Title:
ゴルフ・クラブ・ヘッドまたは他のボール打撃装置の構造
Document Type and Number:
Japanese Patent JP5244778
Kind Code:
B2
Abstract:
Ball striking devices, such as golf club heads (including putter heads), have a high moment of inertia about their center, to help prevent twisting and mis-hits, particularly when the ball striking device hits the ball at a somewhat off center position. The ball striking head of the ball striking device may be structured and/or weighted (optionally with separately attachable weight elements) to have a moment of inertia about a center of the ball striking surface of at least 10,000 g/cm 2 , and in some examples, the moment of inertia may be at least 11,000 g/cm 2 , or even at least 12,000 g/cm 2 . In some examples, the moment of inertia may be at least 20,000 g/cm 2 , or even at least 25,000 g/cm 2 or at least 28,000 g/cm 2
Inventors:
Franklin David N.
Tights john tee.
Tavares Gary Gee.
Tights john tee.
Tavares Gary Gee.
Application Number:
JP2009292055A
Publication Date:
July 24, 2013
Filing Date:
December 24, 2009
Export Citation:
Assignee:
Nike International Limited
International Classes:
A63B53/04
Domestic Patent References:
| JP2003210629A | ||||
| JP20048682A |
Foreign References:
| US20030228925 |
Attorney, Agent or Firm:
Hatsushi Shimizu
Masao Haruna
Hirotaka Yamaguchi
Toshi Gobe
Ryuichi Inoue
Toshimitsu Sato
Koichi Niimi
Tomohiko Kobayashi
Shinichi Watanabe
Masato Ozeki
Yoshihiro Igarashi
Kazuya Kawamoto
Masao Haruna
Hirotaka Yamaguchi
Toshi Gobe
Ryuichi Inoue
Toshimitsu Sato
Koichi Niimi
Tomohiko Kobayashi
Shinichi Watanabe
Masato Ozeki
Yoshihiro Igarashi
Kazuya Kawamoto