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:
Sep. 08, 1987
Filed:
Dec. 23, 1986
Applicant:
Inventors:
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
415143 ; 417366 ; 55203 ;
Abstract
A fuel pump apparatus having two-stage pump sections and a vapor discharge port. A first impeller of a first stage pump section is attached to a vertically lower surface of a second impeller of a second stage pump section, the second impeller having a larger diameter than the first impeller. A vapor discharge port is formed in the second impeller at a radially inward portion thereof to open to a radially inwardly portion of a first pump passage. Fuel vapor is separated from liquid fuel at the first stage pump section and the liquid fuel is pressurized at the second stage pump section.