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:
Aug. 03, 2010
Filed:
Apr. 10, 2006
Yoshihiko Honda, Obu, JP;
Sumito Takeda, Obu, JP;
Shinichi Fujii, Obu, JP;
Aisan Kogyo Kabushiki Kaisha, Obu-shi, Aichi-ken, JP;
Abstract
Fuel pump ()comprises a casing () and an impeller (). A group of concavities () are formed in an upper or a lower face of the impeller. A groove () communicating a discharge hole () is formed in a inner face of the casing. The groove has an opening portion () that directly communicates with the discharge hole. The opening portion is shaped so as to extend in the rotation direction of the impeller, within a span extending from a position corresponding to substantially the central position of the concavities of the impeller, in the radial direction thereof, to a position corresponding to substantially the outer peripheral edge of the concavities of the impeller. The opening portion is be formed so as to extend in the rotation direction of the impeller beyond the position () where the inner peripheral edge connects therewith.