Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Simultaneous severing and shaping – or severing while work...
Patent
1991-07-24
1993-07-06
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Simultaneous severing and shaping, or severing while work...
264221, 264227, B29C 3340
Patent
active
052251330
ABSTRACT:
Golf balls are manufactured by supplying a golf ball - forming material into a mold defining a cavity of a predetermined surface pattern, thereby forming a golf ball having a surface pattern transferred from the mold cavity surface pattern. The mold is prepared by way of electroforming. First using an elastic non-metal profiling material, a male duplicate master is fabricated from a female standard mold having at least one accessory for assisting molding or post machining such as a parting surface and reference surface. An electroformed mold is fabricated from the male duplicate master. This electroformed mold is ready for use as the ball manufacturing mold.
REFERENCES:
patent: Re28826 (1976-05-01), Ladney, Jr.
patent: 1544929 (1925-07-01), Pack
patent: 2388776 (1945-11-01), Wallace
patent: 3188370 (1965-06-01), Gotzy
patent: 3548050 (1970-12-01), Mozar
patent: 3565978 (1971-02-01), Folger et al.
patent: 4213238 (1980-07-01), Gudorf
Harada Jumei
Ihara Keisuke
Bridgestone Corporation
Davis Robert B.
Woo Jay H.
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