Striking plate for a golf club head

Abstract

A striking plate of a golf club head includes a plate body, a plurality of parallel elongate grooves formed in a surface of the plate body and each having a groove bottom, and a plurality of protrusions projecting from the groove bottom of each of the grooves and spaced apart from each other along the groove bottom.

1 . A striking plate for a golf club head, comprising:
 a plate body;   a plurality of parallel elongate first grooves formed in a surface of said plate body and each having a groove bottom; and   a plurality of protrusions projecting from said groove bottom of each of said first grooves and spaced apart from each other along said groove bottom.   
     
     
         2 . The striking plate as claimed in  claim 1 , wherein each of said first grooves has a depth larger than a height of each of said protrusions. 
     
     
         3 . The striking plate as claimed in  claim 1 , wherein each of said first grooves further has two opposite groove walls, said groove bottom bridging said groove walls, each of said groove walls having a stepped surface. 
     
     
         4 . The striking plate as claimed in  claim 1 , further comprising at least an elongate second groove formed between two adjacent ones of said first grooves and having a depth smaller than that of said first grooves. 
     
     
         5 . The striking plate as claimed in  claim 4 , wherein said second groove has a width smaller than that of said first grooves. 
     
     
         6 . The striking plate as claimed in  claim 1 , wherein said protrusions are arranged in a row along each of said first grooves. 
     
     
         7 . The striking plate as claimed in  claim 1 , wherein each of said protrusions has a substantially rectangular cross section. 
     
     
         8 . The striking plate as claimed in  claim 1 , wherein each of said protrusions has a substantially circular cross section. 
     
     
         9 . The striking plate as claimed in  claim 1 , wherein each of said protrusions has an oval cross section. 
     
     
         10 . The striking plate as claimed in  claim 1 , wherein each of said protrusions has a substantially X-shaped cross section. 
     
     
         11 . The striking plate as claimed in  claim 1 , wherein each of said protrusions tapers upwardly from said groove bottom of a corresponding one of said first grooves. 
     
     
         12 . The striking plate as claimed in  claim 1 , wherein said protrusions are arranged in two rows along each of said first grooves. 
     
     
         13 . The striking plate as claimed in  claim 12 , wherein said protrusions in one of said two rows are staggered relative to said protrusions in the other one of said two rows.