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 may have a toe portion, a heel portion, a top portion, a sole portion, a back portion, and a front portion with a face opening. The golf club head may have a face portion joined to the body portion and covering the face opening. The golf club head may include an interior cavity partially, substantially, or entirely filled with a structural adhesive. Other examples and embodiments may be described and claimed.

What is claimed is: 
     
         1 . A golf club head comprising:
 a body portion having a toe portion, a heel portion, a top portion, a sole portion, a front portion having a face portion with a front surface and a back surface, and a back portion with a back wall portion;   a first weight portion having a first mass and a height;   a second weight portion having a second mass greater than the first mass, the second weight portion located at or below a horizontal midplane of the body portion;   an interior cavity extending between the top and sole portions;   at least one port on the body portion connected to the interior cavity, the at least one port configured to receive the first weight portion and surround the first weight portion along the height of the first weight portion; and   an elastic polymer material injected in the interior cavity from the at least one port,   wherein a maximum distance between the top portion and the sole portion is greater than a maximum distance between the face portion and the back wall portion, and   wherein the face portion has a thickness between the front and back surfaces of less than or equal to 1.905 millimeters (0.075 inch).   
     
     
         2 . A golf club head as defined in  claim 1 , wherein the body portion comprises steel having a density of between 7.0 grams per cubic centimeter and 8.3 grams per cubic centimeter, a tensile strength between 600 million Newtons per square meter (600 Megapascals) and 800 million Newtons per square meter (800 Megapascals), and a yield strength between 500 Newtons per square meter (500 Megapascals) and 700 million Newtons per square meter (700 Megapascals). 
     
     
         3 . A golf club head as defined in  claim 1 , wherein the body portion comprises steel having a hardness of between 10 Rockwell Hardness in the C scale (HRC) and 40 HRC. 
     
     
         4 . A golf club head as defined in  claim 1 , wherein the body portion comprises steel having an elongation of between 5% and 40%. 
     
     
         5 . A golf club head as defined in  claim 1 , wherein a portion of the elastic polymer material separates the face portion and the first weight portion. 
     
     
         6 . A golf club head as defined in  claim 1 , wherein the second weight portion is larger than the first weight portion. 
     
     
         7 . A golf club head comprising:
 a body portion having a toe portion, a heel portion, a top portion, a sole portion, a front portion having a face portion with a front surface and a back surface, and a back portion with a back wall portion;   an interior cavity extending between the top and sole portions;   at least one port connected to the interior cavity;   an elastic polymer material injected in the interior cavity from the at least one port; and   at least one weight portion inserted into the at least one port to close the at least one port,   wherein the elastic polymer material separates the face portion and the at least one weight portion,   wherein a maximum distance between the top portion and the sole portion is greater than a maximum distance between the face portion and the back wall portion, and   wherein the face portion has a thickness between the front and back surfaces of less than or equal to 1.905 millimeters (0.075 inch).   
     
     
         8 . A golf club head as defined in  claim 7 , wherein the body portion comprises steel material having a density of between 7.0 grams per cubic centimeter and 8.3 grams per cubic centimeter, a tensile strength between 600 million Newtons per square meter (600 Megapascals) and 800 million Newtons per square meter (800 Megapascals), and a yield strength between 500 million Newtons per square meter (500 Megapascals) and 700 million Newtons per square meter (700 Megapascals). 
     
     
         9 . A golf club head as defined in  claim 7 , wherein the body portion comprises steel having a hardness of between 10 Rockwell Hardness in the C scale (HRC) and 40 HRC. 
     
     
         10 . A golf club head as defined in  claim 7 , wherein the body portion comprises steel having an elongation of between 5% and 40%. 
     
     
         11 . A golf club head as defined in  claim 7 , wherein the at least one weight portion is integral with the body portion. 
     
     
         12 . A golf club head as defined in  claim 7 , wherein the at least one weight portion comprises a material having a greater density than a density of a steel material of the body portion. 
     
     
         13 . A golf club head as defined in  claim 7 , wherein a distance between the at least one port and the heel portion is greater than a distance between the at least one port and the toe portion. 
     
     
         14 . A golf club head comprising:
 a body portion having an interior cavity, a toe portion, a heel portion, a top portion, a sole portion, a front portion having a face portion with a front surface and a back surface, a back portion with a back wall portion, and at least one port having a first opening, a second opening connected to the interior cavity, and an interior wall portion connecting the first opening to the second opening;   a polymer material in the interior cavity configured to partially or entirely fill the interior cavity by injection molding from the first opening of the at least one port, the polymer material configured to at least partially structurally support the face portion during impact of the face portion with a golf ball; and   a weight portion having a height and inserted into the at least one port to close the first opening,   wherein a maximum distance between the top portion and the sole portion is greater than a maximum distance between the face portion and the back wall portion,   wherein the face portion comprises a first thickness between the front and back surfaces of less than or equal to 1.905 millimeters (0.075 inch) and a second thickness having a greater thickness than the first thickness, and   wherein the interior wall portion of the at least one port surrounds the weight portion along the height of the weight portion.   
     
     
         15 . A golf club head as defined in  claim 14 , wherein the body portion comprises steel having a density of between 7.0 grams per cubic centimeter and 8.3 grams per cubic centimeter, a tensile strength between 600 million Newtons per square meter (600 Megapascals) and 800 million Newtons per square meter (800 Megapascals), and a yield strength between 500 million Newtons per square meter (500 Megapascals) and 700 million Newtons per square meter (700 Megapascals). 
     
     
         16 . A golf club head as defined in  claim 14 , wherein the body portion comprises steel having a hardness of between 10 Rockwell Hardness in the C scale (HRC) and 40 HRC. 
     
     
         17 . A golf club head as defined in  claim 14 , wherein the body portion comprises steel having an elongation of between 5% and 40%. 
     
     
         18 . A golf club head as defined in  claim 14  further comprising at least another weight portion located at or below a horizontal midplane of the body portion. 
     
     
         19 . A golf club head as defined in  claim 14 , wherein a distance between the weight portion and the heel portion is greater than a distance between the weight portion and the toe portion. 
     
     
         20 . A golf club head as defined in  claim 14 , wherein the weight portion is integral with the body portion.