Solid golf ball

Details Solid golf ball Solid golf ball

1998-03-12

1999-11-30

Marlo, George J.

Games using tangible projectile

Golf

Ball

473372, 473384, A63B 3706, A63B 3712, A63B 3714

Patent

active

059933321

ABSTRACT:
A solid golf ball comprising a solid core and a cover has a multiplicity of dimples in its surface. The core undergoes a distortion of 2.8-4.0 mm under a load of 100 kg. The distortion (mm) of the core under a load of 100 kg divided by the distortion (mm) of the ball under a load of 100 kg is 1.0-1.3. The cover has a gage of 1.4-1.9 mm and a Shore D hardness of 53-60. Dimples of at least three types having different diameters are formed in the cover surface in a total number of 390-450. The diameter/depth ratio of each dimple is from 18/1 to 27/1. The volume of a dimple divided by the volume of a cylinder whose diameter and height correspond to the diameter and depth of the dimple, respectively, is 0.390-0.550. The golf ball is improved in flight distance, hitting feel and spin and will cover a distance even when hit at low head speeds.

REFERENCES:
patent: 5813924 (1998-09-01), Yamagishi et al.
patent: 5820492 (1998-10-01), Yamagishi et al.

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