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:
Dec. 08, 2015
Filed:
May. 20, 2013
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
David Koehler, Egloffstein, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
Control valve for a device, in particular for a hydraulic control device, for variably setting the control times of gas exchange valves in internal combustion engines, including a housing component, a control piston and a retaining ring, the control piston being movably mounted, loaded by a spring, on the one hand, and limited with the aid of the retaining ring, on the other hand, the retaining ring projecting over the control piston in the radial direction and being fixable in the axial direction in a recess in the housing component, and a control sleeve and a plastic shell surrounding the control sleeve being provided between the control piston and the housing component, and the retaining ring being axially attachable to the plastic shell in addition to being fixable to the housing component, and limiting the movement of the control piston and/or the control sleeve.