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. 17, 2018
Filed:
Nov. 03, 2014
Denso Corporation, Kariya, Aichi-pref., JP;
Kyosan Denki Co., Ltd., Koga, Ibaraki-pref., JP;
Yutaka Niwa, Kariya, JP;
Hideto Takahashi, Kariya, JP;
Tetsuro Okazono, Kariya, JP;
Hironobu Oki, Koga, JP;
Akinari Sugiyama, Koga, JP;
Akihiro Ishitoya, Koga, JP;
DENSO CORPORATION, Kariya, JP;
KYOSAN DENKI CO., LTD., Koga, JP;
Abstract
A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a case body having a closed bottom shape that forms a housing chamber of the fuel filter, a case cap that covers an aperture of the case body by being joined to the case body, and a residual pressure retention valve that, when the fuel pump is stopped, retains a pressure of the fuel supplied from inside the filter case toward the internal combustion engine, the residual pressure retention valve being disposed at a joint boundary of the case body and the case cap.