Ball Bat

Abstract

A ball bat includes a bat body, a first tube and a second tube. The bat body has a barrel section having an upper receiving space, a knob section opposite to the barrel section, and a handle section interconnecting the barrel and knob sections and defining a lower receiving space. The bat body includes a plurality of wooden pieces, each of which has a connecting region that is formed with an upper groove as a portion of the upper receiving space, a lower groove as a portion of the lower receiving space, and a separating part separating the upper groove from the lower groove. The first tube is disposed in the upper receiving space. The second tube is disposed in the lower receiving space.

What is claimed is: 
     
         1 . A ball bat comprising:
 a bat body that extends along a main axis and that has
 a barrel section having an upper receiving space that extends along the main axis and that is defined cooperatively by a side surface extending along the main axis and top and bottom surfaces connected respectively to opposite ends of said side surface along the main axis, 
 a knob section opposite to said barrel section along the main axis, and 
 a handle section interconnecting said barrel and knob sections and having a lower receiving space that is isolated from said upper receiving space, that extends along the main axis, and that is defined cooperatively by a side surface extending along the main axis and top and bottom surfaces connected respectively to opposite ends of said side surface along the main axis, 
   said bat body including a plurality of angularly-disposed wooden pieces that extend along the main axis, each of said wooden pieces having a connecting region that is formed with an upper groove as a portion of said upper receiving space, a lower groove as a portion of said lower receiving space, and a separating part that separates said upper groove from said lower groove;   a first tube that is disposed in said upper receiving space and that has opposite tube ends adjacent respectively to said top and bottom surfaces of said barrel section; and   a second tube that is disposed in said lower receiving space and that has opposite tube ends adjacent respectively to said top and bottom surfaces of said handle section.   
     
     
         2 . The ball bat as claimed in  claim 1 , wherein said bat body includes a pair of said wooden pieces, said connecting region of each of said wooden pieces being configured as a plane. 
     
     
         3 . The ball bat as claimed in  claim 2 , wherein each of said wooden pieces further has:
 a barrel portion that defines said upper groove and that has a semicircular cross-section;   a handle portion that defines said lower groove and that has a semi-elliptic cross-section; and   a knob portion that extends from said handle portion along a knob axis which is oblique to the main axis, and that has a semi-elliptic cross-section.   
     
     
         4 . The ball bat as claimed in  claim 2 , wherein said upper receiving space has a diameter that is greater than that of said lower receiving space, said first tube having an outer diameter that is greater than that of said second tube. 
     
     
         5 . The ball bat as claimed in  claim 1 , wherein said first tube is made of one of a fiber reinforced plastic material and an aluminum alloy. 
     
     
         6 . The ball bat as claimed in  claim 5 , wherein said second tube is made of one of a fiber reinforced plastic material and an aluminum alloy. 
     
     
         7 . The ball bat as claimed in  claim 1 , wherein said second tube is made of one of a fiber reinforced plastic material and an aluminum alloy.