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US 8,807,160 B2Granted
Fuel tank with internal fuel shut-off system
AssigneeFlorida Marine Tanks, Inc.
InventorOrestes Y. Monterrey
Life of this patent
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Abstract
A gas fuel tank with an internal emission fuel system includes a fill-and-vent valve system inside the fuel tank that controls fuel vapor through an exterior carbon canister and prevents spit back. This inventive system prevents exposure of the carbon canister to liquid or fuel. The fill valve assembly has a nylon wedge float that causes the fuel fill nozzle to shut off once the liquid level seals the valve opening. The vent valve assembly also has a nylon wedge float that shuts off vapor once the liquid level seals the valve opening.
Claims6
A marine vessel fuel system comprising:
- a fuel container housed within a marine vessel, the fuel container defining an interior and an exterior;
- a fuel-intake port located at a fuel-intake opening defined by a top surface of the fuel container and near a center of the top surface of the fuel container, the fuel-intake port passing from the exterior to the interior of the fuel container and having a diameter;
- and
- a fuel shut-off valve located at the fuel-intake port and having at least a portion within the interior of the fuel container, the fuel shut-off valve having:
- a chamber having a first end defining the fuel-intake opening at the top surface of the fuel container, a second end opposite the first end, and a length between the first end and the second end;
- and
- a fuel shut-off valve stopper:
- having a buoyancy when placed in liquid;
- having at least a portion located within the chamber;
- movable along the length of the chamber from the fuel-intake opening at the first end of the chamber to the second end of the chamber;
- and
- sized and configured to seal the fuel-intake opening at the top surface of the fuel container when the fuel shut-off valve stopper is moved, by a buoyance force of liquid within the chamber, to the fuel-intake opening;
- wherein the fuel shut-off valve is adapted to remain in an unsealed configuration until liquid in the fuel container reaches a predetermined capacity.
10 more elements
Dependencies are inferred from the claim text.