| 摘要 |
A surface is comparted into eight spherical regular triangles (T1 to T8) through twelve comparting lines formed by projecting twelve sides of a regular octahedron inscribed on the surface onto the surface. A dimple is arranged for each spherical regular triangle. In each of six apexes (P1 to P6), dimple patterns of four spherical regular triangles sharing the apexes are not identical to each other. Moreover, the dimple patterns of the two spherical regular triangles sharing each of the apexes and opposed to each other are neither line symmetrical nor point symmetrical with each other. In each of the twelve comparting lines, furthermore, the dimple patterns of two spherical regular triangles sharing the comparting line are neither line symmetrical nor point symmetrical. In such a golf ball, it is possible to prevent dimple effects from being reduced when one of comparting great circles (L1, L2 and L3) is coincident with the highest speed portion. |
