Beverage can having a covering for a dispensing opening

Abstract

A beverage can is provided with an opening tab rotatably attached to a rotational shaft formed on a can end, and a covering rotatably attached to the rotational shaft, being positioned beneath the opening tab, and adapted to be rotated together with the opening tab, the covering has a size larger than that of a dispensing opening through which contents of the beverage can are dispensed and an upwardly convex shape allowing the covering to be closely contacted to the can end during its rotational movement.

What is claimed is:  
     
         1 . A beverage can comprising: 
 an opening tab rotatably attached to a rotational shaft formed on a can end; and    a covering rotatably attached to the rotational shaft, being positioned beneath the opening tab, and adapted to be rotated together with said opening tab, the covering has a size larger than that of a dispensing opening through which contents of the beverage can are dispensed and an upwardly convex shape allowing the covering to be closely contacted to the can end during its rotational movement.    
     
     
         2 . The beverage can of  claim 1 , wherein the covering is made of thin aluminum plate.  
     
     
         3 . The beverage can of  claim 2 , wherein the thin aluminum plate has a thickness of 0.34 mm and its margin larger than that of the dispensing opening by 1 mm.