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:
May. 01, 2012
Filed:
Jan. 13, 2009
Applicant:
Hitoshi Oyama, Kobe, JP;
Inventor:
Hitoshi Oyama, Kobe, JP;
Assignee:
SRI Sports Limited, Kobe, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B 53/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hollow wood-type golf club head with stable flight direction and flight distance performances, the club head having a moment of inertia Ix 4,000 to 5,900 g·cmabout a vertical axis passing through the club head's center of gravity, and comprising a face with face bulge and face roll such that the radius of curvature Rx of the face bulge is from 12 to 25 inches, and the Ry/Rx ratio of the radius of curvature Ry of the face roll to the radius of curvature Rx of the face bulge is 0.50 to 0.90.