Dimple patterns for golf balls

Abstract

Golf balls having dimple patterns arranged in dipyramid layouts are disclosed. The patterns may be arranged in triangular dipyramid, quadrilateral dipyramid, pentagonal dipyramid, or hexagonal dipyramid layouts. The dipyramid patterns have six, eight, ten, or twelve substantially identical dimple sections, where each dimple section is defined by a spherical triangle. The dimples in each of the identical dimple sections have at least two different dimple diameters including a minimum dimple diameter and a maximum dimple diameter. The resulting dimple patterns have a surface coverage of about 70 percent or less. The reduced surface coverage helps to reduce the flight of the golf balls.

What is claimed is: 
     
         1 . A golf ball, comprising:
 a cover surrounding a core, wherein the cover comprises a substantially spherical exterior surface having a constant radius,   a plurality of dimples disposed on the substantially spherical exterior surface, wherein the dimples are arranged in a dipyramid pattern comprising six or ten substantially identical dimple sections,   wherein the dimple arrangement within each substantially identical dimple section is asymmetric, and   wherein the dimples cover about 70 percent or less of the substantially spherical exterior surface.   
     
     
         2 . The golf ball of  claim 1 , wherein the dimples cover about 65 percent or less of the substantially spherical surface 
     
     
         3 . The golf ball of  claim 1 , wherein the dipyramid pattern comprises one dimple free great circle. 
     
     
         4 . The golf ball of  claim 1 , wherein the dimple arrangement within each substantially identical dimple section is at least one of: not rotationally symmetric about a center of the dimple section or non-mirror symmetric about a central plane of the dimple section. 
     
     
         5 . The golf ball of  claim 1 , wherein the dimples in each of the substantially identical dimple sections comprise at least two different dimple diameters including a minimum dimple diameter and a maximum dimple diameter. 
     
     
         6 . The golf ball of  claim 1 , wherein a dimple is located at a single vertex of each substantially identical dimple section. 
     
     
         7 . A golf ball, comprising:
 a cover surrounding a core, wherein the cover comprises a substantially spherical exterior surface having a constant radius,   a plurality of dimples disposed on the substantially spherical exterior surface, wherein the dimples are arranged in a dipyramid pattern comprising at least six substantially identical dimple sections,   wherein the dimple arrangement within each substantially identical dimple section lacks at least one of: rotational symmetry about a center of the dimple section or mirror symmetry about a central plane of the dimple section, and   wherein the dimples cover about 65 percent or less of the substantially spherical exterior surface.   
     
     
         8 . The golf ball of  claim 7 , wherein the dipyramid pattern comprises six, eight, ten, twelve, or fourteen substantially identical dimple sections. 
     
     
         9 . The golf ball of  claim 7 , wherein the dipyramid pattern comprises one dimple free great circle. 
     
     
         10 . The golf ball of  claim 7 , wherein the dimple arrangement within each substantially identical dimple section lacks both rotational symmetry about the center of the dimple section and mirror symmetry about the central plane of the dimple section. 
     
     
         11 . The golf ball of  claim 7 , wherein the dimples cover about 60 percent or less of the substantially spherical surface. 
     
     
         12 . The golf ball of  claim 7 , wherein the dimples in each of the substantially identical dimple sections comprise at least three different dimple diameters including a minimum dimple diameter, a maximum dimple diameter, and an additional dimple diameter. 
     
     
         13 . The golf ball of  claim 7 , wherein the dimples in each of the substantially identical dimple sections comprise at least seven different dimple diameters including a minimum dimple diameter, a maximum dimple diameter, and at least five additional dimple diameters. 
     
     
         14 . The golf ball of  claim 13 , wherein each of the at least seven different dimple diameters range from about 0.100 inches to about 0.200 inches. 
     
     
         15 . A golf ball, comprising:
 a cover surrounding a core, wherein the cover comprises a substantially spherical exterior surface having a constant radius,   a plurality of dimples disposed on the substantially spherical exterior surface, wherein the dimples are arranged in a dipyramid pattern comprising six or ten substantially identical dimple sections,   wherein the dimple arrangement within each substantially identical dimple section is not rotationally symmetric about a center of the dimple section and the dimple arrangement is non-mirror symmetric about a central plane of the dimple section, and   wherein the dimples cover about 65 percent or less of the substantially spherical exterior surface.   
     
     
         16 . The golf ball of  claim 15 , wherein the dipyramid pattern comprises one dimple free great circle. 
     
     
         17 . The golf ball of  claim 15 , wherein the dimples are arranged entirely within each substantially identical dimple section. 
     
     
         18 . The golf ball of  claim 15 , wherein the dimples in each of the substantially identical dimple sections comprise at least three different dimple diameters including a minimum dimple diameter, a maximum dimple diameter, and at least one additional dimple diameter. 
     
     
         19 . The golf ball of  claim 15 , wherein the dimples in each of the substantially identical dimple sections comprise at least seven different dimple diameters including a minimum dimple diameter, a maximum dimple diameter, and at least five additional dimple diameters. 
     
     
         20 . The golf ball of  claim 19 , wherein the minimum difference in diameter between any two dimples within each dimple section is about 0.010 inches or more.