Dimple patterns for golf balls
AssigneeAcushnet Company
InventorsMichael R. Madson, Nicholas M. Nardacci
Life of this patent
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Abstract
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.
Claims13
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 four first domains and four second domains, and wherein:
- the dimple pattern within the first domain is different from the dimple pattern within the second domain;
- the plurality of dimples comprises dimples having at least two different diameters including a maximum dimple diameter and one or more additional dimple diameters;
- each of the two or more different dimple diameters on the ball has a first domain diameter ratio defined by the equation:
- first
-
-
- domain
-
-
- diameter
-
-
- ratio
- =
- SD
-
-
- 1
- SD
-
-
- 1
- +
- SD
-
-
- 2
- and a second domain diameter ratio defined by the equation:
- second
-
-
- domain
-
-
- diameter
-
-
- ratio
- =
- SD
-
-
- 2
- SD
-
-
- 1
- +
- SD
-
-
- 2
- where SD1 is the number of dimples positioned within the first domain having a given diameter, and SD2 is the number of dimples positioned within the second domain having said given diameter;
- SD1=SD2for the maximum dimple diameter;
- and
- SD1≦½ (SD2)or SD1≧2(SD2)for each of the additional dimple diameters.
Dependencies are inferred from the claim text.