Golf ball

Details Golf ball Golf ball

2006-06-13

2006-06-13

Gorden, Raeann (Department: 3711)

Games using tangible projectile

Golf

Ball

Reexamination Certificate

active

07059979

ABSTRACT:
A golf ball has a large number of dimples (A to D) on a surface thereof. A surface area occupation ratio Y of the dimples is 0.80 to 0.90. A total volume V of the dimples is 300 mm3to 700 mm3. A mean volume Va to be a value obtained by dividing the total volume V by a total number N of the dimples is 1.30 mm3or more. A mean curvature R to be a mean value of a curvature r in the sectional shape of the dimple is 16 mm or more. A mean occupation ratio y to be a value obtained by dividing the surface area occupation ratio Y by the total number N of the dimples is 0.0022 or more. A sum X of a contour length x of the dimple and the surface area occupation ratio Y satisfy a relationship indicated by an expression (I):in-line-formulae description="In-line Formulae" end="lead"?X≦3882·Y+1495.  (I)in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 4813677 (1989-03-01), Oka et al.
patent: 5080367 (1992-01-01), Lynch et al.
patent: 5292132 (1994-03-01), Oka
patent: 5467994 (1995-11-01), Moriyama et al.
patent: 5911639 (1999-06-01), Kasashima et al.
patent: 6346053 (2002-02-01), Inoue et al.

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