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:
Apr. 06, 2004
Filed:
Mar. 15, 2002
Hiroaki Takei, Kariya, JP;
Denso Corporation, , JP;
Abstract
A fuel pump for discharging a desired amount of fuel during vapor generation has a pump cover and a pump casing which rotatably accommodates an impeller. A pressure difference is caused in the vicinity of each impeller vane groove by fluid friction as the impeller rotates. Such a pressure difference repeatedly occurs with respect to each of the vane grooves, causing the pressurization of fuel in a pump channel formed along an outer periphery of the impeller to pump fuel to a motor chamber. An introduction groove of the pump channel formed on the pump cover side has a first vapor chamber outwardly extending in the radial direction of the impeller. Another pump channel introduction groove formed on the pump casing side has a second vapor chamber above the impeller. The first and second vapor chambers permit the removal of vapor in fuel fed from the fuel suction port.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile