Golf ball

• US 5,174,578 A
• Filed: 04/25/1991
• Issued: 12/29/1992
• Est. Priority Date: 12/19/1990
• Status: Expired due to Term

• Current Assignee: SRI Sports Limited (Sumitomo Rubber Industries Limited)
• Original Assignee: Sumitomo Rubber Industries Limited
• Inventors: Oshima, Shinji, Oka, Kengo
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US07/691,501
• Time in Patent Office: 614 Days
• Field of Search: 273/232
• US Class Current: 473/384
• CPC Class Codes: A63B 37/0004 Surface depressions or protrusions
• CPC Class Codes: A63B 37/0009 Polygonal
• CPC Class Codes: A63B 37/0018 Specified number of dimples
• CPC Class Codes: A63B 37/002 Specified dimple diameter
• CPC Class Codes: A63B 37/0021 Occupation ratio, i.e. percentage surface occupied by dimples
• CPC Class Codes: A63B 37/0026 Balata
• CPC Class Codes: A63B 37/0052 Liquid cores
• CPC Class Codes: A63B 37/008 Diameter
• CPC Class Codes: A63B 37/0087 Deflection or compression
• CPC Class Codes: A63B 37/0096 Spin rate

Abstract

A golf ball having 280 to 540 dimples including plural types of dimples of different surface configurations such as circular dimples or regular polygonal dimples formed thereon. The percentage of dimples unadjacent to dimples of different surface configurations is less than 30 of the total number of dimples so that one dimple is adjacent to many dimples of different configurations.

Claims

1. A golf ball comprising 280 to 540 dimples with at least two types of dimples of different surface configurations being formed thereon, in which the percentage of dimples unadjacent to dimples of different surface configurations is less than 30 of a total number of dimples, the types of dimples of different surface configurations consist of a combination of circular dimples and regular polygonal dimples or regular polygonal dimples of a different number of sides, with the circular dimples generally having the shape of a circle.

2. The golf ball as claimed in claim 1, wherein the golf ball only has dimples in the shape of a circle and dimples of regular polygonal shape.

3. The golf ball as claimed in claim 2, wherein the regular polygonal dimples have eight sides.

4. The golf ball as claimed in claim 3, wherein the circular dimples have a diameter of 3.50 mm and wherein over two hundred circular dimples are present on the golf ball.

5. The golf ball as claimed in claim 4, wherein a length of a diagonal line of the regular polygonal dimples is 3.50 mm and a total number of regular polygonal dimples is 130.

6. The golf ball as claimed in claim 3, wherein a length of a diagonal line of the regular polygonal dimples is 3.50 mm and a total number of regular polygonal dimples is 130.

7. The golf ball as claimed in claim 1, wherein the golf ball only has regular polygonal dimples of different number of sides.

8. The golf ball as claimed in claim 7, wherein two sets of polygonal dimples are provided, the first set has four sides and the second set has six sides.

9. The golf ball as claimed in claim 8, wherein the dimples having four sides are regular quadrangular dimples with a length of a diagonal line being 4.10 mm and a total number of 216 dimples being provided.

10. The golf ball as claimed in claim 9, wherein the dimples having six sides are regular hexagonal dimples with a length of a diagonal line being 3.70 mm and a total number of 120 dimples being provided.

11. The golf ball as claimed in claim 8, wherein the dimples having six sides are regular hexagonal dimples with a length of a diagonal line being 3.70 mm and a total number of 120 dimples being provided.