Golf ball

Details Golf ball Golf ball

1996-06-27

1998-04-07

Marlo, George J.

Games using tangible projectile

Golf

Ball

A63B 3714

Patent

active

057357579

ABSTRACT:
A golf ball of the present invention has a plurality of dimples on its surface. The dimples accounting for not less than twenty percent of a total number of dimples have a double radius shape in which the curvature of the bottom wall portion and the curvature of the peripheral wall portions extending from the upper end of the bottom wall portion to the opening of the dimple are different from each other. The double radius shape is set so that the relationship between a diameter D1 at the opening of the dimple and a diameter D2 at the inflection point falls within 0.95.gtoreq.D2/D1.gtoreq.0.50 and the relationship between the depth F to the deepest point of the dimple and the depth C to the inflection point falls within 1.00>C/F.gtoreq.0.85.

REFERENCES:
patent: 878254 (1908-02-01), Taylor
patent: 4979747 (1990-12-01), Jonkouski
patent: 5470076 (1995-11-01), Cadorniga

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