Golf ball

Details Golf ball Golf ball

2007-01-30

2007-01-30

Kim, Eugene (Department: 3711)

Games using tangible projectile

Golf

Ball

C473S378000

Reexamination Certificate

active

10409102

ABSTRACT:
Golf ball1has a large number of dimples2on its surface. A surface area occupation ratio Y of these dimples2is equal to or greater than 75%. A ratio R1of the diameter of the maximum dimple dmaxto the diameter D of this golf ball1is 11.0% or greater and 18.0% or less. Total number N of the dimples is equal to or less than 320. A ratio R2of number of dimples2having a diameter d accounting for 11.0% or greater and 18.0% or less of the diameter D, occupied in total number N is equal to or greater than 20%. A mean occupation ratio y which is a value calculated by dividing the surface area occupation ratio Y by total number N is equal to or greater than 0.22%. A summation X of the contour length x of the dimples2and the surface area occupation ratio Y satisfy the relationship represented by the following formula (I).in-line-formulae description="In-line Formulae" end="lead"?X≦38.82·Y+1495  (I)in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 4813677 (1989-03-01), Oka et al.
patent: 4936587 (1990-06-01), Lynch et al.
patent: 5080367 (1992-01-01), Lynch et al.
patent: 5292132 (1994-03-01), Oka
patent: 5957786 (1999-09-01), Aoyama
patent: 6241627 (2001-06-01), Kasashima et al.
“The Legal Golf Ball,” Strictly Golf Balls. Louis Caschera, Jr. Michigan: strictly golf inc., copyright 1998, pp. 16 and 17.

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