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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 10107241 B1

PDFFull Text
Date of Patent:
Oct. 23, 2018

Filed:

Jun. 16, 2015

Valve device and high-pressure pump using the same

Applicant:

Denso Corporation, Kariya, Aichi-pref., JP;

Inventor:

Masaharu Nakaoka, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Nixon & Vanderhye P.C.

Primary Examiner:

Peter J Bertheaud

Assistant Examiner:

Dnyanesh Kasture

Int. Cl.
CPC ...
F16K 17/196 (2006.01); F02M 37/00 (2006.01); F02M 37/04 (2006.01); F04B 19/22 (2006.01); F04B 53/14 (2006.01); F04B 53/16 (2006.01); F04B 53/10 (2006.01); F02M 63/02 (2006.01); F02M 63/00 (2006.01); F02M 59/10 (2006.01); F02M 59/46 (2006.01); F02M 59/36 (2006.01);
U.S. Cl.
CPC ...
F02M 37/0023 (2013.01); F02M 37/043 (2013.01); F02M 59/102 (2013.01); F02M 59/464 (2013.01); F02M 63/0049 (2013.01); F02M 63/029 (2013.01); F04B 19/22 (2013.01); F04B 53/10 (2013.01); F04B 53/14 (2013.01); F04B 53/16 (2013.01); F16K 17/196 (2013.01); F02M 59/366 (2013.01); F02M 2200/315 (2013.01); Y10T 137/7771 (2015.04);
Abstract

A valve device is provided between a high-pressure pump and a fuel tank. A first valve member, an intermediate member and a second valve member are accommodated in a valve housing. The first valve member, which is arranged on a downstream side of the intermediate member, is biased by a first spring in a direction to a first valve seat formed in the intermediate member. The second valve member, which is arranged on an upstream side of the intermediate member, is biased by a second spring in a direction to a second valve seat formed in the intermediate member. When the first valve member is separated from the first valve seat, fuel flows in a forward direction from an upstream-side fuel passage to a downstream-side fuel passage. When the second valve member is separated from the second valve seat, the fuel flows in a reverse direction.

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