Golf club heads and methods to manufacture golf club heads

Abstract

Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club head includes a body portion, a face portion coupled to the body portion and including and outer surface with a plurality of grooves and a plurality of projections, a filler material in an interior cavity of the body portion, a first mass portion coupled to the body portion, a second mass portion coupled to the body portion, and a port on the body portion configured to receive the first mass portion. At least a portion of the first mass portion is below a horizontal midplane of the hollow body portion, and the first mass portion and the second mass portion have at least one different physical property. Other examples and embodiments may be described and claimed.

What is claimed is: 
     
         1 . A golf club head comprising:
 a hollow body portion comprising a first material having a first density, the hollow body portion having a front portion, a toe portion with a toe portion edge, a heel portion with a hosel portion, a back portion with a back wall portion, a top portion with a top portion edge, a sole portion with a sole portion edge, and an interior cavity;   a face portion coupled to the front portion to enclose an interior cavity in the hollow body portion, the face portion comprising:
 a plurality of grooves formed on an outer surface of the face portion and extending lengthwise between the toe portion and the heel portion; and 
 a plurality of markings formed on the outer surface of the face portion, the plurality of markings defining a plurality of projections comprising:
 a first set of rectangular projections located on at least a portion of the face portion between each of the plurality of grooves and the top portion; 
 a second set of rectangular projections located between adjacent grooves and are spaced apart from adjacent grooves; and 
 a third set of rectangular projections with each rectangular projection of the third set of rectangular projections being adjacent to a corresponding groove such that each groove is surrounded by a plurality of rectangular projections of the third set of rectangular projections; 
 
   a filler material in the interior cavity, the filler material comprising a second material having a second density;   a first mass portion coupled to the hollow body portion, the first mass portion comprising a third material having a third density;   a second mass portion coupled to the hollow body portion and comprising the third material; and   a port on the hollow body portion configured to receive the first mass portion,   wherein at least a portion of the first mass portion is below a horizontal midplane of the hollow body portion,   wherein the first density is greater than the second density;   wherein the third density is greater than the first density;   wherein a distance between a portion of the first mass portion and the hosel portion is substantially greater than a distance between the portion of the first mass portion and the toe portion edge, and   wherein the first mass portion and the second mass portion have at least one different physical property.   
     
     
         2 . A golf club head as defined in  claim 1 , wherein an outer surface of the first mass portion defines a portion of an outer surface of the hollow body portion. 
     
     
         3 . A golf club head as defined in  claim 1 , wherein the first mass portion is securely attached to the hollow body portion inside the port by being screwed into the port. 
     
     
         4 . A golf club head as defined in  claim 1 , wherein the third material comprises a tungsten based material. 
     
     
         5 . A golf club head as defined in  claim 1 , wherein at least a portion of the filler material is attached to the hollow body portion. 
     
     
         6 . A golf club head as defined in  claim 1 , wherein at least a portion of the second mass portion is below the horizontal midplane. 
     
     
         7 . A golf club head as defined in  claim 1 , wherein a weight of the first mass portion is greater than a weight of the second mass portion. 
     
     
         8 . A golf club head comprising:
 a body portion having a front portion with a front opening, a toe portion with a toe portion edge, a heel portion with a hosel portion, a back portion with a back wall portion, a top portion with a top portion edge, a sole portion with a sole portion edge, and an interior cavity;   a face portion coupled to the front portion to close the front opening to define an enclosed cavity in the body portion, the face portion comprising:
 a plurality of grooves formed on an outer surface of the face portion and extending lengthwise between the toe portion and the heel portion; and 
 a plurality of markings formed on the outer surface of the face portion, the plurality of markings defining a plurality of projections comprising:
 a first set of rectangular projections located on at least a portion of the face portion between each of the plurality of grooves and the top portion; 
 a second set of rectangular projections located between adjacent grooves and are spaced apart from adjacent grooves; and 
 a third set of rectangular projections with each rectangular projection of the third set of rectangular projections being adjacent to a corresponding groove such that each groove is surrounded by a plurality of rectangular projections of the third set of rectangular projections; 
 
   a filler material in the interior cavity, the filler material having a Shore D hardness of greater than 5.0, a tensile strength of greater than 11.0 MPa, or a coefficient of restitution of greater than 0.80;   a first mass portion coupled to the body portion, the first mass portion being cylindrical and having a threaded outer portion;   a second mass portion coupled to the body portion; and   a port on the body portion, the port being cylindrical and having a threaded inner portion,   wherein the threaded outer portion of the first mass portion is configured to engage the threaded inner portion of the port to secure the first mass portion inside the port,   wherein a distance between a portion of the first mass portion and the hosel portion is substantially greater than a distance between the portion of the first mass portion and the toe portion edge,   wherein the first mass portion and the second mass portion comprise a material having a greater density than a density of a material of the body portion,   wherein the first mass portion and the second mass portion have at least one different physical property,   wherein a distance between a portion of the first mass portion and the face portion is less than a distance between a portion of the filler material and the face portion.   
     
     
         9 . A golf club head as defined in  claim 8 , wherein an outer surface of the first mass portion defines a portion of an outer surface of the body portion. 
     
     
         10 . A golf club head as defined in  claim 8 , wherein the body portion comprises a first material having a first density, and wherein the filler material comprises a second material having a second density less than the first density. 
     
     
         11 . A golf club head as defined in  claim 8 , wherein the body portion comprises a first material having a first density, wherein the filler material comprises a second material having a second density different from the first density, and wherein the first mass portion comprises a third material having a third density greater than the first density and greater than the second density. 
     
     
         12 . A golf club head as defined in  claim 8 , wherein the body portion comprises a first material having a first density, wherein the filler material comprises a second material having a second density less than the first density, and wherein the first mass portion comprises a third material having a third density different from the first density and different from the second density. 
     
     
         13 . A golf club head as defined in  claim 8 , wherein the body portion comprises a steel based material having a first density, wherein the filler material comprises a material having a second density less than the first density, and wherein the first mass portion comprises a tungsten based material having a third density greater than the first density and greater than the second density. 
     
     
         14 . A golf club head as defined in  claim 8 , wherein at least a portion of the filler material is attached to the body portion. 
     
     
         15 . A golf club head as defined in  claim 8 , wherein at least a portion of the port is below a horizontal midplane of the body portion. 
     
     
         16 . A golf club comprising:
 a golf club shaft having a first end and a second end;   a golf club grip attached to the first end of the golf club shaft;   a golf club head coupled to the second end of the golf club shaft, the golf club head having a body portion comprising a first material having a first density, the body portion having a front portion with a front opening, a toe portion with a toe portion edge, a heel portion with a hosel portion, a back portion with a back wall portion, a top portion with a top portion edge, a sole portion with a sole portion edge, and an interior cavity;   a face portion attached to the body portion to close the front opening of the front portion, the face portion comprising:
 a plurality of grooves formed on an outer surface of the face portion and extending lengthwise between the toe portion and the heel portion; and 
 a plurality of markings formed on the outer surface of the face portion, the plurality of markings defining a plurality of projections comprising:
 a first set of rectangular projections located on at least a portion of the face portion between each of the plurality of grooves and the top portion; 
 a second set of rectangular projections located between adjacent grooves and are spaced apart from adjacent grooves; and 
 a third set of rectangular projections with each rectangular projection of the third set of rectangular projections being adjacent to a corresponding groove such that each groove is surrounded by a plurality of rectangular projections of the third set of rectangular projections; 
 
   a filler material in the interior cavity, the filler material comprising a second material having a second density;   a first mass portion coupled to the body portion, the first mass portion comprising a third material having a third density;   a second mass portion coupled to the body portion; and   a port on the body portion configured to receive the first mass portion,   wherein at least a portion of the first mass portion is below a horizontal midplane of the body portion,   wherein the first density is greater than the second density;   wherein the third density is greater than the first density;   wherein a distance between a portion of the first mass portion and the hosel portion is substantially greater than a distance between the portion of the first mass portion and the toe portion edge, and   wherein the first mass portion and the second mass portion have at least one different physical property.   
     
     
         17 . A golf club as defined in  claim 16 , wherein an outer surface of the first mass portion defines a portion of an outer surface of the body portion. 
     
     
         18 . A golf club as defined in  claim 16 , wherein a distance between a portion of the first mass portion and the face portion is less than a distance between a portion of the filler material and the face portion. 
     
     
         19 . A golf club as defined in  claim 16 , wherein the third material comprises a tungsten based material. 
     
     
         20 . A golf club as defined in  claim 16 , wherein the first mass portion is cylindrical and the second mass portion is cylindrical.