Multi-piece solid golf ball

Details Multi-piece solid golf ball Multi-piece solid golf ball

2005-05-31

2005-05-31

Blau, Stephen (Department: 3711)

Games using tangible projectile

Golf

Ball

C473S378000

Reexamination Certificate

active

06899641

ABSTRACT:
A multi-piece solid golf ball comprising a core, an intermediate layer enclosing the core, and an outer layer enclosing the intermediate layer is characterized in that the intermediate layer is made of a thermoplastic resin composition, the intermediate layer on its surface has a Shore D hardness of at least 57, the intermediate layer has a specific gravity of 1.00-1.30 g/cm3, the outer layer has a specific gravity of at least 1.00 g/cm3, the core has a specific gravity of 1.05-1.20 g/cm3, the intermediate layer and the outer layer have a total gauge of up to 3.3 mm, [(core surface JIS-C hardness)−(core center JIS-C hardness)]≧16, [(intermediate layer surface JIS-C hardness)−(core surface JIS-C hardness)]≧0, and −18≦[(outer layer surface Shore D hardness)−(intermediate layer surface Shore D hardness)]<0.

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