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. 06, 2003
Filed:
May. 24, 2001
Kenji Kobayashi, Niigata-ken, JP;
Masaei Tsurumaki, Niigata-ken, JP;
K. K. Endo Seisakusho, Niigata-ken, JP;
Abstract
A method for manufacturing a golf club with an improved durability which realizes so thin a club head that the head can be enlarged, suppressing the increase of the total weight. A cold rolled material, which is a beta type titanium alloy in a beta single phase and subjected to direct aging, is used for the head. Preferably, the material is subjected to at least 15% cold rolling reduction. The aging is able to improve durability and surface hardness. Due to the direct aging of the cold worked material without solution treatment, such a long time heat treatment is no longer necessary, thereby resulting in the reduction of production costs.