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:
Apr. 29, 2008
Filed:
Mar. 14, 2006
Matthew Evans, Warren, MI (US);
Jermel Jones, Southfield, MI (US);
Peter Sailer, Erlangen, DE;
Oliver Schnell, Veitsbronn, DE;
Tim Matthias Hosenfeldt, Ebern, DE;
Matthew Evans, Warren, MI (US);
Jermel Jones, Southfield, MI (US);
Peter Sailer, Erlangen, DE;
Oliver Schnell, Veitsbronn, DE;
Tim Matthias Hosenfeldt, Ebern, DE;
Schaeffler KG, Herzogenaurach, DE;
Abstract
A switchable valve-drive component () for variable transmission of a stroke generated by one or more cam projections to a gas-exchange valve of an internal combustion engine is provided. The valve-drive component () has transmission elements (), which can be connected with a positive fit by coupling elements () in the transmission direction, in which force transmission surface sections () of the coupling elements () can be clamped between force transmission surface sections () of the transmission elements (). Here, at least one of the force transmission surface sections () should be provided with a wear protection layer (). This layer comprises at least one metal-free amorphous hydrocarbon layer with sp-hybridized and sp-hybridized carbon.