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 10030650 B1

PDFFull Text
Date of Patent:
Jul. 24, 2018

Filed:

Oct. 01, 2015

High pressure pump having unitary discharge and relief valve

Applicant:

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

Inventors:

Masatoshi Kuroyanagi, Kariya, JP;

Shinobu Oikawa, Kariya, JP;

Tatsuro Koga, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Nixon & Vanderhye P.C.

Primary Examiner:

Bryan Lettman

Assistant Examiner:

Timothy Solak

Int. Cl.
CPC ...
F04B 53/10 (2006.01); F04B 17/05 (2006.01); F04B 1/04 (2006.01); F04B 53/14 (2006.01); F04B 19/22 (2006.01); F04B 49/035 (2006.01); F04C 14/26 (2006.01); F04B 49/24 (2006.01); F04B 53/16 (2006.01); F04B 53/00 (2006.01); F16K 17/04 (2006.01);
U.S. Cl.
CPC ...
F04B 53/109 (2013.01); F04B 1/0404 (2013.01); F04B 19/22 (2013.01); F04B 49/035 (2013.01); F04B 49/24 (2013.01); F04B 53/1087 (2013.01); F04B 53/14 (2013.01); F04B 53/16 (2013.01); F04C 14/26 (2013.01); F04B 17/05 (2013.01); F04B 53/00 (2013.01); F16K 17/048 (2013.01);
Abstract

A valve body is provided with a discharge relief portion. A relief valve outlet is formed in an end face thereof on a central axis of the valve body. Discharge valve inlets are point-symmetrically formed with respect to the central axis. A discharge valve outlet is formed in another end face thereof and relief valve inlets are point-symmetrically formed with respect to the central axis. A discharge valve outlet and the discharge valve inlets communicate with each other. A flow of fuel from a pressurization chamber to a fuel discharge port is restricted by a discharge valve member capable of closing the discharge valve outlet. The relief valve outlet and the relief valve inlets communicate with each other. A flow of fuel from the fuel discharge port to the pressurization chamber is restricted by a relief valve member capable of closing the relief valve outlet.

Find Patent Forward Citations

Loading…