Low profile driver type golf club head

Abstract

A metal wood golf club head of hollow construction incorporating a center of gravity (CG) depth of at least 40 mm, 1.57″, or greater, as measured rearwardly from the leading edge of the striking face, in combination with a shaft bore in the club head having a 0.370 bore diameter. The vertical height of the metal wood is half the club's breadth dimension between the front and rear of the club head and the vertical CG location is no greater than half the CG depth dimension. A bounce angle is incorporated into the leading portion of the bottom sole of the club head.

What is claimed is: 
     
         1 . A driver type golf club head including a club head body formed of a top crown, heel, toe, side surfaces, rear surface, bottom sole and ball striking face where the improvement comprises:
 in combination, a shaft opening in said club head having an outside diameter of at least 0.370 inches, (9.4 mm), to accommodate a golf shaft; and, a center of gravity location of the club head being at least 40 mm rearward behind the leading edge of said striking face.   
     
     
         2 . The golf club of  claim 1  wherein the height of the CG location above the bottom sole is no more than half of the distance that the CG is located behind the leading edge of the said ball striking face. 
     
     
         3 . The golf club of  claim 1  including a hosel on an upper surface of said club head for connection to a golf shaft; said hosel having the shaft opening in the form of a cylindrical bore at least 0.370 inches diameter complementary with an outside diameter of the shaft. 
     
     
         4 . The golf club head of  claim 1  further including a bounce area on said bottom sole extending rearwardly from said leading edge at an angle of at least three degrees below said bottom sole. 
     
     
         5 . The golf club head of  claim 1  further defined by the CG location being at least 45 mm behind said face. 
     
     
         6 . A metal wood, driver type, golf club head including a hosel for connection with a golf shaft, a top crown, heel, toe, side surfaces, bottom sole, rear surface, a ball striking face between said top crown and said bottom sole, and a leading edge at the interface of said ball striking face and said bottom sole; wherein the improvement comprises:
 a shaft connection bore in said hosel having a diameter of at least 0.370 inches (9.4 mm); said shaft connection bore being complementary with in order to receive and locate an outside diameter of the golf shaft;   said club head further defined by a center of gravity location at least 40 mm behind the leading edge of said striking face; a vertical height of the center of gravity location between the top crown and bottom sole being a no greater distance from the bottom sole than half of the distance that the CG is located behind the leading edge of the striking face;   and, a bounce area on said bottom sole extending rearwardly from said leading edge at an angle of at least three degrees below said bottom sole.