Bridge weight for metal wood golf club

Abstract

A metallic golf club head includes a body and impact face defining a cavity therein, and a hosel for attachment to a shaft. The body includes a sole portion having a pair of insert members, preferably in the shape of triangular wedges, which protrude through into the cavity. The sole portion includes a hexahedron shaped bridge weight spanning across and connecting the members and creating an underpass therein. The bridge weight of a size and height for altering the weight distribution and therefore the center of gravity of the club head without impeding the acoustical properties of the club head.

What is claimed is:  
     
         1 . A metal wood golf club head adapted for attachment to a shaft comprising: 
 a substantially hollow body welded to an impact face to create a cavity therein;    the body including a sole portion;    a first insert and a second insert, each protruding from the sole portion into the cavity, inserts having first and second interior surfaces respectively, the surfaces generally parallel and in a raised relationship to the sole portion; and    a bridge weight having opposing ends, each end integral with one of the interior surfaces, the bridge weight having a longitudinal axis spanning across the inserts to define a hollow underpass therein.    
     
     
         2 . The club head according to  claim 1 , wherein the bridge weight is integrally with the body in a one-piece casting.  
     
     
         3 . The club head according to  claim 1 , wherein the bridge weight is welded to the interior surfaces of the inserts.  
     
     
         4 . The golf club head of  claim 1 , wherein the hollow cast body and the impact face are made substantially of titanium.  
     
     
         5 . The golf club head of  claim 1 , wherein the hollow cast body and the impact face are made substantially of titanium based alloy.  
     
     
         6 . The golf club head of  claim 1 , wherein the bridge weight has a generally hexahedron shape.  
     
     
         7 . The golf club head of  claim 1 , wherein the longitudinal axis of the bridge weight is generally parallel to the impact face.  
     
     
         8 . The golf club head of  claim 1 , wherein the width of the bridge weight is about 1.0 to 1.5 inches.  
     
     
         9 . The golf club head of  claim 1 , wherein the width of the bridge weight is about 1.25 inches.  
     
     
         10 . The golf club head of  claim 1 , wherein the depth of the bridge weight is about 0.25 inches to about 1.00 inches.  
     
     
         11 . The golf club head of  claim 1 , wherein the depth of the bridge weight is about 0.50 inches.  
     
     
         12 . The golf club head of  claim 1 , wherein the weight of the bridge weight is about 0.1 grams to about 28 grams.  
     
     
         13 . The golf club head of  claim 1 , wherein the weight of the bridge weight is about 15 to about 20 grams.  
     
     
         14 . The golf club head of  claim 1 , wherein the center of gravity of the bridge weight is about 1.0 inch to 2.5 inches from the hosel centerline.  
     
     
         15 . The golf club head of  claim 1 , wherein the center of gravity of the bridge weight is about 1.25 inches from the hosel centerline.