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:
Mar. 06, 2018
Filed:
Dec. 11, 2014
Applicant:
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Inventor:
David Koehler, Egloffstein, DE;
Assignee:
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/34 (2006.01); F01L 1/344 (2006.01);
U.S. Cl.
CPC ...
F01L 1/3442 (2013.01); F01L 2001/34426 (2013.01); F01L 2001/34433 (2013.01); F01L 2001/34453 (2013.01);
Abstract
A central valve () for a camshaft adjusting device including a control piston () having a first () and a second () control edge which enclose a first annular groove (), including a valve housing (), on the peripheral wall of which openings () are disposed, and including pressure medium paths extending between a feed connection and a discharge connection P, T of which the adjustable configuration is predetermined by the control edge geometry and the arrangement of the openings () and the adjusted configuration is dependent upon the relative axial position of the control piston ().