Shaft of cue sticks

Abstract

A shaft of a cue stick for billiards or pool, includes an elongated tapered body laminated of a plurality of wood strips, each of the wood strips in cross-section having a sector section with an arcuate outer surface and an arc inner notch such that when the wood strips are laminated together, the arcuate outer surfaces form an outer surface of the body and the inner notches define an axial hole through the body; and a circular core tube made of a material having a greater rigidity than wood and having a shorter length than the axial hole, the tube being firmly received in the axial hole in such a way that the cue sticks body has a front hollow section extending a predetermined length along its axis from larger diameter to the smaller diameter end.

1 . A shaft which forms a separable length of a cue stick for playing billiard or pool game, comprising:
 an elongated body tapering from a first end to a second end, said first end having a smaller diameter than said second end;   said body laminated of a plurality of at least four wood strips, each of said wood strips in cross-section thereof including a sector section having an arcuate outer surface and an arc inner notch such that when said wood strips are laminated, said arcuate outer surfaces thereof form an outer surface of said body and said inner notches thereof define an axial cylindrical hole of said body; and   a circular core tube made of a material having a larger rigidity than wood and having a shorter length than said axial hole, said tube being firmly received in said axial hole of said body in such a way that said body has an empty front hollow section extending a predetermined length along the axis of said body from said first end of said body to a first adjacent end of said core tube.   
   
   
       2 . The shaft as claimed in  claim 1 , wherein said core tube is made of fiber-reinforced plastic materials. 
   
   
       3 . The shaft as claimed in  claim 1 , wherein said body has an empty rear hollow section with a predetermined length along the axis of said body from said second end of said body to a second adjacent end of said core tube. 
   
   
       4 . The shaft as claimed in  claim 1 , wherein the length of said core tube is equal to one half of the length of said body. 
   
   
       5 . The shaft as claimed in  claim 1 , wherein the number of said wood strips is four, each of said wood strips in cross-section thereof is a ninety degree sector section. 
   
   
       6 . The shaft as claimed in  claim 1 , wherein the number of said wood strips is six, each of said wood strips in cross-section thereof is a sixty degree sector section. 
   
   
       7 . The shaft as claimed in  claim 1 , wherein the number of said wood strips is eight, each of said wood strips in cross-section thereof is a forty-five degree sector section. 
   
   
       8 . The shaft as claimed in  claim 1 , wherein the diameter of said first end of said body is in the range of 12.5 mm to 13 mm. 
   
   
       9 . The shaft as claimed in  claim 8 , wherein the diameter of said axial hole of said body is about 6 mm. 
   
   
       10 . The shaft as claimed in  claim 9 , wherein the outer diameter of said core tube is about 6 mm. 
   
   
       11 . The shaft as claimed in  claim 10 , wherein the inner diameter of said core tube is about 4 mm. 
   
   
       12 . The shaft as claimed in  claim 1 , wherein the length of said body is about 740 mm. 
   
   
       13 . The shaft as claimed in  claim 12 , wherein the length of said core tube is about 380 mm. 
   
   
       14 . The shaft as claimed in  claim 13 , wherein the length of said front hollow section is about 180 mm.