Golf ball

Details Golf ball Golf ball

2006-05-30

2006-05-30

Gorden, Raeann (Department: 3711)

Games using tangible projectile

Golf

Ball

Reexamination Certificate

active

07052415

ABSTRACT:
Golf ball has a core, a cover, and numerous dimples12formed on the surface of this cover. Principal component of the cover is a polyurethane elastomer. This cover has a Shore D hardness of 30 or greater and 55 or less. Occupation ratio Y of total area of the dimples12to surface area of a phantom sphere is equal to or greater than 75%. Proportion of the number NL of the dimples12having a diameter of equal to or greater than 3.90 mm to total number N of the dimples12is equal to or greater than 75%. Proportion of the number ML of dimples having a diameter of equal to or greater than 3.90 mm, having (Re/Rw) of 0.5 or greater and 1.5 or less, and having Re of 2.0 mm or greater and 5.0 mm or less to the number NL is equal to or greater than 50%.

REFERENCES:
patent: 4813677 (1989-03-01), Oka et al.
patent: 5735757 (1998-04-01), Moriyama
patent: 5803831 (1998-09-01), Sullivan et al.
patent: 6346053 (2002-02-01), Inoue et al.
patent: 2004/0102259 (2004-05-01), Ohama et al.
patent: 2004/0142771 (2004-07-01), Sajima et al.
patent: 2004/0214663 (2004-10-01), Sajima et al.
patent: 2002-191721 (2002-07-01), None

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