Golf ball layer having reduced surface hardness and method...

Details Golf ball layer having reduced surface hardness and method... Golf ball layer having reduced surface hardness and method...

2009-02-27

2010-10-26

Trimiew, Raeann (Department: 3711)

Games using tangible projectile

Golf

Ball

Reexamination Certificate

active

07819760

ABSTRACT:
A golf ball comprising a core and a cover, wherein the core comprises a thermoset rubber composition, a geometric center and a treated outer surface, the treated outer surface having a first hardness and the geometric center having a second hardness, the treated outer surface being treated with a surface-softening material comprising at least one fatty acid and/or fatty acid salt plasticizer composition such that the second hardness is greater than the first hardness to define a negative hardness gradient. In another emobodiment, the golf ball comprises a thermoset rubber composition core and a cover, said core comprising a treated outer surface and a geometric center, the treated outer surface comprising a fatty acid and/or fatty acid salt plasticizer composition and extending inward from the surface from about 0.001 inches to about 0.100 inches, the treated outer surface further having a first hardness and the geometric center having a second hardness, wherein the first hardness is less than the second hardness to define a negative hardness gradient.

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