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. 23, 2011
Filed:
Jan. 30, 2008
Peter Sailer, Erlangen, DE;
Mario Kuhl, Herzogenaurach, DE;
Lucia Hinkovska, Herzogenaurach, DE;
Sandra Schaefer, Hoechstadt, DE;
Peter Sailer, Erlangen, DE;
Mario Kuhl, Herzogenaurach, DE;
Lucia Hinkovska, Herzogenaurach, DE;
Sandra Schaefer, Hoechstadt, DE;
Schaeffler KG, Herzogenaurach, DE;
Abstract
A switchable bucket tappet for a valve drive of an internal combustion engine, which has a bucket base body with a ring-shaped base guided by a skirt projecting from the outer edge of the base in a bore of the engine. A lifting cam acts on the base and a hollow cylindrical extension projects from an inner edge of the base. In the bore, an inner body is axially movable relative to the bucket base body and, formed in the underside of the inner body, is a support for indirect contact with a gas exchange valve. A coupling piston, which has a flattened portion on its upper side, runs in a bore of the inner body and is engaged with a driver surface for full valve lift. A lost motion spring acts between the bucket base body and inner body.