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:
Jan. 20, 2015
Filed:
Apr. 17, 2012
Applicant:
Tatsuya Yashiki, Kobe, JP;
Inventor:
Tatsuya Yashiki, Kobe, JP;
Assignee:
SRI Sports Limited, Kobe, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B 53/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A golf club shaft is manufactured using a plurality of prepreg sheets ato a. The plurality of prepreg sheets ato aincludes full length sheets ato adisposed all over in a shaft axis direction and partial sheets aand apartially disposed in the shaft axis direction. The number of plies is substantially an integer in all the full length sheets ato a. The full length sheets ato ainclude four or more bias sheets ato a. Circumferential winding start positions of the bias sheets ato aare dispersed in four or more positions. Preferably, the circumferential winding start positions of the full length sheets ato aare dispersed in five or more positions.