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:
Sep. 14, 2004
Filed:
Aug. 19, 2002
Masaru Kouno, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
A golf clubhead containing a main body and a face member, the main body including a main shell portion having a hollow and a tubular inner extension of a hosel protruding in the hollow, and at least a part of the tubular inner extension separating from the inner surface of the main shell portion. A method of making the golf clubhead which includes making a first lost form corresponding to the main shell portion, making a second lost form corresponding to the tubular inner extension, fixing the second lost form to the first lost form to make a third lost form corresponding to the main body, making a casting mold using the third lost form, and casting a metallic material into the main body using the casting mold.