Patent ID: 6508275
Filing Date: 2003-01-21
Classification: B60K,F16L,Y10S

Abstract:
A fuel filler conduit for use in automotive applications for connecting to a fuel tank,said conduit having an inlet end, an outlet end, and including a single piece molded portion comprising a first portion and a second portion, and wherein said first portion is generally rigid and has a fixed configuration, and said second portion comprises a bellows portion, and said bellows portion is located intermediate said inlet end and said outlet end, so that the relative location of the inlet end with respect to the outlet end may be changed by deforming said bellows portion, and wherein said molded portion comprises a plurality of layers including, an inner layer, said inner layer comprised of electrically conductive high density polyethylene, an outer layer, said outer layer comprised of high density polyethylene and, a barrier layer for inhibiting passage of gaseous hydrocarbons from inside said filler conduit through said conduit as hydrocarbon fuel travels long said conduit, said barrier layer comprising ethylene vinyl alcohol copolymer and said barrier layer located intermediate said inner and outer layers, said conduit further comprising adhesive for adhering said barrier layers to layers radially inwardly of and radially outwardly of said barrier layer.