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:
Dec. 13, 2011
Filed:
Apr. 24, 2007
Applicant:
Tomoya Hirano, Kobe, JP;
Inventor:
Tomoya Hirano, 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 golf club head comprises a face portion of which front face defines a club face, wherein at least a part of the face portion is formed by a unidirectionally rolled plate of a titanium alloy having alpha phase such as alpha titanium alloys and alpha+beta titanium alloys, and the unidirectional rolled direction of the plate is oriented in the toe-heel direction of the head. At least 50% in area of the face portion is formed by the unidirectionally rolled plate. The angle (theta) between the rolled direction and the toe-heel direction is not more than 15 degrees.