Golf ball

• US 5,087,048 A
• Filed: 07/13/1990
• Issued: 02/11/1992
• Est. Priority Date: 07/13/1990
• Status: Expired due to Term

• Current Assignee: Chin Shang Industrial Co. Ltd.
• Original Assignee: Charles S.C. Su, Donald J.C. Sun
• Inventors: Su, Charles S. C., Sun, Donald J. C.
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US07/552,089
• Time in Patent Office: 578 Days
• Field of Search: 273/232, 273/62, 273/220, 40/327
• US Class Current: 473/384
• CPC Class Codes: A63B 37/0004 Surface depressions or protrusions
• CPC Class Codes: A63B 37/00065 located around the pole or the equator
• CPC Class Codes: A63B 37/0018 Specified number of dimples
• CPC Class Codes: A63B 37/0019 Specified dimple depth
• CPC Class Codes: A63B 37/002 Specified dimple diameter
• CPC Class Codes: A63B 37/0021 Occupation ratio, i.e. percentage surface occupied by dimples

Abstract

A golf ball characterized by enhanced flight distance and enhanced aerodynamic symmetry, the ball having a generally spherical surface with dimple patterns thereon, the improvement comprising between about 75% and 85% of the ball spherical surface occupied by the dimples; there being smaller and larger dimples, all of which have diameters within the range of about 0.110 to 0.150 inches. There are dimple-free multiple great circle arcs on the ball surface, which define n-sided spherical surface polygons associated with opposite polar zones, with n² -2n of the smaller dimples within each polygon. The ball also has an equator, and great circle arcs also defining multiple spherical surface triangles with legs on the equator, there being n² +2n of the smaller dimples within each triangle.

Claims

1. In a golf ball characterized by enhanced flight distance and enhanced aerodynamic symmetry, the ball having a generally spherical surface with dimple patterns thereon, the improvement comprising:

a) between about 75% and 85% of the ball spherical surface occupied by the dimples,

b) there being smaller and larger dimples, all of which have diameters within the range of 0.110 to 0.160 inches,

c) there being dimple-free multiple great circle arcs on the ball surface, which define n-sided spherical surface polygons associated with axially opposite polar zones,

d) there being n² -2n of the smaller dimples within each polygon,

e) the ball also having an equator, and great circle arcs also defining multiple spherical surface triangles with legs on said equator,

f) and there being n² +2n of the smaller dimples within said triangles on each side of the ball equator.

2. The improvement of claim 1 wherein smaller dimples have a larger depth to diameter ratio than larger dimples.

3. The improvement of claim 2 wherein between 78% and 82% of the ball surface is occupied by said dimples.

4. The improvement of claim 1 wherein each polygon has five sides to define a spherical surface pentagon.

5. The improvement of claim 4 wherein there are 15 of the smaller dimples within each pentagon, and symmetrically spaced about an axis of said ball centrally intersecting the pentagon.

6. The improvement of claim 1 wherein there are eight of the smaller surface dimples within each triangle.

7. The improvement of claim 1 wherein said equator is everywhere adjacent smaller dimples.

8. The improvement of claim 1 wherein said n² -2n dimples are each 0.135±

0.002 inches in diameter.

9. The improvement of claim 7 wherein said n² +2n dimples are each 0.135±

0.002 inches in diameter.

10. The improvement of claim 8 wherein other dimples on the ball are each 0.140±

0.002 inches in diameter.