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. 30, 2018
Filed:
Dec. 06, 2013
Fujikura Rubber Ltd., Koto-ku, Tokyo, JP;
Yoshihito Kogawa, Saitama, JP;
Masaki Wakabayashi, Saitama, JP;
FUJIKURA RUBBER LTD., Koto-Ku, Tokyo, JP;
Abstract
A golf club shaft formed by winding prepregs, made of reinforced fibers impregnated with a thermosetting resin, into layers and thermally curing the prepregs. The golf club shaft includes a 90-degree prepreg, a fiber direction of which is orthogonal to a longitudinal direction of the golf club shaft and which is provided on each of an inner layer side and an outer layer side, and the golf club shaft satisfies the following condition: 2.0≦D/D≦4.0, wherein Ddesignates a thickness of the inner-layer-side 90-degree prepreg, and Ddesignates a thickness of the outer-layer-side 90-degree prepreg.