Golf ball

Details Golf ball Golf ball

2007-04-10

2007-04-10

Gorden, Raeann (Department: 3711)

Games using tangible projectile

Golf

Ball

Reexamination Certificate

active

11234262

ABSTRACT:
Golf ball2has a core4, a mid layer5and a cover6. This mid layer5includes 20 parts by weight or greater and 60 parts by weight or less of a styrene block-containing thermoplastic elastomer having a material hardness of less than 10, and 40 parts by weight or greater and 80 parts by weight or less of an ethylene-(meth)acrylic acid copolymer-based ionomer resin having a material hardness of 50 or greater and 70 or less. This mid layer5has a hardness of 35 or greater and 50 or less, and a thickness of equal to or less than 1.2 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 triple radius dimples is equal to or greater than 50%.

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patent: 2004/0142771 (2004-07-01), Sajima et al.
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