Golf clubs and golf club sets

Abstract

A golf club set in which the weight balance of club shafts is optimized for each individual club. The weight balance at the grip-end of the shaft of each of the individual golf clubs increases as the corresponding loft angles of each of the individual golf clubs increase.

What is claimed:  
     
         1 . A golf club set comprising a plurality of individual golf clubs having progressively increasing loft angles, each golf club of the set comprising: 
 a grip for grasping the club;    a head for hitting a ball; and    a shaft connected between the grip and head, each shaft having a length, a grip-end and a head-end,    wherein each shaft has a weight balance at its grip-end thereof which increases from club to club as the corresponding loft angles of each of the respective clubs increase.    
     
     
         2 . A golf club set according to    claim 1   , wherein the weight balance of the shaft of each club is controlled by regulating a weight ratio between a first and a second region of each shaft, which first and second regions divide the shafts lengthwise into two portions having length ratios of 1 to 1.6 from the grip-end to the head-end thereof.  
     
     
         3 . A golf club set according to    claim 2   , wherein a weight ratio between the first and second regions changes in a range of 1:2 to 1:1 as the corresponding loft angles of each of the individual golf clubs increase.  
     
     
         4 . A golf club set according to    claim 1   , wherein the shaft of each club includes a core and the weight balance of the shafts is regulated by controlling the thickness of the cores of the shafts.  
     
     
         5 . A golf club set according to    claim 2   , wherein the shaft of each club includes a core and the weight balance of the shafts is regulated by controlling the thickness of the cores of the shafts.  
     
     
         6 . A golf club comprising: 
 a grip for grasping the golf club;    a head for hitting a ball, the head having a loft angle;    a shaft connected between the grip and head, the shaft having a grip-end and a head-end; and    a weight provided at the grip-end of the shaft which weight provides the shaft with a desired weight balance, wherein the mass of the weight is proportional to the loft angle.    
     
     
         7 . A golf club according to    claim 6   , wherein the weight balance of the shaft is controlled by regulating a weight ratio between a first and a second region of the shaft, which first and second regions divide the shaft lengthwise into two portions having length ratios of 1 to 1.6 from the grip-end to the head-end thereof.  
     
     
         8 . A golf club according to    claim 7   , wherein a weight ratio between the first and second regions is a range of 1:2 to 1:1 and varies in this range proportionally to the loft angle.  
     
     
         9 . A golf club according to    claim 6   , wherein the shaft has a core and the weight balance of the shaft is regulated by controlling the thickness of the core.