Capless vehicle refueling system with moving fill passageway

A filler neck for use in delivering fuel to a vehicle fuel tank, the filler neck comprising

• a conduit including an outer end formed to include a mouth, an inner end formed to include means for delivering fuel to a fuel tank, and a vent passageway extending between the mouth and the delivering means,
• partition means for dividing the vent passageway into an outer chamber communicable with the atmosphere through the mouth and an inner chamber communicating with the delivering means, the partition means including aperture means for admitting a fuel-dispensing nozzle into the inner chamber during refueling,
• tube means for providing a fill passageway, the tube means being positioned for movement in the vent passageway of the conduit between a fill passageway-opening position and a fill passageway-closing position, the tube means including an outer end formed to include tube inlet means for admitting a fuel-dispensing nozzle into the fill passageway and an inner end formed to include tube outlet means for discharging fuel from the fill passageway into the delivering means,
• means for closing the fill passageway to block discharge of fuel vapors from the fuel tank to the atmosphere through the fill passageway upon movement of the tube means to its fill passageway-closing position, the closing means being appended to the conduit and arranged to engage the tube outlet means upon arrival of the tube means at its fill passageway-closing position, and
• spring means for yieldably urging the tube means into engagement with the partition means to block venting of fuel vapors from the inner chamber to the outer chamber through the aperture means formed in the partition means and into engagement with the closing means appended to the conduit to block venting of fuel vapors from the inner chamber to the outer chamber through the fill passageway.

A filler neck for use in delivering fuel to a vehicle fuel tank, the filler neck comprising

• a conduit including an outer end formed to include a mouth, an inner end formed to include means for delivering fuel to a fuel tank, and a vent passageway extending between the mouth and the delivering means,
• a first partition mounted in the conduit to divide the vent passageway into an outer chamber in the outer end of the conduit and an inner chamber in the inner end of the conduit, the first partition is formed to include a first aperture interconnecting the inner and outer chambers,
• a closure member mounted in the inner end of the conduit and arranged to extend toward the first partition,
• a tube positioned for movement in the vent passageway and formed to include a nozzle-receiving inlet opening, a fuel-discharging outlet opening, and a fill passageway extending between the nozzle-receiving inlet opening and the fuel-discharging outlet opening,
• a support flange appended to the conduit and situated in the vent passageway in the inner end of the conduit in spaced-apart relation to the first partition,
• a spring urging the tube in the vent passageway into engagement with the first partition to close the first aperture and with the closure member to close the fuel-discharging outlet opening, the spring having one end engaging the support flange and another end engaging the tube.