Golf club head

Abstract

This invention provides a golf club head in which a plurality of scorelines are formed in its face surface. The golf club head includes a first fine groove formed in the face surface to extend parallel to the scorelines, and a second fine groove formed in the face surface to intersect with the first fine groove.

1 . A golf club head comprising:
 a plurality of scorelines are formed in a face surface thereof;   a first fine groove formed in the face surface to extend parallel to the scorelines; and   a second fine groove formed in the face surface to intersect with said first fine groove.   
     
     
         2 . The head according to  claim 1 , wherein
 a plurality of said first fine grooves are formed between adjacent scorelines to align themselves in a direction perpendicular to the scorelines,   a plurality of said second fine grooves are formed, and   each of said first fine grooves formed between the adjacent scorelines intersects with at least one of said second fine grooves.   
     
     
         3 . The head according to  claim 1 , wherein
 a plurality of said first fine grooves are formed between adjacent scorelines to align themselves in a direction perpendicular to the scorelines,   a plurality of said second fine grooves are formed, and   at least one of said second fine grooves intersects with not less than two of said first fine grooves formed between the adjacent scorelines.   
     
     
         4 . The head according to  claim 1 , wherein said second fine groove is formed from an edge of the scoreline. 
     
     
         5 . The head according to  claim 1 , wherein said first fine groove and said second fine groove are formed by one of cutting and laser processing. 
     
     
         6 . The head according to  claim 1 , wherein said first fine groove has a ridged edge. 
     
     
         7 . The head according to  claim 1 , wherein an intersection angle between said first fine groove and said second fine groove is 20° (inclusive) to 90° (inclusive). 
     
     
         8 . The head according to  claim 1 , wherein said first fine groove and said second fine groove have different depths. 
     
     
         9 . The head according to  claim 1 , wherein depths of said first fine groove and said second fine groove are 5 μm (inclusive) to 25 μm (inclusive).