Golf ball

Details Golf ball Golf ball

2005-10-04

2005-10-04

Gorden, Raeann (Department: 3711)

Games using tangible projectile

Golf

Ball

Reexamination Certificate

active

06951520

ABSTRACT:
Golf ball1has a core2and a cover3. The core2is composed of a center4and a mid layer5. Numerous dimples6are formed on the surface of the cover3. Base polymer of the cover3includes a mixture of an ionomer resin and a thermoplastic elastomer as a principal component. Shore D hardness of this cover3is 55 or greater and 70 or less. A proportion of number of dimples6having the tilt angle α of from the position, which is 20% downward from the dimple edge in an in-depth direction, down to the position, which is 50% downward from the dimple edge, of 65° or greater and 85° or less occupied in total number of dimples is equal to or greater than 20%.

REFERENCES:
patent: 6616548 (2003-09-01), Kato et al.
patent: 2002/0065150 (2002-05-01), Kato et al.

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