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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.:

US 11441522 B1

PDFFull Text
Date of Patent:
Sep. 13, 2022

Filed:

Nov. 25, 2016

Fuel pump unit

Applicant:

Denso Corporation, Kariya, JP;

Inventors:

Tetsuo Hayakawa, Kariya, JP;

Hiromi Sakai, Kariya, JP;

Daiji Furuhashi, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Nixon & Vanderhye P.C.

Primary Examiner:

Logan M Kraft

Assistant Examiner:

Joshua Campbell

Int. Cl.
CPC ...
F02M 37/02 (2006.01); F02M 37/44 (2019.01); F02M 37/10 (2006.01); F02M 37/50 (2019.01); F04C 2/10 (2006.01); F02M 37/04 (2006.01); F04C 13/00 (2006.01); B01D 35/027 (2006.01); F04C 15/06 (2006.01); F02D 41/30 (2006.01);
U.S. Cl.
CPC ...
F02M 37/02 (2013.01); B01D 35/027 (2013.01); F02M 37/045 (2013.01); F02M 37/10 (2013.01); F02M 37/106 (2013.01); F02M 37/44 (2019.01); F02M 37/50 (2019.01); F04C 2/102 (2013.01); F04C 13/005 (2013.01); F04C 13/008 (2013.01); F02D 41/3082 (2013.01); F04C 15/06 (2013.01); F04C 2210/203 (2013.01);
Abstract

A fuel pump unit includes a suction filter and a fuel pump. The fuel pump includes: a rotatable shaft placed along a rotational axis; a rotor portion that rotates in response to rotation of the rotatable shaft; a suction hole portion, through which the fuel is suctioned into an inside of a rotor receiving chamber; and an outer peripheral wall that surrounds the suction hole portion. The suction filter includes: a filter element that filters the fuel and conducts the filtered fuel into an inside space; and a columnar hole portion having an inner peripheral wall, while the outer peripheral wall and the inner peripheral wall are fitted with each other, so that the columnar hole portion communicates between the inside space and the suction hole portion. The columnar hole portion is placed such that the rotational axis extends on an inner side of the inner peripheral wall.

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