Golf club shaft, golf putter shaft, golf club grip, golf club set and golf club

Abstract

The stiffness of the golf wood shaft is 210 to 240 CPM (±5 cpm), the tip diameter is 8.4 to 9.4 mm, the weight is 40 to 70 g (±3 g), the torque measurement at the shaft tip is adjusted to 8 to 6 degrees (±0.2 deg), and the position of the center of gravity point of the shaft is set at 55% to 85% (±5 mm) from the tip. If possible, with an indication of the center of gravity point of the shaft body or grip body, it is possible to manufacture a golf club that is easy to swing with a butt-heavy center of gravity. Furthermore, it is possible to propose a golf club that is kind and easy not only for professionals but also for amateur golfers.

1 . A golf club shaft characterized in that a tip diameter of the golf club shaft is 8.4 to 9.4 mm, a weight of the golf club shaft is 40 to 100 g (±3 g), and a position of the center of gravity point is at 55% to 85% (±5 mm) from a tip of the golf club shaft. 
     
     
         2 . The golf club shaft according to  claim 1 , the golf club shaft is a wood club shaft, characterized in that a stiffness of the golf club shaft is 210 to 240 CPM (±5 cpm) and the weight of the golf club shaft is 40 to 70 g (±3 g). 
     
     
         3 . The golf club shaft according to  claim 1 , the golf club shaft is a wood club shaft, characterized in that the stiffness of the golf club shaft is 240 to 260 CPM (±5 cpm) and the weight of the golf club shaft is 50 to 80 g (±3 g). 
     
     
         4 . The golf club shaft according to  claim 1 , the golf club shaft is a wood club shaft, characterized in that the stiffness of the golf club shaft is 260 to 270 CPM (±5 cpm) and the weight of the golf club shaft is 60 to 100 g (±3 g). 
     
     
         5 . The golf club shaft according to  claim 1 , the golf club shaft is an iron club shaft, characterized in that the stiffness of the golf club shaft is 210 to 230 CPM (±5 cpm), the tip diameter of the golf club shaft is 9.4 mm, and the weight of the golf club shaft is 50 to 70 g (±3 g). 
     
     
         6 . The golf club shaft according to  claim 1 , the golf club shaft is an iron club shaft, characterized in that the stiffness of the golf club shaft is 220 to 240 CPM (±5 cpm), the tip diameter of the golf club shaft is 9.4 mm, and the weight of the golf club shaft is 60 to 90 g (±3 g). 
     
     
         7 . The golf club shaft according to  claim 1 , the golf club shaft is an iron club shaft, characterized in that the stiffness of the golf club shaft is 230 to 260 CPM (±5 cpm), the tip diameter of the golf club shaft is 9.4 mm, and the weight of the golf club shaft is 70 to 120 g (±3 g). 
     
     
         8 . The golf club shaft according to  claim 1 , the golf club shaft is a putter shaft, characterized in that the tip diameter of the golf club shaft is 9.0 to 9.4 mm and the weight of the golf club shaft is 80 to 140 g (±3 g). 
     
     
         9 . The golf club shaft according to  claim 1 , characterized in that electroless plating is applied on the golf club shaft. 
     
     
         10 . The golf club shaft according to  claim 9 , characterized in that the electric plating is copper plating. 
     
     
         11 . The golf club shaft according to  claim 9 , characterized in that the electric plating is chrome plating. 
     
     
         12 . The golf club shaft according to  claim 9 , characterized in that ion plating processing is further applied on a surface of the golf club shaft.