Metal Wood Club

Abstract

A golf club head is provided with a body that has an address position with a zero degree bounce portion on the sole and a center sole position with a multi-relief surface of the sole having a negative bounce portion. The negative bounce portion may comprise a negative 0.5 to a negative 4.0 degree surface. In one embodiment, the multi-relief surface may comprise the negative bounce portion and a cutaway portion extending to the back of the sole, which may have a depth of about 0.05 to 0.5 inch from a regular sole surface. In another embodiment, the golf club head includes a weight system to adjust the center of gravity. In one embodiment, the weight system is a tube having a weight at one end that may be inserted into the golf club head to move the center of gravity at least forward and backward within 6 mm and up and down within 6 mm. Preferably, the tube is angled downward toward the face by at least 3 degrees.

We claim: 
     
         1 . A golf club head, the golf club head comprising:
 a body having a face, a sole, a crown, and a skirt joining the face, sole and crown, the body having a center of gravity;   the body having a coordinate system with an x-axis located horizontal to the club face, a y-axis located vertical to the club face, and a z-axis located through the club face,   a weight system for the club head, wherein the center of gravity is adjustable along both the z-axis and the x-axis.   
     
     
         2 . The golf club head of  claim 1 , wherein the weight system further comprises a cavity, wherein the cavity is offset from the x-axis. 
     
     
         3 . The golf club head of  claim 2 , wherein the cavity is offset from the x-axis by 0 to 90 degrees. 
     
     
         4 . The golf club head of  claim 2 , wherein the cavity for placement within the club head is formed within a plane defined by the y-axis and the z-axis to adjust the center of gravity, and wherein the tube is angled downward toward the face of the club head by about 3 to about 7 degrees from the z-axis. 
     
     
         5 . The golf club head of  claim 4 , wherein the center of gravity is movable within a 6 mm distance along the z-axis. 
     
     
         6 . The golf club head of  claim 5 , wherein the center of gravity is movable within a 4 mm distance along the z-axis. 
     
     
         7 . The golf club head of  claim 4 , wherein the center of gravity is movable within a 6 mm distance along the y-axis. 
     
     
         8 . The golf club head of  claim 7 , wherein the center of gravity is movable within 12 mm distance along the y-axis. 
     
     
         9 . The golf club head of  claim 4 , wherein the center of gravity is movable within a 2 mm distance along the x-axis. 
     
     
         10 . The golf club head of  claim 9 , wherein the center of gravity is movable within a 0.5 mm distance along the x-axis. 
     
     
         11 . A golf club head, the golf club head comprising:
 a body having a face, a sole, a crown, and a skirt joining the face, sole and crown, the body having a center of gravity;   the body having a coordinate system with an x-axis located horizontal to the club face, a y-axis located vertical to the club face, and a z-axis located through the club face,   a weight system for the club head wherein the weight system further comprises a cavity, wherein the cavity is offset from the x-axis by 0 to 90 degrees.   
     
     
         12 . The golf club head of  claim 11 , wherein the weight system comprises two or more cavities all placed along the same plane, offset from the x axis by 0 to 90 degrees. 
     
     
         13 . The golf club head of  claim 11 , wherein the cavities mimic an angle of an insert to connect the cavities. 
     
     
         14 . The golf club head of  claim 11 , wherein the insert is a tube. 
     
     
         15 . The golf club head of  claim 14 , wherein multiple inserts varying in weight may be placed within the tube at various positions to move the center of gravity to the desired location. 
     
     
         16 . The golf club of  claim 15 , wherein the tube is flappable, such that the weight is moveable to the other end of the club head to move the center of gravity for a desired different ball flight.