The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2004
Filed:
Dec. 01, 2000
Mototaka Iwata, Osaka, JP;
Hiroshi Nagao, Osaka, JP;
Kanta Shimotaka, Osaka, JP;
Kei Tsuji, Osaka, JP;
Koji Sakai, Oaska, JP;
Takashi Kimura, Osaka, JP;
Mizuno Corporation, Osaka, JP;
Abstract
A golf club head ( ) has an ellipsoid of inertia ( ) with its center at a center of gravity G. When the ellipsoid of inertia ( ) is virtually cut with a plane passing through the center of gravity of the golf club head ( ) and being parallel to a face surface ( ), a major axis of a plane ellipse ( ) appearing on its cut surface forms an angle of &thgr; with an intersecting line ( ) of the cut surface and a ground surface ( ). The major axis extends upward and away from the ground surface ( ) as it approaches a toe part ( ). The angle &thgr; 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 ( ) to the length b of a minor axis ( ) of the plane ellipse ( ) is not smaller than 1 and not larger than 4.