Patent ID: 6840264
Filing Date: 2005-01-11
Classification: B29C,B29K,B29L,B60K,Y10T

Abstract:
1. A fuel tank having a valve assembly for reduced fuel permeation, the fuel tank comprising: a tank shell having an outer layer and an outer lip extending outwardly from the outer layer, the outer lip defining an aperture formed through the tank shell and having inner and outer sides, the tank shell including a fuel delivery module cover disposed thereon, the tank shell comprising a predetermined material; a venting valve for venting a gaseous hydrocarbon fluid at a predetermined pressure from the tank, the valve being disposed through the aperture to define a circumferential space between the inner side of the outer lip and the venting valve; a channel having first and second ends, the first end connecting to the venting valve within the tank so that the venting valve is in fluid communication therewith when the valve vents fluid, the second end being attached to the fuel delivery module cover to allow fluid in the tank to be vented therefrom; a retention member disposed about the venting valve and attached to the outer layer about the outer side of the outer lip defining an expansion boundary so that the outer lip only expands toward the venting valve to seal the circumferential space when the tank absorbs hydrocarbons; and a cover comprising the predetermined material and attached to the outer layer to seal the valve between the cover and the outer layer.