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:
Sep. 28, 2010
Filed:
Jul. 22, 2008
Tomio Kumamoto, Hyogo, JP;
Tomio Kumamoto, Hyogo, JP;
SRI Sports Limited, Hyogo, JP;
Abstract
A golf club shaft () having a weight not less than 30 g nor more than 60 g. The golf club shaft () includes a bias layer (B) composed of a prepreg whose reinforcing fibers have an orientation angle of not less than ±10° nor more than 80° to an axis of the golf club shaft () and a straight layers (Athrough A) each composed of a prepreg whose reinforcing fibers have an orientation angle within 0°±10° to the axis of the golf club shaft (). At least one partial reinforcing hoop layer whose reinforcing fibers have an orientation angle of within 90°±10° to the axis of the golf club shaft () is disposed in only an important reinforcing region in a range from a point (P) spaced at 15% of a full length (L) of the golf club shaft () from a grip-side butt () thereof to a point (Q) spaced at 45% of the full length (L) of the golf club shaft () from the grip-side butt () thereof.