logo

For the Inventor, By the Inventor

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 11168655 B1

PDFFull Text
Date of Patent:
Nov. 09, 2021

Filed:

Sep. 10, 2015

Fuel filter device

Applicant:

Aisan Kogyo Kabushiki Kaisha, Obu, JP;

Inventors:

Kensuke Niwa, Nagoya, JP;

Koji Yoshida, Kasugai, JP;

Tatsuki Fukui, Novi, MI (US);

Hiroyasu Kariya, Kariya, JP;

Assignee:

AISAN KOGYO KABUSHIKI KAISHA, Obu, JP;

Attorney:

Conley Rose, P.C.

Primary Examiner:

Robert J Popovics

Int. Cl.
CPC ...
F02M 37/50 (2019.01); F16K 15/06 (2006.01); F02M 37/00 (2006.01); F02M 37/10 (2006.01); F16K 17/12 (2006.01); B01D 35/153 (2006.01); B01D 35/027 (2006.01); F02M 37/46 (2019.01); F02M 37/48 (2019.01); B01D 27/06 (2006.01); B01D 27/08 (2006.01); B01D 35/143 (2006.01); B01D 35/30 (2006.01); B01D 36/00 (2006.01); B01D 35/00 (2006.01); B01D 37/00 (2006.01);
U.S. Cl.
CPC ...
F02M 37/50 (2019.01); B01D 27/06 (2013.01); B01D 27/08 (2013.01); B01D 35/0273 (2013.01); B01D 35/143 (2013.01); B01D 35/153 (2013.01); B01D 35/306 (2013.01); B01D 36/005 (2013.01); F02M 37/00 (2013.01); F02M 37/10 (2013.01); F02M 37/46 (2019.01); F02M 37/48 (2019.01); F16K 15/06 (2013.01); F16K 17/12 (2013.01); B01D 35/00 (2013.01); B01D 37/00 (2013.01); B01D 2201/0423 (2013.01);
Abstract

A fuel filter device includes a bag-shaped filter member filtering fuel that is drawn into a fuel pump, an inner frame member retaining the filter member in an expanded state, and a mounting member connected to the inner frame member and serving to communicate an internal space of the filter member with an outside. A valve chamber is defined by the inner frame member and the mounting member, and a check valve serving to prevent backflow of fuel is disposed in the valve chamber. The check valve includes a flat-plate shaped valve body having elasticity. The check valve opens against its weight when the fuel pump is operated, and the check valve closes due to its weight when the operation of the fuel pump is stopped.

Find Patent Forward Citations

Loading…