Golf shaft with roughened surface

Abstract

A golf club includes a tapered shaft, a club head attached to a first end of the shaft, and a grip attached to a second end of the shaft. The exterior surface of the shaft has a surface roughness of less than 143 micro inches. The exterior surface also includes a plurality of particles having a size in the range of about 20 microns to about 100 microns.

1 . A golf club comprising:
 a shaft having first and second ends and an exterior surface, said shaft having an outer diameter that diminishes as said shaft extends from said second end to said first end;   a club head attached to said first end of said shaft; and   a grip attached to said second end of said shaft,   wherein said exterior surface has a surface roughness of less than 143 micro inches and includes a plurality of particles having a size in the range of about 20 microns to about 100 microns.   
     
     
         2 . The golf club of  claim 1 , wherein said shaft has a r/d ratio in a range of about 1.29×10 −3  to about 11.33×10 −3 , wherein “r” is particle diameter and “d” is shaft outer diameter. 
     
     
         3 . The golf club of  claim 2 , wherein said r/d ratio is in a range of about 3.23×10 −3  to about 5.66×10 −3 . 
     
     
         4 . The golf club of  claim 3 , wherein the particles have a size of about 50 microns. 
     
     
         5 . The golf club of  claim 3 , wherein the particles have a size of about 20 microns. 
     
     
         6 . The golf club of  claim 1 , further comprising a coating on said exterior surface and wherein said particles are integral with said coating.