The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2004
Filed:
Dec. 20, 2002
Applicant:
Inventors:
Frédérico Vilela, Chalons en Champagne, FR;
Laurent Aubree, La Ville Aux Bois, Les Pontave, FR;
Assignee:
Marwal Systems, Charlons en Champagne, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04F 5/48 ;
U.S. Cl.
CPC ...
F04F 5/48 ;
Abstract
The invention provides a jet pump comprising a housing containing a nozzle into which an injected fluid is introduced, the housing also possessing a suction orifice, the pump comprising, upstream from the outlet of the nozzle, an auxiliary chamber associated with two sealing elements, each sealing element being adapted to open when the pressure of the injected fluid exceeds a predetermined level, the first sealing element opening at a first pressure level, the second sealing element opening at a second pressure level greater than or equal to the first.