Jet pump including flexible venturi

Details Jet pump including flexible venturi Jet pump including flexible venturi

1995-12-01

1997-09-16

Freay, Charles G.

Pumps

One fluid pumped by contact or entrainment with another

Jet

417186, F04F 544, F04F 548

Patent

active

056673663

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.

REFERENCES:
patent: 4595344 (1986-06-01), Briley
patent: 5133324 (1992-07-01), Michiaki

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