US2013143689A1PendingUtilityA1

Golf club shaft and golf club

Assignee: BRIDGESTONE SPORTS CO LTDPriority: Dec 2, 2011Filed: Nov 29, 2012Published: Jun 6, 2013
Est. expiryDec 2, 2031(~5.3 yrs left)· nominal 20-yr term from priority
A63B 60/00A63B 2209/023A63B 53/10
46
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Claims

Abstract

According to an aspect of this invention, there is provided a golf club shaft including a prepreg containing a carbon fiber, wherein the prepreg is winded and cured, and a winding thickness of the prepreg on a striking face is larger than a winding thickness of the prepreg on any other portion.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A golf club shaft comprising
 a prepreg containing a carbon fiber, wherein   the prepreg is winded and cured, and a winding thickness of the prepreg on a striking face is larger than a winding thickness of the prepreg on any other portion.   
     
     
         2 . The golf club shaft according to  claim 1 , wherein:
 the winding thickness of the prepreg on the striking face is largest;   the winding thickness of the prepreg on a head end is second largest; and   the winding thickness of the prepreg in an intermediate portion between the striking face and the head end is smallest.   
     
     
         3 . The golf club shaft according to  claim 2 , wherein
 the thickness of a rearmost end on the striking face is larger than an average thickness of the intermediate portion by 0.1 mm to 0.4 mm.   
     
     
         4 . The golf club shaft according to  claim 1 , wherein
 the striking face is provided in a range of 15% to 45% of an entire length of the shaft from an end of the striking face.   
     
     
         5 . The golf club shaft according to  claim 1 , wherein:
 the golf club shaft is a golf club shaft for a wood club; and   a position of center of gravity is present in a range of 52% to 57% of an entire length of the shaft from an end of the head end.   
     
     
         6 . A golf club comprising:
 a golf club shaft comprising a prepreg containing a carbon fiber; and   a club head connected with the golf club, wherein   the prepreg is winded and cured, and a winding thickness of the prepreg on a striking face is larger than a winding thickness of the prepreg on any other portion.

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