US Patent 6899638 Golf club
Patent 6899638 was granted and assigned to Mizuno Corporation on May, 2005 by the United States Patent and Trademark Office.
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Patent abstract
The inventive golf club comprises a head of a metal having a face and a flexural range, defined in the face, where the quantity of flexure in a direction perpendicular to the face is at least 45% of the maximum quantity of vertical flexure of the face. The flexural range is arranged in coincidence with a hitting spot distribution range of a player in the face. Alternatively, a flexural range having a spring constant of at least 2 kN/mm and not more than 4 kN/mm is present in the face of the inventive golf club.
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Patent Inventor Names
Kazuhiro Ohmori0
Kenji Onoda0
Koji Sakai0
Mototaka Iwata0
Takeshi Naruo0
Yoshihiro Fujikawa0
Yukihiro Teranishi0
Date of Patent
May 31, 2005
0Patent Application Number
098456610
Date Filed
April 30, 2001
0Patent Primary Examiner
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US Patent 6899638 Golf club
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