Golf club heads and methods to manufacture golf club heads

Abstract

Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head includes a body portion having an interior cavity, a front portion, a rear portion, a toe portion, a heel portion, a bottom portion, and a top portion. The golf club head further includes a face insert portion coupled to an opening in the front portion to close the interior cavity at the front portion. The face insert portion includes a first portion located at a center portion of the face insert portion and having a first thickness, a second portion at least partially surrounding the first portion and having a second thickness, and a third portion at least partially surrounding the second portion and having a third thickness. The first thickness is greater than the third thickness, the second thickness decreases from the first thickness to the third thickness in an outwardly direction relative to the center portion, and the first thickness, the second thickness and the third thickness are greater than a thickness of the front portion surrounding the face insert portion. Other examples and embodiments may be described and claimed.

What is claimed is: 
     
         1 . A golf club head comprising:
 a body portion comprising a front portion, a rear portion, a toe portion, a heel portion, a bottom portion, and a top portion;   a face portion comprising a face portion opening, an outer face portion surrounding the face portion opening, and a face insert portion coupled the outer face portion to close the face portion opening, the face insert portion having a front surface configured to strike a golf ball and a rear portion, the rear portion comprising:
 a first portion located at a center portion of the face insert portion and having a first thickness; 
 a second portion at least partially surrounding the first portion, the second portion having a second thickness; 
 a third portion at least partially surrounding the second portion, the third portion having a third thickness; 
 a fourth portion at least partially surrounding the third portion and having a fourth thickness; and 
   a fifth portion located on the outer face portion and at least partially surrounding the fourth portion, the fifth portion having a fifth thickness,   wherein the first thickness is uniform or substantially uniform and is greater than the third thickness,   wherein the third thickness is uniform or substantially uniform and is greater than the fifth thickness,   wherein the second thickness decreases from the first thickness to the third thickness in a direction from the first portion to the third portion, and   wherein the fourth thickness decreases from the third thickness to the fifth thickness in a direction from the third thickness to the fifth thickness.   
     
     
         2 . A golf club head as defined in  claim 1 , wherein the first portion has a rounded trapezoidal shape. 
     
     
         3 . A golf club head as defined in  claim 1 , wherein the first portion and second portion have the same shape and are concentric. 
     
     
         4 . A golf club head as defined in  claim 1 , wherein the fourth thickness defines a region on the face portion at which the face insert portion is attached to the outer face portion. 
     
     
         5 . A golf club head as defined in  claim 1 , wherein a surface area of the second portion is greater than a surface area of the first portion, and wherein a surface area of the second portion is greater than a surface area of the third portion. 
     
     
         6 . A golf club head as defined in  claim 1 , wherein the first portion has a geometric shape, and wherein a dimension of the geometric shape between the top portion and the bottom portion increases in a direction toward the toe portion. 
     
     
         7 . A golf club head as defined in  claim 1 , wherein the outer face portion comprises a titanium-based material and the face insert portion comprises a steel-based material. 
     
     
         8 . A golf club head comprising:
 a body portion made from a first material and comprising an interior cavity, a front portion, a rear portion, a toe portion, a heel portion, a bottom portion, and a top portion;   a face insert portion made from a second material different from the first material, the face insert portion coupled to an opening in the front portion to close the interior cavity at the front portion, the face insert portion comprising:
 a first portion located at a center portion of the face insert portion and having a first thickness; 
 a second portion at least partially surrounding the first portion and having a second thickness; and 
 a third portion at least partially surrounding the second portion and having a third thickness; 
   wherein the first thickness is greater than the third thickness,   wherein the second thickness decreases from the first thickness to the third thickness in an outwardly direction relative to the center portion, and   wherein the first thickness, the second thickness and the third thickness are greater than a thickness of the front portion surrounding the face insert portion.   
     
     
         9 . A golf club head as defined in  claim 8  further comprising a crown insert portion including a composite material and coupled to an opening on the top portion to close the interior cavity at the top portion. 
     
     
         10 . A golf club head as defined in  claim 8  further comprising a polymer filler material in the interior cavity coupled to an inner surface of the bottom portion. 
     
     
         11 . A golf club head as defined in  claim 8  further comprising at least one weight portion on the bottom portion, wherein a distance between the at least one weight portion and the rear portion is less than a distance between the at least one weight portion and the front portion. 
     
     
         12 . A golf club head as defined in  claim 8  further comprising a crown insert portion coupled to an opening on the top portion to close the interior cavity at the top portion, wherein the body portion, the face insert portion, and the crown insert portion are made from different materials. 
     
     
         13 . A golf club head as defined in  claim 8  further comprising a crown insert portion including a composite material and coupled to an opening on the top portion to close the interior cavity at the top portion, wherein the crown insert portion has a thickness of less than or equal to 0.65 millimeters. 
     
     
         14 . A golf club comprising:
 a shaft of a golf club having a first end and a second end opposite the first end;   a grip of a golf club attached to the second end of the shaft;   a golf club head coupled the first end of the shaft, the golf club head including a body portion comprising an interior cavity, a front portion, a rear portion, a toe portion, a heel portion, a bottom portion, and a top portion;   a face insert portion coupled to an opening in the front portion to close the interior cavity at the front portion, the face insert portion comprising a first portion located at a center portion of the face insert portion and having a first thickness, a second portion at least partially surrounding the first portion and having a second thickness, and a third portion at least partially surrounding the second portion and having a third thickness; and   a crown insert portion coupled to an opening on the top portion to close the interior cavity at the top portion,   wherein the first thickness is greater than the third thickness,   wherein the second thickness decreases from the first thickness to the third thickness in an outwardly direction relative to the center portion, and   wherein the first thickness, the second thickness and the third thickness are greater than a thickness of the front portion surrounding the face insert portion.   
     
     
         15 . A golf club as defined in  claim 14 , wherein the body portion comprises a titanium-based material and the face insert portion comprises a steel-based material. 
     
     
         16 . A golf club as defined in  claim 14 , wherein the crown insert portion comprises a composite based material. 
     
     
         17 . A golf club as defined in  claim 14  further comprising a polymer filler material in the interior cavity coupled to an inner surface of the bottom portion. 
     
     
         18 . A golf club as defined in  claim 14  further comprising a plurality of weight portions on the bottom portion. 
     
     
         19 . A golf club as defined in  claim 14 , wherein the body portion, the face insert portion, and the crown insert portion are made from different materials. 
     
     
         20 . A golf club as defined in  claim 14 , wherein the crown insert portion has a thickness of less than or equal to 0.65 millimeters.