Patent ID: 6866058

Claim:
A fuel tank vent apparatus comprising a housing including an inner sleeve, a plate, and an outer sleeve, the inner sleeve being formed to include a valve chamber and a fuel vapor inlet port arranged to admit fuel vapor into the valve chamber, the plate being formed to include a fuel vapor outlet port arranged to discharge fuel vapor from the valve chamber, the outer sleeve being mounted to surround the inner sleeve and being formed to include a fuel vapor transfer port positioned farther below the plate than the fuel vapor inlet port and spaced circumferentially about a central axis of the housing from the fuel vapor inlet port, a valve mounted for movement in the valve chamber between an opened position allowing flow of fuel vapor from the valve chamber through the fuel vapor outlet port and a closed position blocking flow of fuel vapor from the valve chamber through the fuel vapor outlet port, and means for demoisturizing fuel vapor admitted into the valve chamber through the fuel vapor inlet port by providing a fuel vapor transfer passageway that is between the outer sleeve and the inner sleeve and is in communication with the fuel vapor transfer port and the fuel vapor inlet port so that liquid fuel entrained in fuel vapor is shed therefrom as fuel vapor flows laterally through the fuel vapor transfer port into the fuel vapor transfer passageway, upwardly toward the plate and circumferentially about the central axis away from the fuel vapor transfer port through the fuel vapor transfer passageway, and laterally through the fuel vapor inlet port into the valve chamber to produce a flow of demoisturized fuel vapor flowing from the fuel vapor transfer passageway into the valve chamber for discharge through the fuel vapor outlet port.