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:
Aug. 13, 2013
Filed:
Apr. 28, 2011
Patrick Gautier, Stuttgart, DE;
Marc Hohmann, Marktheidenfeld, DE;
Wolf-dietmar Schulze, Giessen, DE;
Andre Selke, Naumburg, DE;
Markus Todt, Neurtingen, DE;
Patrick Gautier, Stuttgart, DE;
Marc Hohmann, Marktheidenfeld, DE;
Wolf-Dietmar Schulze, Giessen, DE;
Andre Selke, Naumburg, DE;
Markus Todt, Neurtingen, DE;
Hilite Germany GmbH, Marktheidenfeld, DE;
Abstract
A hydraulic valve for oscillating-motor camshaft adjuster is provided. The valve has a bush and a hollow piston with a piston bottom. The piston is axially movable within the bush by means of an actuator against the force of a screw-type pressure spring. The actuator is applied to the piston bottom. A sleeve secured in the bush is disposed inside the hollow piston and can be displaced relative to the piston. The wall of this sleeve has at least one through-opening, which leads to at least one opening of the hollow piston, which opening can guide a supply pressure (P) applied inside the sleeve alternatively to two sets of pressure chambers of the oscillating-motor camshaft adjuster. The sleeve has a sleeve bottom that seals off the inside space of hollow piston.