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. 21, 2004
Filed:
Sep. 05, 2002
Yoshinori Sano, Kobe, JP;
Sumitomo Rubber Industries, Inc., Hyogo-ken, JP;
Abstract
A wood-type golf club head containing a volume which is not less than 300 cc, including a main body and a face member disposed on the front of the main body to form a clubface. The face member is formed by (i) forging an alpha-beta-type titanium alloy at a temperature which is less than the transformation temperature to the beta phase of the alloy, and of which difference from the transformation temperature to the beta phase is not more than 100 deg.C., and (ii) subsequent cooling within a temperature range of from 0 to 100 deg.C. The face member is welded to the main body to form a junction therebetween, wherein the junction is partially or wholly shifted backwards from the edge of the clubface by at least 5 mm, and the total length of the edge of the clubface where the shift is at least 5 mm, is not less than 40% of the whole length of the edge.