US2004009824A1PendingUtilityA1

Golf club with weight device

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Assignee: SHAW CHING-SONGPriority: Jul 11, 2002Filed: Jul 11, 2002Published: Jan 15, 2004
Est. expiryJul 11, 2022(expired)· nominal 20-yr term from priority
Inventors:Ching-Song Shaw
A63B 49/00A63B 60/10A63B 60/08A63B 60/06A63B 60/04A63B 53/00A63B 53/10A63B 53/12
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PatentIndex Score
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Claims

Abstract

A golf club comprises a shaft, a head and a weight device. The shaft has a tip end, a butt end and a tunnel therein. The head is secured to the shaft at the tip end thereof. The weight device is installed in the tunnel of the shaft for free sliding. The weight device is changeable in shape, such as metal sands, metal balls and liquid etc., so that the center of gravity of the weight device can close to the tip end and the butt end of the shaft as possible when backswing and downswing.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A golf club, comprising: 
 a shaft having a tunnel therein;    a head secured to a tip end of the shaft, and    a weight device installed in said tunnel of said shaft for free sliding;    said weight device is changeable in shape so that the center of gravity of said weight device can close to the opposite ends of said tunnel as possible when backswing and downswing.    
     
     
         2 . The golf club as defined in  claim 1 , wherein said weight device is metal sands, each of which is smaller than any diameter of said tunnel in cross-section.  
     
     
         3 . The golf club as defined in  claim 1 , wherein said weight device is metal balls, each of which is smaller than any diameter of said tunnel in cross-section.  
     
     
         4 . The golf club as defined in  claim 3 , wherein said weight device is liquid.  
     
     
         5 . The golf club as defined in  claim 1 , wherein said weight device is received in a bag which is installed in said tunnel.  
     
     
         6 . The golf club as defined in  claim 1 , wherein said shaft is provided with two buffer members in said tunnel respectively at the opposite ends thereof.  
     
     
         7 . A golf club, comprising: 
 a shaft having a tunnel therein;    a head secured to a tip end of the shaft, and    a weight device installed in said tunnel of said shaft for free sliding;    wherein said weight device has at least a block which is smaller than any diameter of said tunnel in cross-section.

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