Golf ball with uniform land configuration

• US 4,830,378 A
• Filed: 01/28/1987
• Issued: 05/16/1989
• Est. Priority Date: 01/28/1987
• Status: Expired due to Term

• Current Assignee: Wilson Sporting Goods Company (Anta International Group Holdings Ltd.)
• Original Assignee: Wilson Sporting Goods Company (Anta International Group Holdings Ltd.)
• Inventors: Aoyama, Steven
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US07/007,503
• Time in Patent Office: 839 Days
• Field of Search: 273/235 R, 273/232
• 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 37/0012 Dimple profile, i.e. cross-sectional view
• CPC Class Codes: A63B 37/0018 Specified number of dimples
• CPC Class Codes: A63B 37/008 Diameter

Abstract

A golf ball having an outer spherical surface and at least 320 dimples formed in the outer surface to provide land areas on the outer surface which surround the dimples. Each of the dimples has a triangular periphery at the ball'"'"'s outer surface provided by three sides and three flat surfaces which extend inwardly from the outer surface. The angle between each of the flat surfaces and a tangent to the ball'"'"'s outer surface at the intersection with the flat surface is from 14° to 26°. Each side of each dimple extends parallel to at least a portion of the side of an adjacent dimple. The distance between the parallel sides of adjacent dimples is constant over the outer spherical surface. The total land area is no greater than 20% of a sphere which circumscribes the ball'"'"'s outer spherical surface.

Claims

1. A golf ball having an outer spherical surface and at least 320 dimples formed in the outer surface to provide land areas on the outer surface which surround the dimples, each of the dimples having a triangular periphery at said outer surface provided by three sides and three flat surfaces which extend inwardly from the outer surface, the angle between each of the flat surfaces and a tangent to the outer surface at the intersection with the flat surface being from 14°

to 26°

, each side of each dimple extending parallel to at least a portion of the side of an adjacent dimple, the distance between the parallel sides of adjacent dimples being constant over the outer spherical surface, the total land area being no greater than 20% of a sphere which circumscribes said outer spherical surface.

2. The golf ball of claim 1 in which at least some of the dimples have a convex bottom surface which is a portion of a sphere.

3. The golf ball of claim 2 in which the spherical surface of each of said convex bottom surfaces is concentric with the outer spherical surface.

4. The golf ball of claim 1 in which the angle between each of the flat surfaces and a tangent to the outer surface at the intersection with the flat surface is 15°

.

5. The golf ball of claim 1 in which the distance between the parallel sides of adjacent dimples is between 0.017 and 0.0305 inch.