Vented fuel tank cap assembly
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United States of America Patent
Stats
-
Sep 29, 1987
Grant Date -
N/A
app pub date -
Jun 13, 1986
filing date -
Jun 13, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A removable cap assembly for closing the open end of a fill spout of a fuel tank includes a built-in valve apparatus for venting the interior of the tank to the atmosphere. The valve apparatus further seals the liquid within the tank during certain operational conditions which could cause leakage of the liquid from the tank. Previous tank caps for closing the fill spout of liquid fuel tanks used various valve means to vent the tank, or to maintain a certain positive pressure within the tank. However, most previous liquid tank valve means were complex and would not prevent leakage of liquid from within the tank if the tank should be tipped drastically or upset. The vented fuel cap assembly of the present invention is of simple construction and will prevent leakage of fuel from the tank should the tank be tipped or inverted.
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