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. 27, 2004
Filed:
Oct. 02, 2002
Atsushige Kobayashi, Nagoya, JP;
Kiyotoshi Ol, Anjo, JP;
Denso Corporation, , JP;
Abstract
A fuel pump includes an impeller and a passage member having a pump passage around the impeller, a fuel suction port and a fuel discharge port. The pump passage includes an arc-shaped fuel passage connected to the suction port and a terminal fuel passage connected to the discharge port. The discharge port is located outside the pump passage in the radial direction, and the terminal fuel passage is formed so that a portion of the terminal fuel passage is located radially more outside as the portion of the terminal fuel passage moves in the rotation direction of the impeller. The sectional area of the terminal fuel passage except spaces occupied by the impeller is approximately constant to prevent flow energy loss.