Patent ID: 6763853
Filing Date: 2004-07-20
Classification: F16L,Y10T

Abstract:
A lightweight conduit for fluid conveyance, comprising:(a) an outer conduit portion formed of rigid foam material, the outer conduit portion having an outer surface and an inner surface and first and second ends; (b) an inner conduit portion formed of rigid foam material, the inner conduit portion having an outer surface and an inner surface and first and second ends, the outer surface substantially conforming to the inner surface of the outer conduit portion; (c) the inner and outer conduit portions being aligned and adhered together wherein the first end of the inner conduit portion protrudes outwardly beyond the first end of the outer conduit portion, and the second end of the inner conduit portion is recessed into the second end of the outer conduit portion; and (d) a protective coating on the inner surface of the inner conduit portion wherein the coated inner surface defines an interface for fluid conveyance.