Weight adjustable bat

Abstract

A bat made of metal material includes an opening defined in a distal end of the barrel and an inner threaded portion is defined in the opening so as to receive a cap which is threadedly connected to the inner threaded portion and includes a weight such that the users can replace different caps to adjust the weight center of the bat as needed. The cap can be easily replaced by using a securing tool which includes insertion portions to be engaged with axial recesses in the cap.

1 . A bat ( 1 ) made of metal material, comprising:
 a hollow cylindrical body ( 10 ) and including a handle ( 11 ) and a barrel ( 12 ), the handle ( 11 ) having an exterior diameter smaller than an exterior diameter of the barrel ( 12 ), an opening ( 15 ) defined in a distal end of the barrel ( 12 ) and including an inner threaded portion ( 16 ) which extends axially toward the handle ( 11 ), and   at least one cap ( 20 ) having an exterior diameter larger than an interior diameter of the opening ( 15 ) and not larger than a maximum exterior diameter of the barrel ( 12 ), the at least one cap ( 20 ) including an outer threaded section ( 22 ) which extends axially from an end of the at least one cap ( 20 ), the outer threaded section ( 22 ) threadedly connected with the inner threaded portion ( 16 ), a washer ( 26 ) located between the barrel ( 12 ) and the at least one cap ( 20 ).   
     
     
         2 . The bat as claimed in  claim 1 , wherein a number of the at least one cap ( 20 ) is plural and the caps ( 20 ) have different weights, one of the caps ( 20 ) is connected to the barrel ( 12 ). 
     
     
         3 . The bat as claimed in  claim 1 , wherein the at least one cap ( 20 ) includes multiple axial recesses ( 21 ) defined in an end surface thereof. 
     
     
         4 . The bat as claimed in  claim 2 , wherein each of the caps ( 20 ) includes multiple axial recesses ( 21 ) defined in an end surface thereof. 
     
     
         5 . The bat as claimed in  claim 1 , wherein the at least one cap ( 20 ) has an index ( 23 ) marked thereon so as to display weight of the at least one cap ( 20 ). 
     
     
         6 . The device as claimed in  claim 3  further comprising a securing tool ( 30 ) which includes a driving portion ( 31 ) and at least two insertion portions ( 32 ), the driving portion ( 31 ) is for users to hold and the at least two insertion portions ( 32 ) are inserted into the axial recesses ( 21 ) of the cap ( 20 ). 
     
     
         7 . The device as claimed in  claim 4  further comprising a securing tool ( 30 ) which includes a driving portion ( 31 ) and at least two insertion portions ( 32 ), the driving portion ( 31 ) is for users to hold and the at least two insertion portions ( 32 ) are inserted into the axial recesses ( 21 ) of the cap ( 20 ). 
     
     
         8 . The bat as claimed in  claim 6 , wherein the axial recesses ( 21 ) are located in pairs and in radial directions around a center of the cap ( 20 ) at equal distance, the securing tool ( 30 ) includes two insertion portions ( 32 ) and a distance between the two insertion portions ( 32 ) equals to a distance between each pair of the axial recesses ( 21 ). 
     
     
         9 . The bat as claimed in  claim 7 , wherein the axial recesses ( 21 ) are located in pairs and in radial directions around a center of the cap ( 20 ) at equal distance, the securing tool ( 30 ) includes two insertion portions ( 32 ) and a distance between the two insertion portions ( 32 ) equals to a distance between each pair of the axial recesses ( 21 ). 
     
     
         10 . The bat as claimed in  claim 8 , wherein the insertion portions ( 32 ) are perpendicular to the driving portion ( 31 ) and the securing tool ( 30 ) is substantially an F-shaped tool. 
     
     
         11 . The bat as claimed in  claim 9 , wherein the insertion portions ( 32 ) are perpendicular to the driving portion ( 31 ) and the securing tool ( 30 ) is substantially an F-shaped tool.