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:
Jun. 06, 2006
Filed:
Dec. 16, 2004
Peter Sailer, Erlangen, DE;
Oliver Schnell, Veitsbronn, DE;
Dieter Schmidt, Nuremburg, DE;
INA-Schaeffler KG, , DE;
Abstract
The invention proposes a coupling mechanism () for relatively movable elements () of a switchable cam follower () of a valve train of an internal combustion engine, a high lift being obtainable upon coupling of said elements () and a lift smaller than the high lift being obtainable upon uncoupling of said elements (), a first one () of said elements comprising a guide bore () for at least one coupling piston () which, for achieving coupling, can be displaced partly beyond a parting surface () between said elements () into an aligned reception () of a second one () of said elements, wherein upon cam lift and coupling of said elements (), a contact zone () between the piston () and the reception () is clearly spaced from an edge section () of the reception () on the parting surface (). This can be implemented in practice, for instance, through a special 'backwards' oriented flattened portion () on the piston (). Material loading on the edge section () is thus avoided.