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:
Oct. 02, 2018
Filed:
May. 01, 2017
Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;
Takashi Nakano, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-shi, Hyogo, JP;
Abstract
A golf clubincludes a shafthaving a tip end Tp and a butt end Bt, a headand a grip. The shaftincludes a plurality of carbon fiber reinforced layers. The layers include a straight layer, a bias layer and a hoop layer. When a weight of the hoop layer is defined as WF, and a shaft weight is defined as WS, WF/WS is 0.18 or greater. The shaft weight WS is 42 g or less. In the shaft, a point 200 mm distant from the butt end Bt is defined as P1, and a region between the point P1 and the butt end Bt is defined as a specific butt region Rb. A weight of the hoop layer in the specific butt region Rb is defined as WFb, and a shaft weight in the specific butt region Rb is defined as WSb.