Two-piece solid golf ball

Details Two-piece solid golf ball Two-piece solid golf ball

1997-02-27

1998-09-08

Marlo, George J.

Games using tangible projectile

Golf

Ball

473372, 473378, A63B 3706, A63B 3712

Patent

active

058038345

ABSTRACT:
In a two-piece solid golf ball comprising a solid core and a cover having a number of dimples, the solid core has such a distribution of hardness on a JIS-C hardness scale that a surface hardness is 70-85 degrees and a center hardness is lower than the surface hardness by 8-20 degrees, and the hardness within 5 mm inside the core surface is up to 8 degrees lower than the surface hardness. The cover has a hardness of 75-90 degrees on a JIS-C hardness scale which is higher than the surface hardness of the core by 1-15 degrees and a gage of 1.5-1.95 mm. The number of dimples is 360-450. Since the hardness distribution of the core and cover, the gage of the cover, and the number of dimples are optimized, the ball is improved in flight distance, controllability and hitting feel.

REFERENCES:
patent: 5403010 (1995-04-01), Yabuki et al.
patent: 5439227 (1995-08-01), Egashira et al.
patent: 5452898 (1995-09-01), Yamagishi et al.
patent: 5470075 (1995-11-01), Nesbitt et al.
patent: 5482286 (1996-01-01), Molitor et al.
patent: 5490673 (1996-02-01), Hiraoka
patent: 5497996 (1996-03-01), Carlorniga
patent: 5601503 (1997-02-01), Yamagishi et al.
patent: 5674137 (1997-10-01), Maruko et al.

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