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. 07, 2012
Filed:
Mar. 12, 2010
Sandra Schäfer, Höchstadt, DE;
Robert Heinemann, Weisendorf, DE;
Sandra Schäfer, Höchstadt, DE;
Robert Heinemann, Weisendorf, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A switchable component () of a valve train of an internal combustion engine is provided, with a housing () in whose borehole () an inner element () is held so that it can move telescopically. At least one coupling piston () guided by an anti-rotation locking device () is located in a radial borehole () of the inner element () in a decoupled case, with a section () that is flattened in some areas being provided on the coupling piston on one axial side () starting from its outer end (). The borehole () of the housing () has a window () with a complementary engagement surface () against which, in a coupled case, the coupling piston () can be displaced with its flattened section () when passing through the cam base circle. An edge () between the outer end () and the flattened section () of the coupling piston () is provided with a bevel () that is a surface section of an ellipsoid whose longitudinal axis runs parallel to the flattened section ().