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:
Nov. 03, 1992
Filed:
Nov. 13, 1990
Applicant:
Inventors:
Shingo Iwai, Hiroshima, JP;
Hiroshi Yoshioka, Hiroshima, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
415 553 ; 415 552 ; 4151691 ;
Abstract
A circumferential flow type fuel pump has a circumferential fuel flow passage provided around an impeller and a gas discharging hole formed in the inner wall of the fuel flow passage in such a manner that the fuel flow passage is communicated with the outside of the fuel pump. The upstream and portion of the fuel flow passage extends to a position near the gas discharging hole and is formed into a flow passage enlarging part by increasing its sectional area radially outwardly, whereby the pumping capacity is substantially maintained unchanged even under severe operation conditions such as at a high fuel temperature.