Method of the production of a golf ball

Details Method of the production of a golf ball Method of the production of a golf ball

2007-04-10

2007-04-10

Lee, Edmund H. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Flash or sprue removal type

C264S162000, C264S320000

Reexamination Certificate

active

10910310

ABSTRACT:
A ball body is formed with a mold having upper and lower mold half. Dimples16having a shape inverted from the shape of the pimples of the mold are formed on the ball body. The dimples16in the vicinity of the equatorial line have a size in the meridional direction D1being greater than a size in the latitudinal direction D2.The difference between the size in the meridional direction D1and the size in the latitudinal direction D2is 0.01 mm or greater and 0.50 mm or less. By grinding the ball body in the vicinity of the equatorial line, a flash generated on the seam resulting form the mold is removed. According to the grinding, the size in the meridional direction of the dimple16is reduced, and thus, plane shape of the dimple becomes closer to a perfect circle.

REFERENCES:
patent: 5090705 (1992-02-01), Oka et al.
patent: 5338039 (1994-08-01), Oka et al.
patent: 5356150 (1994-10-01), Lavallee et al.
patent: 6620060 (2003-09-01), Ogg et al.
patent: 6981927 (2006-01-01), Aoyama
patent: 60-232861 (1985-11-01), None

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