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.:
Date of Patent:
Apr. 04, 2017
Filed:
Sep. 03, 2013
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Thomas Fritsch, Bamberg, DE;
Josef Groschel, Gossweinstein, DE;
Christoph Ross, Stegaurach, DE;
Barbara Pluta, Eggolsheim, DE;
Alexander Fichtner, Memmelsdorf, DE;
Hubert Burkard, Hirschaid, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A control valve for a hydraulic device, in particular a central valve of a camshaft adjuster for a reciprocating-piston internal combustion engine, having a holding component () in which a valve housing (), a control sleeve () and a control piston () are arranged, wherein the control piston () is mounted so as to be loaded on one side by a spring and, on the other side, is mounted with limited axial displaceability in the control sleeve () by means of a locking ring (), wherein the locking ring () can be fastened in the axial direction in an inner holder () on the holding component () and can be connected by a fixing device to a component of the control valve, and wherein the fixing device has fastening elements attached to the locking ring () and has matching recesses () in the valve housing () and/or in the control sleeve ().