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:
Jul. 30, 2002
Filed:
Apr. 07, 2000
Applicant:
Inventor:
Masao Suzuki, Igugon Miyagi, JP;
Assignee:
Walbro Japan, Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02M 1/704 ;
U.S. Cl.
CPC ...
F02M 1/704 ;
Abstract
A membrane fuel pump (A) is driven by the pulsating pressure of intake air of an engine. Fuel in the fuel tank ( ) is supplied to a constant-pressure fuel chamber ( ) through valve ( ), and further to an intake passage through a fuel nozzle ( ). A membrane purge pump (B) is also driven by the pulsating pressure of the intake air of the engine. A plurality of vapor reservoir chambers ( ) are provided in a ceiling of the fuel chamber ( ). The fuel vapor in the vapor reservoirs ( ) is discharged from the fuel chamber ( ) and back into the fuel tank ( ) by the membrane purge pump (B).