Golf ball

• US 20010027141A1
• Filed: 03/08/2001
• Published: 10/04/2001
• Est. Priority Date: 03/08/2000
• Status: Active Grant

• Current Assignee: Sumitomo Rubber Industries Limited
• Original Assignee: Sumitomo Rubber Industries Limited
• Inventors: Sajima, Takahiro
• Granted Patent: US 6,719,647 B2
• Time in Patent Office: Days
• US Class Current: 473/378
• CPC Class Codes: A63B 37/0004 Surface depressions or protrusions
• CPC Class Codes: A63B 37/0006 Arrangement or layout of dimples
• CPC Class Codes: A63B 37/0018 Specified number of dimples
• CPC Class Codes: A63B 37/002 Specified dimple diameter
• CPC Class Codes: A63B 37/0096 Spin rate

Abstract

By three great circle-shaped comparting lines (L) formed by projecting the sides of an inscribed regular octahedron, a surface of a golf ball is comparted into eight spherical regular triangles (T1) to (T8). A dimple (1) is arranged over the surface of the golf ball, and furthermore, there is no great circle path to be a great circle which does not intersect the dimple (1). Any of the three comparting lines (L) is not coincident with an equator line (E). The equator line (E) is coincident with a great circle obtained by connecting middle points of sides of the spherical regular triangles (T1) to (T8). Any dimple (1) intersecting the equator line (E) does not centrally intersect the equator line (E).

Claims

1. A golf ball in which dimples are arranged equivalently or almost equivalently over eight spherical regular triangles obtained through three great circle-shaped comparting lines formed by projecting sides of an inscribed regular octahedron and any great circle path to be a great circle which does not intersect the dimples is not present,

wherein any of the three comparting lines is not coincident with an equator line.

2. The golf ball according to

claim 1

, wherein any dimple intersecting the equator line does not centrally intersect the equator line.

3. The golf ball according to

claim 1

, wherein the number of the dimples intersecting the equator line is 12 to 24 and all the dimples intersecting the equator line have an intersecting dimension which is less than ¼

of a dimple diameter.

4. The golf ball according to

claim 1

, wherein the three comparting lines centrally intersect 16 dimples or more, respectively.

5. The golf ball according to

claim 1

, wherein the equator line is coincident with a great circle obtained by connecting middle points of sides of the spherical regular triangle.