Weighted iron set

Abstract

The present invention is direct to a set of golf clubs comprising long irons, mid-irons and short irons. The invention contemplates the use of titanium or steel for the main body portion and a tungsten weight member coupled to the toe and a tungsten heel weight member coupled in a hosel cavity.

What is claimed is: 
     
         1 . A golf club comprising:
 a club head having a club head mass;   a y-axis extending vertically through a face center of the club head and a Moment of Inertia about the y-axis,   a body made of steel comprising a heel, a toe, a topline, a sole, a hosel that defines a shaft axis, and a back wall,   a face insert formed of steel and having a face insert mass, the face insert being welded to the body to form a hollow cavity between the face insert and the back wall;   
       a weight member formed of tungsten and is coupled in a lower portion of the hollow cavity wherein the sole has a sole width and the face insert includes a face insert sole portion that extends from a leading edge of the face insert toward the back wall a distance in front-to-back direction that is at least 25% of the sole width. 
     
     
         2 . The golf club of  claim 1 , wherein the club head comprises a heel weight member that comprises between 5% and 10% of the club head mass. 
     
     
         3 . The golf club of  claim 1 , wherein the Moment of Inertia about the y-axis is greater than 230 kg-mm 2 . 
     
     
         4 . The golf club of  claim 1 , wherein the Moment of Inertia about the y-axis is greater than 260 kg-mm 2 . 
     
     
         5 . The golf club of  claim 1 , wherein the club head has a Moment of Inertia about the shaft axis that is between 650 kg-mm 2  and 700 kg-mm 2 . 
     
     
         6 . The golf club of  claim 1 , wherein the club head has a center of gravity in a y direction from a ground surface, CGy, that is less than about 18 mm. 
     
     
         7 . The golf club of  claim 1 , wherein the club head has a center of gravity depth from the face center toward the back wall, CGz, that is greater than 6 mm. 
     
     
         8 . The golf club of  claim 1 , wherein the face insert has a perimeter region surrounding a center that is thicker than the perimeter region and a smooth transition zone connects the center to the perimeter region. 
     
     
         9 . The golf club of  claim 1 , wherein the club head further comprises a medallion that covers an aperture in the back wall. 
     
     
         10 . A golf club comprising:
 a club head having a club head mass;   a y-axis extending vertically through a face center of the club head and a Moment of Inertia about the y-axis,   a body made of steel comprising a heel, a toe, a topline, a sole, a hosel defining a shaft axis, and a back wall,   a face insert formed of steel and having a face insert mass, the face insert being welded to the body to form a hollow cavity between the face insert and the back wall;   a weight member formed of tungsten and is coupled in a lower portion of the hollow cavity and has a weight member mass that comprises greater than 25% of the club head mass; and   
       wherein the sole has a sole width and the face insert includes a face insert sole portion that extends from a leading edge of the face insert toward the back wall a distance in front-to-back direction that is at least 25% of the sole width. 
     
     
         11 . The golf club of  claim 10 , wherein the club head has a Moment of Inertia about the shaft axis that is between 650 kg-mm 2  and 700 kg-mm 2 . 
     
     
         12 . The golf club of  claim 10 , wherein the club head has a center of gravity in a y direction from a ground surface, CGy, that is less than about 18 mm. 
     
     
         13 . The golf club of  claim 10 , wherein the club head has a center of gravity depth from the face center toward the back wall, CGz, that is greater than 6 mm.