Golf club heads comprising a variable face thickness

Abstract

Described herein are embodiments of a variable face thickness strike face for a golf club. The golf club comprises a first transition region wherein the first transition region tapers the strike face thickness from a central region to either an intermediate region or an outer region. The first transition region may extend more in the high heel quadrant of the strike face than other sections to create constant CT across the face. In other embodiments, the first transition region can extend less into a sole portion than other sections to create constant CT across the face. In other embodiments, the first transition region can extend more into a desired quadrant or less into a desired quadrant to create constant CT across the face.

1 . A golf club head, comprising:
 a strike face, comprising:
 a central region including a geometric center of the strike face and having a central region thickness that is constant; 
 a first transition region surrounding the central region and having a first varying thickness; and 
 an intermediate region surrounding the first transition region and having an intermediate region thickness that is constant; 
 a second transition region surrounding both a portion of the first transition region and a portion of the intermediate region and having a second varying thickness; 
 an outer region surrounding the second transition region and having an outer region thickness that is constant; wherein the second varying thickness increases in thickness from the portion of the first transition region and the portion of the intermediate region to an outer region and having a second varying thickness; 
 wherein the central region thickness comprises a maximum thickness, the intermediate region comprises a minimum thickness, the outer region comprises a thickness greater than the intermediate region thickness and less than the central region thickness, the first varying thickness is between the maximum thickness and the minimum thickness, and the second varying thickness is between the minimum thickness and the outer region thickness; 
 the first transition region extends outwards from a central region perimeter, wherein the distance the first transition region extends varies depending on an angle formed between the z-axis and an imaginary line formed extending from the face center to a first transition region perimeter wherein; from 260 degrees to 310 degrees a theoretical first transition length is greater than 21 mm. 
   
     
     
         2 . The golf club head of  claim 1 , wherein from 260 degrees to 310 degrees, a thickness slope is less than 0.06. 
     
     
         3 . The golf club head of  claim 1 , wherein from 260 degrees to 310 degrees, a first transition run is greater than 20 mm. 
     
     
         4 . The golf club head of  claim 1 , wherein from 260 degrees to 310 degrees, a first transition length is greater than 20 mm. 
     
     
         5 . The golf club head of  claim 1 , wherein the second transition region surrounds between 25% and 100% of the first transition region. 
     
     
         6 . The golf club head of  claim 1 , wherein the intermediate region surrounds between 45% and 55% of the first transition region. 
     
     
         7 . The golf club head of  claim 1 , wherein from 30 degrees to 60 degrees, a first transition length is between 15 mm and 20 mm. 
     
     
         8 . The golf club head of  claim 1 , wherein from 30 degrees to 60 degrees, a first transition run is between 13 mm and 20 mm. 
     
     
         9 . The golf club head of  claim 1 , wherein from 30 degrees to 60 degrees, a thickness slope is between 0.05 and 0.10. 
     
     
         10 . The golf club head of  claim 1 , wherein from 30 degrees to 60 degrees, the theoretical first transition length is between 15 mm and 20 mm. 
     
     
         11 . A golf club head, comprising:
 a strike face, comprising:
 a central region including a geometric center of the strike face and having a central region thickness that is constant; 
 a first transition region surrounding the central region and having a first varying thickness; and 
 an intermediate region surrounding the first transition region and having an intermediate region thickness that is constant; 
 a second transition region surrounding both a portion of the first transition region and a portion of the intermediate region and having a second varying thickness; 
 an outer region surrounding the second transition region and having an outer region thickness that is constant; wherein the second varying thickness increases in thickness from the portion of the first transition region and the portion of the intermediate region to an outer region and having a second varying thickness; 
 wherein the central region thickness comprises a maximum thickness, the intermediate region comprises a minimum thickness, the outer region comprises a thickness greater than the intermediate region thickness and less than the central region thickness, the first varying thickness is between the maximum thickness and the minimum thickness, and the second varying thickness is between the minimum thickness and the outer region thickness; 
 the first transition region extends outwards from a central region perimeter, wherein the distance the first transition region extends varies depending on an angle formed between the z-axis and an imaginary line formed extending from the face center to a first transition region perimeter wherein; from 140 degrees to 220 degrees a first transition included angle is greater than 4 degrees. 
   
     
     
         12 . The golf club head of  claim 11 , wherein from 140 degrees to 220 degrees, the first transition included angle is greater than 6 degrees. 
     
     
         13 . The golf club head of  claim 11 , wherein from 140 degrees to 220 degrees, a thickness slope is greater than 0.12. 
     
     
         14 . The golf club head of  claim 11 , wherein from 160 degrees to 200 degrees, a thickness slope is greater than 0.15. 
     
     
         15 . The golf club head of  claim 11 , wherein from 140 degrees to 220 degrees, a first transition run is less than 10 mm. 
     
     
         16 . The golf club head of  claim 11 , wherein from 140 degrees to 220 degrees, a first transition length is less than 10.5 mm. 
     
     
         17 . The golf club head of  claim 11 , wherein at 180 degrees, a first transition length is between 7 and 14 mm. 
     
     
         18 . The golf club head of  claim 11 , wherein at 180 degrees, a first transition run is between 6 mm and 14 mm. 
     
     
         19 . The golf club of  claim 11 , wherein the intermediate region surrounds between 25% and 100% of the first transition region. 
     
     
         20 . The golf club of  claim 11 , wherein the second transition region surrounds between 25% and 100% of the first transition region.