Patent ID: 8418729

Claim:
A seamless convoluted hose assembly comprising: a melable expandable polymeric fluorocarbon tubular inner liner having an outer surface, an inner surface, and an inner liner wall therebetween defining a passageway; an outer reinforcing layer including a braided material disposed about said outer surface of said tubular inner liner; convolution producing means disposed about said outer surface of said tubular inner liner and interior to said outer reinforcing layer for producing convolutions in said tubular inner liner and said outer reinforcing layer when said tubular inner liner and said outer reinforcing layer are forced through said convolution producing means under heat and pressure, and an outer coating disposed within said outer reinforcing layer and extending inwardly to bond entirely together said outer surface of said tubular inner liner, said convolution producing means, and said outer reinforcing layer, and wherein said seamless convoluted hose assembly has hoop strength, tensile strength, and resistance to bursting; wherein said tubular inner liner comprises a meltable expandable polymeric fluorocarbon material selected from the group consisting of the polymer of tetrafluoroethylene; the polymer of fluorinated ethylene propylene; the polymer of perfluoroalkoxy; and the polymer of ethylene-tetrafluorethylene.