Fluid handling – Diverse fluid containing pressure systems – Fluid separating traps or vents
Reexamination Certificate
2007-04-10
2008-09-09
Rivell, John (Department: 3753)
Fluid handling
Diverse fluid containing pressure systems
Fluid separating traps or vents
C137S043000, C137S589000, C141S216000
Reexamination Certificate
active
07422027
ABSTRACT:
The present invention relates to a simple fuel vent assembly for use in inboard and outboard fuel tanks for marine vessels. The vent assembly includes upper and lower portions defining an L shaped interior passageway. The lower portion includes upper and lower valve seats positioned within this passageway. Spaced vent openings extend through the lower portion above and below the valve seat. A spherical float is positioned within the passageway between the upper and lower valve seats. As fuel is added to the tank, pressure can escape through the fuel vent. The flow valve is within the passageway as the level of liquid fuel in the tank rises during the fuel refilling process. When the tank is at its desired fill level the float engages the upper valve seat and forms a seal preventing liquid fuel from traveling past the upper seat and through the passageway into the atmosphere outside the tank. The second vent opening remained open to vent pressure from the space between the top of the tank and the fuel level.
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Dickinson Wright PLLC
Honaker William H.
Price Craig
Rivell John
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