초록 ▼

A fuel overflow prevention system for substantially eliminating fuel spillage both due to over-filling during fueling and due to fuel expansion in fuel tanks. The device includes a fuel discharge preventor and a nozzle adapter that work together during re-fueling to allow displacement by fuel of gas

A fuel overflow prevention system for substantially eliminating fuel spillage both due to over-filling during fueling and due to fuel expansion in fuel tanks. The device includes a fuel discharge preventor and a nozzle adapter that work together during re-fueling to allow displacement by fuel of gases within the fuel tank until such time that the fuel reaches a predetermined level in the tank. The system also includes a feedback coupling to permit the transfer of excess fuel from the preventor back to the fuel inlet, particularly when an automatic shutoff nozzle is employed. The system further includes an extension tube to allow remote location of a housing containing the discharge prevention valving of the invention. The discharge prevention housing only permits venting of vapors to the atmosphere and prevents liquid fuel discharge. A vent tube coupling permits venting of those vapors to a standard marine atmospheric vent.

대표청구항 ▼

[ I claim:] [1.] A fluid overflow prevention device for use with a liquid fuel tank having a first tank opening and a second tank opening, wherein said first opening and said second opening are located at a top surface of said fuel tank, wherein said first tank opening is a fuel inlet and said secon

[ I claim:] [1.] A fluid overflow prevention device for use with a liquid fuel tank having a first tank opening and a second tank opening, wherein said first opening and said second opening are located at a top surface of said fuel tank, wherein said first tank opening is a fuel inlet and said second tank opening is a vent to atmosphere, said device comprising:a) a nozzle adapter for securing a nozzle of a pressure-sensitive pump handle to said first tank opening during flow of a fluid into said tank through said nozzle;b) a signal tube and a vent tube in combination and adaptable to be attached to said second tank opening, wherein said signal tube includes an intake opening for receiving fuel gases from within said fuel tank, wherein said signal tube includes a signal element located at an end opposite to where said intake opening is located, and wherein said vent tube is attached to said signal tube opposite end and includes an exit vent and a combination of a fuel-blocking component and a ball seat, wherein said combination of said fuel-blocking component and said ball seat is designed to permit said fuel gases entering said intake opening to exit said exit vent and to prevent any liquid fuel entering said intake opening from exiting said exit vent;c) a housing for joining said signal tube and said vent tube together, wherein said housing includes an interior section;d) a mounting section to secure said housing to said second tank opening; ande) a return tube having a first end coupled to said interior of said housing and a second end coupled to said fuel inlet.