Golf club heads with cavities and related methods

Abstract

Embodiments of golf club heads with cavities and methods to manufacture golf club heads with cavities are generally described herein. In some embodiments, a golf club head comprises a body. The body comprises a strikeface, a backside of the strikeface, a heel region, a toe region opposite the heel region, a sole, a first cavity at the backside of the strikeface, a rear portion opposite the strikeface, and a second cavity at the rear portion. In many embodiments, the golf club head further comprises a cap closing off the second cavity. Other embodiments may be described and claimed.

1 . A golf club head comprising:
 a body comprising:
 a strikeface; 
 a backside of the strikeface; 
 a heel region; 
 a toe region opposite the heel region; 
 a sole; 
 a first cavity at the backside of the strikeface; 
 a rear portion opposite the strikeface; 
 and 
 a second cavity at the rear portion; 
   and   a cap at least partially at the sole and closing off the second cavity, the cap comprising a cap density higher than a body density of the body;   wherein:
 at least a portion of the second cavity is hollow when the cap closes off the second cavity. 
   
     
     
         2 . The golf club head of  claim 1 , wherein:
 the first cavity is configured to receive an insert.   
     
     
         3 . The golf club head of  claim 1 , wherein:
 a length of the first cavity is substantially parallel to the strikeface and forward of the rear portion.   
     
     
         4 . The golf club head of  claim 1 , wherein:
 the second cavity extends from the heel to the toe and is substantially parallel to the strikeface.   
     
     
         5 . The golf club head of  claim 1 , wherein:
 the cap is at least partially at the toe region of the golf club head.   
     
     
         6 . The golf club head of  claim 1 , wherein:
 a rear portion height of the rear portion is equal to approximately ¼ to approximately ½ of a strikeface height of the strikeface;   and   the second cavity is located only at the rear portion.   
     
     
         7 . The golf club head of  claim 1 , wherein:
 the cap weighs approximately 3 g to approximately 30 g.   
     
     
         8 . The golf club head of  claim 1 , wherein:
 the cap comprises a cap material comprising tungsten.   
     
     
         9 . The golf club head of  claim 1 , wherein:
 the cap is substantially flush with the body.   
     
     
         10 . The golf club head of  claim 1 , wherein:
 the golf club head is an iron-type club head;   and   at least a portion of the first cavity is located between the strikeface and the second cavity.   
     
     
         11 . A golf club comprising:
 a shaft;   a grip;   and   a golf club head comprising:
 a body comprising:
 a strikeface; 
 a backside of the strikeface; 
 a heel region; 
 a toe region opposite the heel region; 
 a sole; 
 a first cavity at the backside of the strikeface; 
 a rear portion opposite the strikeface; 
 and 
 a second cavity at the rear portion; and 
 
   a cap at least partially at the sole and closing off the second cavity, the cap comprising a cap density higher than a body density of the body;   wherein:
 at least a portion of the second cavity is hollow when the cap closes off the second cavity. 
   
     
     
         12 . The golf club of  claim 11 , wherein:
 the first cavity is configured to receive an insert.   
     
     
         13 . The golf club of  claim 11 , wherein:
 a length of the first cavity is substantially parallel to the strikeface and forward of the rear portion.   
     
     
         14 . The golf club of  claim 11 , wherein:
 the second cavity extends from the heel to the toe and is substantially parallel to the strikeface.   
     
     
         15 . The golf club of  claim 11 , wherein:
 the cap is at least partially at the toe region of the golf club head.   
     
     
         16 . The golf club of  claim 11 , wherein:
 a rear portion height of the rear portion is equal to approximately ¼ to approximately ½ of a strikeface height of the strikeface;   and   the second cavity is located only at the rear portion.   
     
     
         17 . The golf club of  claim 11 , wherein:
 the cap weighs approximately 3 g to approximately 30 g.   
     
     
         18 . The golf club of  claim 11 , wherein:
 the cap comprises a cap material comprising tungsten.   
     
     
         19 . The golf club of  claim 11 , wherein:
 the cap is substantially flush with the body.   
     
     
         20 . The golf club of  claim 11 , wherein:
 the golf club head is an iron-type club head;   and   at least a portion of the first cavity is located between the strikeface and the second cavity.   
     
     
         21 . A method for manufacturing a golf club head, comprising:
 forming a body from a first material having a first density, the body having:
 a strikeface; 
 a backside of the strikeface; 
 a heel region; 
 a toe region opposite the heel region; 
 a sole; 
 a first cavity at the backside of the strikeface; 
 and 
 a rear portion opposite the strikeface; 
   forming a second cavity at the rear portion;   and   affixing a cap at the second cavity and at least partially at the sole to close off the second cavity   wherein:
 at least a portion of the second cavity is hollow when the cap closes off the second cavity; and 
 the cap comprises a cap density higher than a body density of the body. 
   
     
     
         22 . The method for manufacturing the golf club head of  claim 21 , wherein:
 forming the second cavity further comprises:
 removing an inner rear portion material from the rear portion, wherein the inner rear portion material is removed from an opening in the toe. 
   
     
     
         23 . The method for manufacturing the golf club head of  claim 22 , wherein:
 removing the inner rear portion material from the rear portion comprises removing approximately 8 g to approximately 15 g from the rear portion.   
     
     
         24 . The method for manufacturing the golf club head of  claim 21 , wherein:
 the first cavity is configured to receive an insert.   
     
     
         25 . The method for manufacturing the golf club head of  claim 21 , wherein:
 a length of the first cavity is substantially parallel to the strikeface and forward of the rear portion.   
     
     
         26 . The method for manufacturing the golf club head of  claim 21 , wherein:
 forming the second cavity further comprises extending the second cavity from the heel to the toe;   and   the second cavity is substantially parallel to the strikeface.   
     
     
         27 . The method for manufacturing the golf club head of  claim 21 , wherein:
 the cap is at least partially at the toe region of the golf club head.   
     
     
         28 . The method for manufacturing the golf club head of  claim 21 , wherein:
 a rear portion height of the rear portion is equal to approximately ¼ to approximately ½ of a strikeface height of the strikeface;   and   the second cavity is located only at the rear portion.   
     
     
         29 . The method for manufacturing the golf club head of  claim 21 , wherein:
 the cap weighs approximately 3 g to approximately 30 g.   
     
     
         30 . The method for manufacturing the golf club head of  claim 21 , wherein:
 the cap comprises a cap material comprising tungsten.   
     
     
         31 . The method for manufacturing the golf club head of  claim 21 , wherein:
 the cap is substantially flush with the body.   
     
     
         32 . The method for manufacturing the golf club head of  claim 21 , wherein:
 the golf club head is an iron-type club head;   and   at least a portion of the first cavity is located between the strikeface and the second cavity.   
     
     
         33 . The golf club head of  claim 4 , wherein:
 a length of the second cavity is approximately 1.7 inches to approximately 2.1 inches, measured from the heel to the toe.   
     
     
         34 . The golf club of  claim 14 , wherein:
 a length of the second cavity is approximately 1.7 inches to approximately 2.1 inches, measured from the heel to the toe.   
     
     
         35 . The method for manufacturing the golf club head of  claim 26 , wherein:
 a length of the second cavity is approximately 1.7 inches to approximately 2.1 inches, measured from the heel to the toe.