| 摘要 |
In a golf ball a spherical surface of which is divided in such a manner as to correspond to the facets of a 12-20 hedron, dimple patterns having the same arrangement are disposed in spherical regular pentagons, the dimple pattern is constituted in such a manner that the dimple arrangement thereof is different from each other when viewed from the direction of each side of the spherical regular pentagon, and the directions of each dimple pattern in five spherical regular pentagons aligned on one side along each great circle path are different from each other in the same sequence with respect to each great circle path. In a golf ball a spherical surface of which is divided in such a manner as to correspond to the facets of a cubic octagon, too, dimple patterns having the same arrangement is formed in each spherical regular triangle, the dimple pattern is constituted in such a manner that dimple arrangement thereof is different from each other when viewed from the direction of each side of the spherical regular triangle, and the directions of each dimple pattern in three spherical regular triangles aligned on one side along each great circle path are different from each other in the same sequence with respect to each great circle path.
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