Inflatable gymnastic auxiliary apparatus

Abstract

An inflatable gymnastic auxiliary apparatus includes an elongated boy having an enclosed inner shell and an outer shell surrounding the enclosed inner shell, and an air valve installed in the elongated body in communication with the air chamber in the enclosed inner shell for enabling the elongated body to be inflated. Thus, the user can adjust the pressure in each enclosed inner shell to regulate the amount of deformation of the elongated body for providing a different hardness-softness subject to the actual requirement. After each use, the user can discharge the air pressure out of each enclosed inner shell to reduce the size of the inflatable gymnastic auxiliary apparatus for delivery or storage.

1 . An inflatable gymnastic auxiliary apparatus, comprising the steps of:
 an elongated body, said elongated body comprising at least one enclosed inner shell and an outer shell surrounding said at least one enclosed inner shell, each said enclosed inner shell defining therein an air chamber, said outer shell having an inner surface thereof adhered to an outer surface of each said enclosed inner shell; and   at least one air valve installed in said elongated body in communication with the air chamber in each said enclosed inner shell.   
     
     
         2 . The inflatable gymnastic auxiliary apparatus as claimed in  claim 1 , wherein each said enclosed inner shell comprises an outer layer of cloth covering; the inner surface of said outer shell is adhered to the outer layer of cloth covering of each said enclosed inner shell. 
     
     
         3 . The inflatable gymnastic auxiliary apparatus as claimed in  claim 1 , wherein said elongated body comprises a plurality of beads distributed over the periphery thereof. 
     
     
         4 . The inflatable gymnastic auxiliary apparatus as claimed in  claim 1 , wherein said elongated body has a uniform diameter extending along the length thereof. 
     
     
         5 . The inflatable gymnastic auxiliary apparatus as claimed in  claim 1 , wherein said elongated body comprises a plurality of big diameter portions and small diameter portions alternatively arranged along the length thereof. 
     
     
         6 . The inflatable gymnastic auxiliary apparatus as claimed in  claim 1 , wherein the cross section of said elongated body has one of circular, semicircular and multilateral shapes. 
     
     
         7 . The inflatable gymnastic auxiliary apparatus as claimed in  claim 1 , wherein the number of said at least one enclosed inner shell and the number of said at least one air valve are at least 2, and the at least two air valves are respectively connected to the at least two enclosed inner shells. 
     
     
         8 . The inflatable gymnastic auxiliary apparatus as claimed in  claim 7 , wherein the number of said at least one enclosed inner shell and the number of said at least one air valve are 3, and the three air valves are respectively connected to the three enclosed inner shells. 
     
     
         9 . The inflatable gymnastic auxiliary apparatus as claimed in  claim 8 , wherein the three enclosed inner shells are arranged in a line along the length of said elongated body and have different lengths, and the middle enclosed inner shell is shorter than the other two enclosed inner shells. 
     
     
         10 . The inflatable gymnastic auxiliary apparatus as claimed in  claim 1 , wherein said elongated body is made of a material selected from the group of polyurethane and natural rubber.