Golf ball

Details Golf ball Golf ball

2007-08-28

2007-08-28

Trimiew, Raeann (Department: 3711)

Games using tangible projectile

Golf

Ball

Reexamination Certificate

active

11297351

ABSTRACT:
Golf ball2has a core4, a mid layer5and a cover6. The mid layer5has a hardness of 50 or greater and 70 or less, and a thickness of equal to or greater than 0.8 mm. The cover6has a hardness of less than 57, and a thickness of less than 1.5 mm. The golf ball2has numerous double radius dimples and numerous triple radius dimples on the surface thereof. Proportion of the double radius dimples is 20% or greater and 42% or less, and proportion of the triple radius dimples is equal to or greater than 50%. Ratio (Tm/Tc) of the thickness Tm of the mid layer5to the thickness Tc of the cover6is 0.5 or greater and 4.0 or less.

REFERENCES:
patent: 5338039 (1994-08-01), Oka et al.
patent: 5735757 (1998-04-01), Moriyama
patent: 5782707 (1998-07-01), Yamagishi et al.
patent: 5899822 (1999-05-01), Yamagishi et al.
patent: 6599204 (2003-07-01), Kasashima et al.
patent: 6620059 (2003-09-01), Sasaki et al.
patent: 6702695 (2004-03-01), Higuchi et al.
patent: 6899643 (2005-05-01), Sajima et al.
patent: 6951520 (2005-10-01), Ohama et al.
patent: 2006/0116220 (2006-06-01), Ohama et al.

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