Composite ball bat

Abstract

A composite ball bat includes a bat body made of a multilayer fiber composite material and including a hollow barrel, a handle and a tapered section joining the hollow barrel to the handle and having an outer diameter reducing gradually from the hollow barrel toward the handle, and a plurality of rings arranged in the hollow barrel of the bat body and spaced along the axis of the bat body with the outer circumferences thereof fixed on the inner circumference of the hollow barrel of the bat body. In this way, the composite ball bat of the invention can use these rings to improve the hitting effect while reducing weight.

What is claimed is: 
     
         1 . A composite ball bat, comprising:
 a bat body made of a multilayer fiber composite material, said bat body comprising a hollow barrel, a handle and a tapered section joining said hollow barrel to said handle, the outer diameter of said tapered section reducing gradually from said barrel toward said handle; and   a plurality of rings arranged in said hollow barrel of said bat body and spaced along the axis of said bat body, and the outer circumferences of said rings being fixed on the inner circumference of said hollow barrel of said bat body.   
     
     
         2 . The composite ball bat as claimed in  claim 1 , wherein said multilayer fiber composite material comprises an outer layer, an inner layer and at least one intermediate layer, the thickness of said inner layer being greater than the thickness of said at least one intermediate layer, the thickness of said at least one intermediate layer being greater than the thickness of said outer layer; the hardness of said rings is higher than the hardness of each layer of said multilayer fiber composite material. 
     
     
         3 . The composite ball bat as claimed in  claim 1 , further comprising a buffer space defined in said hollow barrel between each adjacent two layers of said multilayer fiber composite material. 
     
     
         4 . The composite ball bat as claimed in  claim 2 , further comprising a buffer space defined in said hollow barrel between each adjacent two layers of said multilayer fiber composite material. 
     
     
         5 . The composite ball bat as claimed in  claim 3 , wherein said buffer spaces have the same width. 
     
     
         6 . The composite ball bat as claimed in  claim 3 , wherein opposing front and back ends of said hollow barrel embed a spacer between each adjacent two layers of said multilayer fiber composite material, so that a buffer space is partitioned by the two said spacers embedded in said front and back ends of said hollow barrel within each adjacent two layers of said multilayer fiber composite material. 
     
     
         7 . The composite ball bat as claimed in  claim 3 , wherein each adjacent two layers of said multilayer fiber composite material beyond said hollow barrel are bonded together. 
     
     
         8 . The composite ball bat as claimed in  claim 4 , wherein said buffer spaces have the same width. 
     
     
         9 . The composite ball bat as claimed in  claim 4 , wherein opposing front and back ends of said hollow barrel embed a spacer between each adjacent two layers of said multilayer fiber composite material, so that a buffer space is partitioned by the two said spacers embedded in said front and back ends of said hollow barrel within each adjacent two layers of said multilayer fiber composite material. 
     
     
         10 . The composite ball bat as claimed in  claim 4 , wherein each adjacent two layers of said multilayer fiber composite material beyond said hollow barrel are bonded together. 
     
     
         11 . The composite ball bat as claimed in  claim 1 , wherein said rings are arranged in said hollow barrel of said bat body at equal intervals along the axis of said bat body. 
     
     
         12 . The composite ball bat as claimed in  claim 1 , wherein the multiple layers of said multilayer fiber composite material have the same thickness, and the hardness of said rings is higher than each layer of said multilayer fiber composite material of said hollow barrel of said bat body. 
     
     
         13 . The composite ball bat as claimed in  claim 1 , wherein said rings are made of a fiber composite material. 
     
     
         14 . The composite ball bat as claimed in  claim 1 , wherein said rings are made of a metal material.