Title:
ゴルフボール
Document Type and Number:
Japanese Patent JP4754350
Kind Code:
B2
Abstract:
Golf ball 2 has a northern hemisphere N above the equatorial line 16 , and a southern hemisphere S below the equatorial line 16 . Each of the northern hemisphere N and the southern hemisphere S has a pole vicinity region 18 , an equator vicinity region 20 and a coordination region 22 . The pole vicinity region 18 , the equator vicinity region 20 and the coordination region 22 have numerous dimples 8 , respectively. The dimple pattern in the pole vicinity region 18 includes multiple units that are rotationally symmetric each other centered on the pole point P. The dimple pattern in the equator vicinity region 20 includes multiple units that are rotationally symmetric each other centered on the pole point P. Number of the units in the pole vicinity region 18 is different from number of the units in the equator vicinity region 20 . The dimple pattern in the coordination region 22 cannot be comparted into multiple units that are rotationally symmetric each other centered on the pole point P.
Inventors:
Takahiro Sajima
Application Number:
JP2005376942A
Publication Date:
August 24, 2011
Filing Date:
December 28, 2005
Export Citation:
Assignee:
sri sports corporation
International Classes:
A63B37/00
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Attorney, Agent or Firm:
Kengo Oka
Sumitomo Norio
Sumitomo Norio