Geodesic icosahedral golf ball dimple pattern

A method of laying out a dimple pattern on a golf ball comprising the steps of:

• a) constructing an icosahedron having 20 icosahedral triangles which is circumscribed by a sphere which has the diameter of the golf ball so that each apex of the icosahedron is intersected by the sphere,
• b) determining the point on an icosahedral triangle which is intersected by the lines which bisect each side of the icosahedral triangles,
• c) projecting said point onto the sphere to determine a geodesic focus point for the icosahedral triangle,
• d) connecting the geodesic focus point to each apex of the icosahedral triangle by a line segment so that the line segments and the sides of the icosahedral triangle form a right regular tetrahedron having a base formed by the icosahedral triangle and three triangular faces which merge at the geodesic focus point and which are in three different planes,
• e) repeating steps b through d for each of the icosahedral triangles to form a geodesically expanded icosahedron which has 60 of said triangular faces,
• f) laying out a substantially identical dimple pattern in each of said 60 triangular faces, and
• g) projecting the dimple pattern of said 60 triangular faces onto the sphere.