Patent ID: 7845366
Filing Date: 2010-12-07
Classification: B29C,B29K,B29L,B60K,F16K,Y10T

Abstract:
1. A vehicle fuel system comprising a vent apparatus including a vent controller sized to extend through a mounting aperture formed in a fuel tank and an outer cover coupled to the vent controller and adapted to be coupled to the fuel tank to close the mounting aperture and to support the vent controller in communication with an interior region in a fuel tank, wherein the outer cover includes an interior base made of acetal and coupled to the vent controller and an exterior shell made of a weldable material and adapted to be welded to the fuel tank, the outer cover includes a venting outlet defined by portions of the interior base and the exterior shell and adapted to be coupled to a vapor discharge hose configured to conduct fuel vapor discharged by the vent controller, the interior base includes an inner outlet conduit providing a vent passageway, and the exterior shell includes an outer outlet conduit surrounding the inner outlet conduit to define the venting outlet, wherein the outer outlet conduit is formed to include a terminal opening, wherein the inner outlet conduit is arranged to extend through the terminal opening to define a shielded portion thereof surrounded by the outer outlet conduit and an exposed portion thereof located outside of the outer outlet conduit and formed to include a terminal end arranged to lie in spaced-apart relation to the outer outlet conduit, wherein the outer outlet conduit includes an interior wall facing toward the shielded portion of the inner outlet conduit, an exterior wall facing away from the shielded portion of the inner outlet conduit, and a first annular hose mount coupled to the exterior wall of the outer outlet conduit and arranged to extend radially outwardly to mate with an inner wall of a vapor discharge hose having a vapor-conducting passageway receiving the outer and inner outlet conduits therein to define a first seal connection between the venting outlet and the vapor discharge hose, wherein the inner outlet conduit includes a second annular hose mount coupled to the exposed portion of the inner outlet conduit and arranged to lie between the first annular hose mount and the terminal end and to extend radially outwardly to mate with the inner wall of the vapor-discharge hose to define a second seal connection between the venting outlet and the vapor discharge hose, a third annular hose mount coupled to the exposed portion of the inner outlet conduit and arranged to lie between the second annular hose mount and the terminal end and to extend radially outwardly to mate with the inner wall of the vapor discharge hose to define a third seal connection between the venting outlet and the vapor discharge hose, and an intermediate annular hose mount coupled to the exposed portion of the inner outlet conduit and arranged to lie in close proximity to the third annular hose mount and to extend radially outwardly to define an annular chamber between the intermediate and third annular hose mounts, and wherein the venting outlet further includes an O-ring seal received in the annular chamber formed in the inner outlet conduit and arranged to mate with the exposed portion of the inner outlet conduit and the inner wall of the vapor discharge hose to define a fourth seal connection between the venting outlet and the vapor discharge hose.