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:
Feb. 25, 2025
Filed:
Aug. 10, 2022
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
The invention relates to a hydraulic camshaft adjuster () having a stator (), a rotor () rotatable relative to the stator () within a limited angular range, and a hydraulic supply () having two working channels () and a shifting valve (), wherein the two working channels () for adjusting the rotor () relative to the stator () in two opposite directions of action can be connected to a pump () for pressurisation or to a reservoir () for pressure relief, depending on the shifting position () of the shifting valve (), wherein the hydraulic supply () has a return pump () that can be actuated by displacing the shifting valve () between its shifting positions () and by the actuation of which one of the two work-ing channels () can be pressurised for returning the rotor () into a predetermined position.