US2005221910A1PendingUtilityA1

Graphite-steel golf club shaft

42
Individually held — no corporate assignee on recordPriority: Apr 6, 2004Filed: Apr 6, 2004Published: Oct 6, 2005
Est. expiryApr 6, 2024(expired)· nominal 20-yr term from priority
Inventors:Don Kyu Han
A63B 2209/00A63B 60/48A63B 60/10A63B 60/08A63B 60/06A63B 53/10A63B 60/00A63B 60/0081A63B 53/12
42
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Claims

Abstract

A golf club shaft is designed to be strong, light-weighted and flexible and to fit individual custom needs. The shaft is made of both graphite and steel. The inner layer of the golf club shaft could be steel or graphite, outer layer of the golf club shaft also could be steel or graphite, any portion of the shaft could be made of steel only or graphite only, and/or the ratio to the graphite and steel could vary depending on the need of the golfers. Steel layer could be made of coiled steel wire springs.

Claims

exact text as granted — not AI-modified
1 . A golf club shaft, the improvement comprising: 
 an inner layer,    an outer layer, and    means to connecting said inner layer and said outer layer.    
   
   
       2 . The golf club shaft according to  claim 1  wherein said inner layer is made of steel and said outer layer is made of graphite.  
   
   
       3 . The golf club shaft according to  claim 1  wherein said inner layer is made of graphite and said outer layer is made of steel.  
   
   
       4 . The golf club shaft according to  claim 1  wherein the connecting face of said inner layer has dents.  
   
   
       5 . The golf club shaft according to  claim 1  wherein said inner layer has holes.  
   
   
       6 . The golf club shaft according to  claim 1  wherein the connecting face of said outer layer has dents.  
   
   
       7 . The golf club shaft according to  claim 1  wherein said outer layer has holes.  
   
   
       8 . The golf club shaft according to  claim 1  wherein any part of said golf club shaft comprising said outer layer only.

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