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.

Date of Patent:
Oct. 31, 2017

Filed:

Jan. 10, 2014
Applicant:

Pierburg Gmbh, Neuss, DE;

Inventors:

Rolf Lappan, Cologne, DE;

Lukas Romanowski, Osnabrueck, DE;

Christoph Sadowski, Sprockhoevel, DE;

Assignee:

PIERBURG GMBH, Neuss, DE;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 31/06 (2006.01); F16K 15/18 (2006.01);
U.S. Cl.
CPC ...
F16K 31/06 (2013.01); F16K 15/18 (2013.01); F16K 31/0634 (2013.01); F16K 31/0693 (2013.01);
Abstract

A valve device for a hydraulic circuit includes an actuator unit comprising an electromagnetic circuit which comprises an armature, a core, a coil carrier, a coil, and a flux guiding device. A valve unit comprises a unit formed by a valve tappet and the armature, inlet and outlet ports, and a control port arranged between the inlet and outlet ports. A longitudinal through bore is arranged in the unit to extend from the inlet port into an actuator chamber. A first control body cooperating with a first valve seat and a second control body cooperating with a second valve seat are arranged at the unit in which the longitudinal through bore is formed. The armature and the valve tappet are loaded in an opening direction of the inlet valve by a spring element and are loadable in an opening direction of the outlet port by energizing the electromagnetic circuit.


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