Dimpled golf ball
First Claim
1. A golf ball having plural types of dimples on a spherical surface, wherein the spherical surface is substantially a regular icosahedron or pseudo-icosahedron having twenty triangles, apexes of five triangles joined together at a vertex formed by each apex of said triangles,those dimples arranged in each triangle constitute an arrangement unit, a first dimple having a smallest diameter is located substantially at each vertex on the overall spherical surface, five second dimples having a greater diameter than that of the first dimple are closely and equidistantly arranged around the first dimple, and when a pentagon which circumscribes the five second dimples is drawn with its center at the vertex, an average depth of those dimples located within twelve pentagons on the overall spherical surface is up to 85% of the average depth of those dimples located in the remaining areas outside the pentagon.
1 Assignment
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Accused Products
Abstract
A golf ball has plural types of dimples on a spherical surface, which is assumed to be a regular icosahedron having twenty triangles. Apexes of five triangles join together at a vertex. Those dimples arranged in each triangle constitute an arrangement unit. A first dimple having a smallest diameter is located at the vertex, and second dimples having a greater diameter are equidistantly arranged around the first dimple. When a pentagon which circumscribes the second dimples is drawn, an average depth of those dimples located within the pentagon is up to 85% of the average depth of those dimples located in the remaining areas.
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Citations
16 Claims
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1. A golf ball having plural types of dimples on a spherical surface, wherein the spherical surface is substantially a regular icosahedron or pseudo-icosahedron having twenty triangles, apexes of five triangles joined together at a vertex formed by each apex of said triangles,
those dimples arranged in each triangle constitute an arrangement unit, a first dimple having a smallest diameter is located substantially at each vertex on the overall spherical surface, five second dimples having a greater diameter than that of the first dimple are closely and equidistantly arranged around the first dimple, and when a pentagon which circumscribes the five second dimples is drawn with its center at the vertex, an average depth of those dimples located within twelve pentagons on the overall spherical surface is up to 85% of the average depth of those dimples located in the remaining areas outside the pentagon.
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11. A golf ball having plural types of dimples on a spherical surface, wherein the spherical surface is substantially a regular icosahedron or pseudo-icosahedron having twenty triangles, apexes of five triangles joined together at a vertex formed by each apex of the triangles.
those dimples arranged in each triangle constitute an arrangement unit, five first dimples having a smallest diameter are equidistantly arranged substantially around each vertex on the overall spherical surface, and when a pentagon which circumscribes the five first dimples is drawn with its center at the vertex, an average depth of those dimples located within twelve pentagons on the overall spherical surface is up to 95% of the average depth of those dimples located in the remaining areas outside the pentagon.
Specification