Striking plate for a golf club head

Abstract

A striking plate of a golf club head includes roughened textured surface portions and scoring line portions. The roughened textured surface portions are spaced apart from each other. Each roughened textured surface portion includes ridges. The scoring line portions are arranged alternatingly with the roughened textured surface portions. Each scoring line portion includes a sunken surface, a surrounding surface surrounding the sunken surface, and two connecting surface segments each extending from one end of the surrounding surface to connect to a respective adjacent roughened textured surface portion. The sunken surface cooperates with the surrounding surface to define a groove that extends along a line.

What is claimed is: 
     
         1 . A striking plate for a golf club head, comprising:
 a plate body;   a plurality of roughened textured surface portions formed on said plate body and spaced apart from each other, each of said roughened textured surface portions including a plurality of ridges; and   a plurality of scoring line portions formed on said plate body and arranged alternatingly with said roughened textured surface portions on said plate body, each of said scoring line portions including a sunken surface, a surrounding surface extending at an angle from a periphery of said sunken surface and surrounding said sunken surface, and two connecting surface segments each extending from one end of said surrounding surface that is opposite to said sunken surface to connect to a respective adjacent one of said roughened textured surface portions, said sunken surface cooperating with said surrounding surface to define a groove that extends along a line, each of said connecting surface segments cooperating with said surrounding surface to define a corner.   
     
     
         2 . striking plate according to  claim 1 , wherein each of said connecting surface segments has a surface roughness smaller than that of said roughened textured surface portions. 
     
     
         3 . The striking plate according to  claim 1 , wherein said sunken surface, said surrounding surface, and said connecting surface segments have a surface roughness smaller than that of said roughened textured surface portions. 
     
     
         4 . striking plate according to  claim 1 , wherein each of said scoring line portions has a width that is measured between a respective adjacent pair of said roughened textured surface portions and that ranges from 1.0 mm to 1.2 mm. 
     
     
         5 . The striking plate according to  claim 4 , wherein said sunken surface has a width ranging from 0.7 mm to 0.9 mm. 
     
     
         6 . The striking plate according to  claim 5 , wherein each of said connecting surface segments has a width ranging from 0.1 mm to 0.2 mm. 
     
     
         7 . striking plate according to  claim 1 , wherein said grooves defined by said scoring line portions are parallel to each other. 
     
     
         8 . striking plate according to  claim 2 , wherein said grooves defined by said scoring line portions are parallel to each other. 
     
     
         9 . The striking plate according to  claim 3 , wherein said grooves defined by said scoring line portions are parallel to each other. 
     
     
         10 . The striking plate according to  claim 5 , wherein said grooves defined by said scoring line portions are parallel to each other. 
     
     
         11 . The striking plate according to  claim 1 , wherein said corner is a rounded corner. 
     
     
         12 . The striking plate according to  claim 2 , wherein said corner is a rounded corner. 
     
     
         13 . The striking plate according to  claim 3 , wherein said corner is a rounded corner. 
     
     
         14 . The striking plate according to  claim 5 , wherein said corner is a rounded corner.