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. 14, 2012
Filed:
Feb. 01, 2008
Lucia Hinkovska, Herzogenaurach, DE;
Sandra Schaefer, Hoechstadt, DE;
Lothar Von Schimonsky, Gerhardshofen, DE;
Norbert Nitz, Erlangen, DE;
Mario Kuhl, Herzogenaurach, DE;
Michael Haas, Hoechstadt, DE;
Lucia Hinkovska, Herzogenaurach, DE;
Sandra Schaefer, Hoechstadt, DE;
Lothar Von Schimonsky, Gerhardshofen, DE;
Norbert Nitz, Erlangen, DE;
Mario Kuhl, Herzogenaurach, DE;
Michael Haas, Hoechstadt, DE;
Schaeffler Technologies AG & CO. KG, Herzogenaurach, DE;
Abstract
A switchable bucket tappet for a valve drive of an internal combustion engine, which has a bucket basic body with a ring-like base. A hollow-cylindrical projection protrudes from an inner edge of the base, and in the bore of the projection an inner body extends. Two coupler pistons lie opposite one another and, to achieve full valve stroke, engage in sections with a driver surface of the bucket basic body which run in a radial hole of the inner body. A zero valve stroke is achieved when the coupler piston is displaced completely into the radial hole of the inner body, which is baseless and free of contact with a cam. The projection has a window-like aperture, with the underside acting as the driver surface for an upper side of the coupler piston during coupling. The region of the base is an approximately symmetrical and continuously thin-walled formation.