Sole with a Shaft Adjusting Hole for a Gold Club Head

Abstract

A sole with a shaft adjusting hole for a golf club head includes a recessed portion adjacent to a striking portion and a root of the gold club head. The recessed portion includes a shaft adjusting hole. The sole of the golf club head is a plate separate from the striking portion and a crown of the golf club head. The shaft adjusting hole includes a bottom wall and a peripheral wall extending upward from the bottom wall. The peripheral wall includes a plurality of inclined plane faces.

What is claimed is: 
     
         1 . A sole with a shaft adjusting hole for a golf club head, with the sole comprising a recessed portion adjacent to a striking portion and a root of the gold club head, with the recessed portion including a shaft adjusting hole, with the sole of the golf club head being a plate separate from the striking portion and a crown of the golf club head, with the shaft adjusting hole including a bottom wall and a peripheral wall extending upward from the bottom wall, and with the peripheral wall including a plurality of inclined plane faces. 
     
     
         2 . The sole with a shaft adjusting hole for a golf club head as claimed in  claim 1 , with a ledge formed between the root and one of the plurality of inclined plane faces adjacent to the root, and with the shaft adjusting hole being parallel to a tubular portion of the golf club head. 
     
     
         3 . The sole with a shaft adjusting hole for a golf club head as claimed in  claim 2 , with the ledge having a width not greater than 2 mm, and with a vertical spacing between the ledge and the bottom wall of the shaft adjusting hole not larger than 10 mm. 
     
     
         4 . The sole with a shaft adjusting hole for a golf club head as claimed in  claim 1 , with the shaft adjusting hole having a diameter not smaller than 10 mm. 
     
     
         5 . The sole with a shaft adjusting hole for a golf club head as claimed in  claim 1 , with an angle between one of the plurality of inclined plane faces adjacent to a toe of the golf club head and the bottom wall being not smaller than 98 degrees, and with an angle between the inclined plane face adjacent to the ledge and the bottom wall being not smaller than 98 degrees. 
     
     
         6 . The sole with a shaft adjusting hole for a golf club head as claimed in  claim 1 , with an angle between one of the plurality of inclined plane faces adjacent to the striking portion and the bottom wall of the shaft adjusting hole being not smaller than 98 degrees. 
     
     
         7 . The sole with a shaft adjusting hole for a golf club head as claimed in  claim 1 , with an angle between one of the plurality of inclined faces adjacent to a rear of the golf club head and the bottom wall of the shaft adjusting hole being not smaller than 100 degrees.