Golf ball

Details Golf ball Golf ball

2006-01-17

2006-01-17

Gorden, Raeann (Department: 3711)

Games using tangible projectile

Golf

Ball

Reexamination Certificate

active

06986720

ABSTRACT:
Dimple4has a side wall curved face8and an edge neighboring curved face9. The side wall curved face8is situated between a point P4positioned downward from the dimple edge Ed by the depth of 20% in an in-depth direction and a point P3positioned downward from the dimple edge Ed by the depth of 50% in an in-depth direction. The edge neighboring curved face9is situated between the dimple edge Ed and a point P5positioned downward from the dimple edge Ed by the depth of 10% in an in-depth direction. Proportion of the number NL of dimples4having the diameter of equal to or greater than 3.90 mm occupied in total number N of the dimples is equal to or greater than 75%. Proportion of the number ML of dimples having the ratio (Re/Rw) between a radius of curvature of Re of the edge neighboring curved face9and a radius of curvature Rw of the side wall curved face8of 0.5 or greater and 1.5 or less of equal to or greater than 75%, having the diameter of equal to or greater than 3.90 mm and having the radius of curvature Re of 2.0 mm or greater and 5.0 mm or less, occupied in the number NL is equal to or greater than 50%.

REFERENCES:
patent: 4813677 (1989-03-01), Oka et al.
patent: 5735757 (1998-04-01), Moriyama
patent: 6346053 (2002-02-01), Inoue et al.
patent: 2004/0102259 (2004-05-01), Ohama et al.
patent: 2004/0142771 (2004-07-01), Sajima et al.

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