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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 10119505 B1

PDFFull Text
Date of Patent:
Nov. 06, 2018

Filed:

Jun. 30, 2016

High pressure pump

Applicant:

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

Inventors:

Kaoru Oda, Kariya, JP;

Shinichiro Koshimoto, Kariya, JP;

Shinobu Oikawa, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Nixon & Vanderhye PC

Primary Examiner:

Devon Kramer

Assistant Examiner:

Christopher Brunjes

Int. Cl.
CPC ...
F02M 37/00 (2006.01); F02M 63/00 (2006.01); F02M 59/46 (2006.01); F04B 19/22 (2006.01); F04B 49/22 (2006.01); F04B 53/14 (2006.01); F04B 53/16 (2006.01); F04B 53/10 (2006.01); F02M 37/06 (2006.01); F04B 9/04 (2006.01); F04B 17/03 (2006.01); F04B 17/05 (2006.01); F04B 49/08 (2006.01); F04B 49/24 (2006.01);
U.S. Cl.
CPC ...
F02M 37/0052 (2013.01); F02M 37/06 (2013.01); F02M 59/46 (2013.01); F02M 63/005 (2013.01); F04B 9/042 (2013.01); F04B 17/03 (2013.01); F04B 17/05 (2013.01); F04B 19/22 (2013.01); F04B 49/08 (2013.01); F04B 49/22 (2013.01); F04B 49/24 (2013.01); F04B 53/10 (2013.01); F04B 53/1087 (2013.01); F04B 53/14 (2013.01); F04B 53/16 (2013.01); Y10T 137/7734 (2015.04);
Abstract

A high pressure pump includes a pressurization portion, a discharge portion, a body portion, a valve member, an urging member, valve hold member and a limiting portion. The body portion includes a relief passage, an inlet, a valve seat, and an outlet. The valve member includes a large diameter portion and a small diameter portion. The small diameter portion is located between the valve seat and the large diameter portion and has an outer diameter smaller than an outer diameter of the large diameter portion. The valve hold member surrounding and holding the large diameter portion. The limiting portion capable of limiting a motion of the valve hold member in a separation direction. According to this, a pressure in a fuel rail from extraordinarily increasing again after the relief valve is opened once.

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