Fuel tank cap safety valve with splash control and...

Details Fuel tank cap safety valve with splash control and... Fuel tank cap safety valve with splash control and...

2006-12-05

2006-12-05

Hepperle, Stephen M. (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S043000, C220S203020, C220S203200, C220S203210

Reexamination Certificate

active

07143783

ABSTRACT:
A fuel tank cap provides a safety valve mounted on a tubular vent stem for venting fluids from a fuel tank. The safety valve is adapted for engagement with the tubular vent stem so that the fluids may enter the safety valve. A pair of upper cavities communicate with the vent stem through small channels offset therefrom. The upper cavities contain valve balls seated by gravity against valve seats for restricting fluid flow from the vent stem into the upper cavities. One upper cavity provides a biasing spring seating its valve ball against the its valve seat. The upper cavities provide restrictors positioned for limiting movement of the valve balls away from their valve seats, and a cover sealingly engaged with the safety valve to form a small chamber. The upper valve body further provides exit channels for conducting the fluids to exit.

REFERENCES:
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patent: 6648160 (2003-11-01), Hotch
patent: 1162099 (2001-12-01), None

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