Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Surface finishing
Reexamination Certificate
2005-06-03
2010-06-01
Lee, Edmund H. (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Surface finishing
C264S279100
Reexamination Certificate
active
07727437
ABSTRACT:
The invention provides a method of manufacturing golf balls composed of a core and one or more cover layer which encloses the core, at least one cover layer being a thin layer having a thickness of 1.0 mm or less. The thin layer is formed to a desired thickness on a surface of a core or spherical body by holding within a mold cavity the core or a spherical body composed of the core enclosed by a cover layer and injecting a synthetic resin material into a space defined by a surface of the core or spherical body and an inner face of the mold cavity so as to form a cover layer on the surface of the core or spherical body, then grinding the resulting cover layer to a thickness of at least 0.1 mm with a specific type of grinder. Golf balls obtained in this way can be provided with a good sphericity even when the cover is formed to a very small thickness.
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Certified English translation of JP 2001-309996.
Higuchi Hiroshi
Kimura Akira
Miyakoshi Naoki
Ogawana Toru
Bridgestone Sports Co. Ltd.
Lee Edmund H.
Sughrue & Mion, PLLC
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