Dimple patterns for golf balls
The present invention provides a method for arranging dimples on a golf ball surface in which the dimples are arranged in a pattern derived from at least one irregular domain generated from a regular or non-regular polyhedron. The method includes choosing control points of a polyhedron, generating an irregular domain based on those control points, packing the irregular domain with dimples, and tessellating the irregular domain to cover the surface of the golf ball. The control points include the center of a polyhedral face, a vertex of the polyhedron, a midpoint or other point on an edge of the polyhedron and others. The method ensures that the symmetry of the underlying polyhedron is preserved while minimizing or eliminating great circles due to parting lines.
1. A golf ball having an outer surface comprising a plurality of dimples disposed thereon, wherein the dimples are arranged in multiple copies of a first domain and a second domain, the first domain and the second domain being tessellated to cover the outer surface of the golf ball in a uniform pattern having no great circles and consisting of eight first domains and six second domains, and wherein:
the first domain has three-way rotational symmetry about the central point of the first domain;
the second domain has four-way rotational symmetry about the central point of the second domain;
the first domain includes a center dimple having a center that is coincident with the central point of the first domain; and
the dimples of the first domain, other than the center dimple, are arranged along the sides of at least two reference triangles, wherein the reference triangles are concentric triangles having a common center that is coincident with the central point of the first domain.
2. The golf ball of claim 1 , wherein the maximum difference between the dimple diameters of any two dimples arranged along the sides of one of the reference triangles is 0.100 inches.
3. The golf ball of claim 1 , wherein the second domain includes a center dimple having a center that is coincident with the central point of the second domain, and wherein the dimples of the second domain, other than the center dimple of the second domain, are arranged along the sides of at least three reference quadrilaterals, wherein the reference quadrilaterals are concentric quadrilaterals having a common center that is coincident with the central point of the second domain.
4. The golf ball of claim 3 , wherein the maximum difference between the dimple diameters of any two dimples arranged along the sides of one of the reference triangles is 0.100 inches, and wherein the maximum difference between the dimple diameters of any two dimples arranged along the sides of one of the reference quadrilaterals is 0.100 inches.
5. The golf ball of claim 1 , wherein the dimples of the second domain are arranged along the sides of at least three reference quadrilaterals, wherein the reference quadrilaterals are concentric quadrilaterals having a common center that is coincident with the central point of the second domain.
6. The golf ball of claim 5 , wherein the maximum difference between the dimple diameters of any two dimples arranged along the sides of one of the reference triangles is 0.100 inches, and wherein the maximum difference between the dimple diameters of any two dimples arranged along the sides of one of the reference quadrilaterals is 0.100 inches.
7. The golf ball of claim 1 , wherein each domain includes dimples having at least three different dimple diameters.
8. The golf ball of claim 3 , wherein the dimples arranged along the sides of at least one of the reference triangles include dimples having at least three different diameters.
9. The golf ball of claim 8 , wherein the dimples arranged along the sides of at least one of the reference quadrilaterals include dimples having at least three different diameters.
10. The golf ball of claim 5 , wherein the dimples arranged along the sides of at least one of the reference triangles include dimples having at least three different diameters.
11. The golf ball of claim 10 , wherein the dimples arranged along the sides of at least one of the reference quadrilaterals include dimples having at least three different diameters.