发明名称 |
Golf club head, iron golf club head, wood golf club head, and golf club set |
摘要 |
A golf club head (11) has an ellipsoid of inertia (12) with its center at a center of gravity G. When the ellipsoid of inertia (12) is virtually cut with a plane passing through the center of gravity of the golf club head (11) and being parallel to a face surface (11f), a major axis of a plane ellipse (13) appearing on its cut surface forms an angle of theta with an intersecting line (15) of the cut surface and a ground surface (16). The major axis extends upward and away from the ground surface (16) as it approaches a toe part (11t). The angle theta is not smaller than 0.5° and not larger than 9.5°. An aspect ratio a/b defined by a ratio of the length a of the major axis (13d) to the length b of a minor axis (13e) of the plane ellipse (13) is not smaller than 1 and not larger than 4.
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申请公布号 |
US6695712(B1) |
申请公布日期 |
2004.02.24 |
申请号 |
US20000701817 |
申请日期 |
2000.12.01 |
申请人 |
MIZUNO CORPORATION |
发明人 |
IWATA MOTOTAKA;NAGAO HIROSHI;SHIMOTAKA KANTA;TSUJI KEI;SAKAI KOJI;KIMURA TAKASHI |
分类号 |
A63B53/00;A63B53/04;(IPC1-7):A63B53/04 |
主分类号 |
A63B53/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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