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Patent Searching and Data


Title:
MULTI-PIECE GOLF BALL, METHOD OF MANUFACTURING THE SAME, AND MOLDING DIE USED FOR MANUFACTURING THE SAME
Document Type and Number:
WIPO Patent Application WO/2004/087265
Kind Code:
A1
Abstract:
A multi-piece golf ball, comprising a core (3), a first intermediate layer (5), a second intermediate layer (7), and a cover (9), the first intermediate layer (5) further comprising a plurality of ribs (51) formed on the core (3), wherein the second intermediate layer (7) is filled in recessed parts surrounded by the ribs (51), the cover (9) forms an outermost layer, the ribs are extended so that the widths thereof are increased from the cover side toward the core side. The golf ball is characterized in that the recessed parts are formed in funnel shapes by the side surfaces of the ribs, the core (3), the first intermediate layer (5), and the second intermediate layer (7) are different in hardness from each other, and the hardness of the first intermediate layer (5) is higher than that of the second intermediate layer (9).

Inventors:
NINOMIYA NORIKAZU (JP)
ONODA KENJI (JP)
OGAWA MASAO (JP)
NAKA YURI (JP)
Application Number:
PCT/JP2004/003960
Publication Date:
October 14, 2004
Filing Date:
March 23, 2004
Export Citation:
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Assignee:
NINOMIYA NORIKAZU (JP)
ONODA KENJI (JP)
OGAWA MASAO (JP)
NAKA YURI (JP)
International Classes:
A63B37/00; A63B37/04; A63B45/00; A63B37/02; (IPC1-7): A63B37/04
Foreign References:
JP2003024472A2003-01-28
US6217462B12001-04-17
Other References:
See also references of EP 1609511A4
Attorney, Agent or Firm:
Saegusa, Eiji (1-7-1 Doshomachi, Chuo-k, Osaka-shi Osaka, JP)
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