Fuel-dispensing nozzle inhibitor
First Claim
1. A nozzle inhibitor apparatus comprisinga fill tube adapted to be coupled to a fuel tank of a motor vehicle having a diesel engine, the fill tube having a nozzle-receiving aperture normally closed by an outer door mounted for movement relative to the fill tube between aperture-closing and aperture-opening positions, the outer door being arranged to be moved to an opened position by a nozzle inserted through the nozzle-receiving aperture, andmeans positioned in the fill tube and responsive to movement of the outer door for preventing insertion of a small-diameter unleaded fuel nozzle into the fill tube while allowing insertion of a large-diameter diesel fuel nozzle into the fill tube.
7 Assignments
0 Petitions
Accused Products
Abstract
A nozzle inhibitor is positioned in a filler neck closure assembly between a pivotable outer door and a pivotable inner door to prevent a user from pumping unleaded fuel into a diesel fuel tank. The nozzle inhibitor blocks full insertion of a small-diameter unleaded fuel nozzle into the filler neck closure assembly yet allows full insertion of a large-diameter diesel fuel nozzle into the filler neck closure assembly.
70 Citations
22 Claims
-
1. A nozzle inhibitor apparatus comprising
a fill tube adapted to be coupled to a fuel tank of a motor vehicle having a diesel engine, the fill tube having a nozzle-receiving aperture normally closed by an outer door mounted for movement relative to the fill tube between aperture-closing and aperture-opening positions, the outer door being arranged to be moved to an opened position by a nozzle inserted through the nozzle-receiving aperture, and means positioned in the fill tube and responsive to movement of the outer door for preventing insertion of a small-diameter unleaded fuel nozzle into the fill tube while allowing insertion of a large-diameter diesel fuel nozzle into the fill tube.
-
11. A nozzle inhibitor apparatus comprising
a fill tube adapted to be coupled to a fuel tank of a motor vehicle having a diesel engine, the fill tube having a nozzle-receiving aperture normally closed by a door mounted for movement relative to the fill tube between aperture-closing and aperture-opening positions, the door being arranged to be moved to an opened position by a nozzle inserted through the nozzle-receiving aperture, a stop gate, and a cam member coupled to the stop gate, a unit comprising the stop gate and the cam member coupled thereto being positioned in the fill tube and movable in a direction generally perpendicular to a longitudinal axis of the fill tube between a first position blocking insertion of a small-diameter unleaded fuel nozzle into the fill tube past the stop gate and a second position allowing insertion of a large-diameter diesel fuel nozzle into the fill tube past the stop gate, the door engaging the cam member to move the unit to the second position as the door moves to an opened position in response to the insertion of the large-diameter diesel fuel nozzle, but not the small-diameter unleaded fuel nozzle, into the fill tube through the outer nozzle-receiving aperture.
-
18. A nozzle inhibitor apparatus comprising
a fill tube including a filler neck coupled to a fuel tank of a motor vehicle having a diesel engine and a filler neck closure assembly coupled to the filler neck, the filler neck closure assembly including a housing having an outer nozzle-receiving aperture normally closed by a pivotable outer door and an inner nozzle-receiving aperture normally closed by a pivotable inner door, a stop gate, and a cam member coupled to the stop gate, a unit comprising the stop gate and the cam member coupled thereto being positioned in the filler neck closure assembly and movable in a direction generally perpendicular to a longitudinal axis of the filler neck closure assembly between a first position blocking insertion of a small-diameter unleaded fuel nozzle into the fill tube past the stop gate and a second position allowing insertion of a large-diameter diesel fuel nozzle into the fill tube past the stop gate, and a spring biasing the unit to the first position, the pivotable outer door engaging the cam member to move the unit to the second position against the biasing spring as the pivotable outer door moves to an opened position in response to the insertion of the large-diameter diesel fuel nozzle, but not the small-diameter unleaded fuel nozzle, into the filler neck through the outer nozzle-receiving aperture.
-
22. A nozzle inhibitor apparatus comprising
a fill tube formed to include a nozzle-receiving passageway extending between an outer nozzle-receiving opening and an inner nozzle-receiving opening, the fill tube further including an outer appearance door arranged normally to close the outer nozzle-receiving opening and an inner flapper door arranged to normally close the inner nozzle-receiving opening, a stop gate mounted for movement in the nozzle-receiving passageway, a spring arranged to urge the stop gate into a path of a small-diameter unleaded fuel nozzle that has been moved relative to the fill tube to pivot the outer appearance door about a pivot axis through a first pivot angle to a first opened position to engage a tip of the small-diameter unleaded fuel nozzle so that further movement of the small-diameter unleaded fuel nozzle toward the inner flapper door is blocked, and a cam face coupled to the stop gate and arranged to be moved by the outer appearance door against the spring to disable the stop gate, the cam face being located in the nozzle-receiving passageway to intercept the outer appearance door as the outer appearance door is being moved by a large-diameter diesel fuel nozzle having a relatively large diameter than the small-diameter unleaded fuel nozzle relative to the fill tube about the pivot axis through a larger second pivot angle to a second opened position to cause the outer appearance door to urge the cam face against the spring to compress the spring, thereby moving the stop gate in the nozzle-receiving passageway out of the path of the large diameter diesel fuel nozzle so that further movement of the large diameter diesel fuel nozzle to engage and move the inner flapper door from a normally closed position to an opened position admitting the large diameter diesel fuel nozzle into the inner nozzle-receiving opening.
Specification