Jet pump including flexible venturi
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United States of America Patent
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Sep 16, 1997
Grant Date -
N/A
app pub date -
Dec 1, 1995
filing date -
Dec 1, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A jet pump for use in a fuel tank wherein the jet pump includes a flexible venturi. The flexible venturi provides a variable area orifice to accommodate a large range of flow rates while providing a venturi effect throughout the range of flow rates. In addition, the flexible venturi is preferably a duckbill valve such that the venturi provides a check valve function for preventing reverse flow through the venturi. The duckbill valve is also preferably provided in combination with an umbrella valve wherein the umbrella valve provides a pressure limiting function for a fluid supply line connected to the venturi.
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