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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 10746148 B1

PDFFull Text
Date of Patent:
Aug. 18, 2020

Filed:

Sep. 18, 2017

Check valve, high-pressure component, and high-pressure fuel pump

Applicant:

Cpt Group Gmbh, Hannover, DE;

Inventors:

Markus Zankl, WaldmĂĽnchen, DE;

Helmut Kamm, Roding, DE;

Josef Tremmel-Burian, Cham, DE;

Assignee:

VITESCO TECHNOLOGIES GMBH, Hannover, DE;

Attorney:

Slayden Grubert Beard PLLC

Primary Examiner:

Hai H Huynh

Int. Cl.
CPC ...
F02M 61/04 (2006.01); F02M 59/46 (2006.01); F16J 15/34 (2006.01); F16K 15/02 (2006.01); F16K 15/04 (2006.01); F02M 59/44 (2006.01); F02M 61/16 (2006.01); F02M 61/20 (2006.01); F02M 63/00 (2006.01); F16F 1/04 (2006.01); F16F 1/12 (2006.01);
U.S. Cl.
CPC ...
F02M 59/462 (2013.01); F02M 59/44 (2013.01); F16J 15/3452 (2013.01); F16K 15/026 (2013.01); F16K 15/044 (2013.01); F02M 61/168 (2013.01); F02M 61/20 (2013.01); F02M 63/007 (2013.01); F02M 2200/50 (2013.01); F02M 2200/8061 (2013.01); F16F 1/047 (2013.01); F16F 1/123 (2013.01);
Abstract

Various embodiments include a check valve for a high-pressure component in a fuel injection system comprising: a valve housing with a valve hole having an inner diameter; a valve seat and a sealing element arranged in the valve hole; and a coil spring pushing the sealing element toward the valve seat along a longitudinal axis of the valve hole. The coil spring includes a plurality of coil turns each having an outer diameter. In a non-assembled state of the check valve, the outer diameter of at least one of the coil turns is greater than the inner diameter of at least a portion of the valve hole, so that in an assembled state of the check valve, the coil spring is secured in a force-fitting manner in the valve hole.

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