ball comprising:
a generally spherical surface; and
a plurality of dimple groupings formed on the surface;
wherein at least one dimple grouping comprises a generally polygonal perimeter comprising n 1 sides and a plurality of angular arms n 2 ,
wherein each angular arm comprises at least one generally straight segment and at least one relatively sharp corner,
wherein n 1 equals n 2 ,
wherein the plurality of dimple groupings is arranged in an icosidodecahedron pattern comprising twenty triangles and twelve pentagons, and
wherein each of the twenty triangles comprises three angular arms comprising two relatively straight segments and one relatively sharp corner, and wherein each of the twelve pentagons comprises five angular arms comprising five relatively straight segments and four relatively sharp corners.
2. The golf ball of claim 1 , wherein the dimple groupings cover more than about 85% of the spherical surface.