Racket being improved elastic and repellent force

Abstract

The present invention relates to a racket being improved elastic and repellent force including an elliptical head frame, a net unit installed along the inner surface of the head frame, a neck unit formed in the long axis direction of the head frame, a handle unit extended from the neck unit, and oblique grooves being consecutively formed along the \outer circumference of the head frame so that strings extended from the net unit can be wound on the head frame. Because the tension is improved in string, the strings crossing each other in the net unit can maintain a predetermined interval to improve the elastic and repellent force, and users can enjoy ball games without correcting the strings. Moreover, the present invention provides the racket having the excellent elastic and repellent force and impact absorption force without considering a material of the racket or strings or using a special device, and thus provides the simple and excellent racket which can be applied to various ball games with a low price.

What is claimed is:  
     
         1 . A racket being improved elastic and repellent force comprising: 
 an elliptical head frame;    a net unit installed along the inner surface of the head frame;    a neck unit formed in the long axis direction of the head frame;    a handle unit extended from the neck unit; and    oblique grooves being consecutively rounded along the outer circumference of the head frame in the width direction of the head frame so that strings extended from the net unit can be wound on the head frame.    
     
     
         2 . The racket of  claim 1 , wherein protruding units are formed on the outer circumference of the head frame, and oblique grooves are formed at the center portions of the protruding units.  
     
     
         3 . The racket of  claim 1  or  2 , wherein high elastic tapes are adhered to the outer surfaces of the oblique grooves.  
     
     
         4 . The racket of  claim 1  or  2 , wherein grooves are formed on the outer circumference of the head frame in the longitudinal direction, and high elastic tapes are adhered to the outer surfaces of the grooves.  
     
     
         5 . The racket of  claim 1  or  2 , wherein the strings extended from the net unit are coated by high elastic tubes in the oblique grooves to prevent abrasion.  
     
     
         6 . The racket of  claim 3 , wherein the strings extended from the net unit are coated by high elastic tubes in the oblique grooves to prevent abrasion.  
     
     
         7 . The racket of  claim 4 , wherein the strings extended from the net unit are coated by high elastic tubes in the oblique grooves to prevent abrasion.  
     
     
         8 . The racket of  claim 1 , wherein the oblique grooves are formed in a part of the outer circumference of the head frame.  
     
     
         9 . The racket of  claim 1 , wherein gas is filled in a space unit formed by the head frame, the neck unit and the handle unit.  
     
     
         10 . The racket of  claim 9 , wherein a high elastic tube is installed in the space unit, and the gas is filed through the high elastic tube.  
     
     
         11 . The racket of  claim 9  or  10 , wherein the gas filled in the space unit is helium gas.  
     
     
         12 . The racket of  claim 9  or  10 , wherein the gas filled in the space unit is compression air.  
     
     
         13 . The racket of  claim 9  or  10 , wherein a lower end unit incorporated with a gas injection unit is hermetically sealed to the end of the handle unit.  
     
     
         14 . The racket of  claim 13 , wherein the gas injection unit is a valve device.