Golf club with vibration dampening pocket

Abstract

A golf club head is disclosed. The golf club head has a body member and a face insert formed of different materials. The body material is relatively soft and ductile to allow the club to be customized, and the face insert member is relatively hard and wear resistant to ensure that the face groove geometry remains substantially unaltered through use. A bimetallic face insert may be used. The outer layer is hard and wear resistant, and the inner layer is softer and may include copper. The outer layer is thin, and the inner layer may be seen in the bottoms of the face grooves. A cavity may be provided underneath the face insert. This cavity may be either empty or filled, such as with a dampening member or a weight member.

1 .- 27 . (canceled) 
     
     
         28 . A golf club head, comprising:
 a body defining a front surface, a top line, a sole, a back, a heel, and a toe, and comprising a first cavity located in the front surface between the heel and the toe;   an insert positioned within the first cavity, wherein the insert comprises an outer metallic material and an inner metallic material coupled together, wherein the outer metallic material is harder than the inner metallic material, wherein the inner metallic material comprises copper, wherein the insert comprises grooves formed in the outer metallic material and extending into the inner metallic material, wherein the grooves have a width that changes less than approximately 40% upon blast testing, and wherein the outer metallic material has a thickness less than approximately 0.5 mm; and   a second cavity located within the first cavity.   
     
     
         29 . The golf club head of  claim 28 , further comprising a second insert positioned within the second cavity. 
     
     
         30 . The golf club head of  claim 29 , wherein the second insert is selected from the group consisting of an elastomer, a polymer, an ionomer, a foam, a movable media, and combinations thereof. 
     
     
         31 . The golf club head of  claim 28 , wherein the body includes at least one hole in the back of the club head to the second cavity. 
     
     
         32 . The golf club head of  claim 28 , further comprising a sole insert coupled to the body. 
     
     
         33 . The golf club head of  claim 28 , wherein the body is formed of a material that is softer than the outer metallic material. 
     
     
         34 . A golf club head, comprising:
 a body defining a front surface, a top line, a sole, a back, a heel, and a toe, and comprising:
 a first cavity located in the front surface between the heel and the toe; 
 an insert positioned within the first cavity; 
 a second cavity located within the first cavity; and 
 at least one hole in the back of the club head extending to the second cavity. 
   
     
     
         35 . The golf club head of  claim 34 , wherein the second cavity comprises an injectable dampening material. 
     
     
         36 . The golf club head of  claim 35 , wherein the dampening material comprises an elastomer. 
     
     
         37 . The golf club head of  claim 34 , wherein the insert comprises an outer metallic material and an inner metallic material coupled together. 
     
     
         38 . The golf club head of  claim 37 , wherein the insert further comprises grooves formed in the outer metallic material that extend into the inner metallic material. 
     
     
         39 . The golf club head of  claim 34 , wherein the at least one hole comprises a first material. 
     
     
         40 . The golf club head of  claim 39 , wherein the second cavity comprises a second material. 
     
     
         41 . The golf club head of  claim 40 , wherein the second material is different from the first material. 
     
     
         42 . The golf club head of  claim 40 , wherein the first and second materials are the same. 
     
     
         43 . A golf club head, comprising:
 a body defining a front surface, a top line, a sole, a back, a heel, and a toe, and comprising a first cavity located in the front surface between the heel and the toe, wherein the body is formed of a first material;   an insert positioned within the first cavity, wherein the insert comprises a second material, wherein the second material is metallic and harder than the first material, wherein the insert comprises grooves formed in the second material, wherein the grooves have a width that changes less than approximately 40% upon blast testing, and wherein the second material has a thickness less than approximately 0.5 mm;   a second cavity located within the first cavity; and   at least one hole in the back of the club head extending to the second cavity.   
     
     
         44 . The golf club head of  claim 43 , wherein the second cavity is smaller than the first cavity. 
     
     
         45 . The golf club head of  claim 43 , wherein the body and the insert create an enclosed volume within the second cavity. 
     
     
         46 . The golf club head of  claim 45 , wherein the enclosed volume is filled with nn injectable dampening material. 
     
     
         47 . The golf club head of  claim 46 , wherein the injectable dampening material is an elastomer.