Inflatable pad having reinforcing units

Abstract

An inflatable pad includes an inflatable pad body having a top layer, a bottom layer, and an annular surrounding layer interconnecting the top and bottom layers and cooperating with the top and bottom layers to define an inflatable space. A plurality of tubular reinforcing units are disposed in the inflatable space of the inflatable pad body. Each reinforcing unit has an annular outer surface having opposite polygonal attaching areas that face respectively the top and bottom layers of the pad body. A periphery of each of the polygonal attaching areas is attached fixedly to a corresponding one of the top and bottom layers of the pad body.

1 . An inflatable pad comprising:
 an inflatable pad body having a top layer, a bottom layer, and an annular surrounding layer interconnecting said top and bottom layers and cooperating with said top and bottom layers to define an inflatable space; and   a plurality of tubular reinforcing units disposed in said inflatable space of said inflatable pad body, each of said reinforcing units having an annular outer surface having opposite polygonal attaching areas that face respectively said top and bottom layers of said pad body, a periphery of each of said polygonal attaching areas being attached fixedly to a corresponding one of said top and bottom layers of said pad body.   
   
   
       2 . The inflatable pad as claimed in  claim 1 , wherein said attaching areas of said annular outer surface of each of said reinforcing units are hexagonal. 
   
   
       3 . The inflatable pad as claimed in  claim 1 , wherein each of said attaching areas of said annular outer surface of each of said reinforcing units has a plurality of sides, at least two of which are parallel to each other. 
   
   
       4 . The inflatable pad as claimed in  claim 3 , wherein the at least two of said sides of each of said attaching areas of said annular outer surface of each of said reinforcing units are longer than the other ones of said sides thereof. 
   
   
       5 . The inflatable pad as claimed in  claim 4 , wherein the at least two of said sides of each of said attaching areas of said annular outer surface of each of said reinforcing units extend in a longitudinal direction of a corresponding one of said tubular reinforcing units. 
   
   
       6 . The inflatable pad as claimed in  claim 1 , wherein each of said attaching areas of said annular outer surface of each of said reinforcing units is chamfered at each of corners thereof. 
   
   
       7 . The inflatable pad as claimed in  claim 1 , wherein each of said attaching areas of said annular outer surface of each of said reinforcing units is regular hexagonal.