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:
Nov. 19, 2013
Filed:
Mar. 25, 2011
Kirk Siefker, Pleasant Ridge, MI (US);
Kirk Siefker, Pleasant Ridge, MI (US);
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A switchable roller finger follower for a valvetrain of an internal combustion engine. The switchable roller finger follower includes an elongated body, a cam follower, a locking pin assembly, lost motion springs and a shuttle pad assembly moving horizontally. The locking pin assembly includes a locking pin and hydraulic fluid supply channel, selectively locking and unlocking the shuttle pad assembly, allowing either a high lift or low lift profile to achieve contact with pre-determined profiles of a multi-lobe camshaft which, in turn, provides low lift or high lift operation of an associated gas exchange valve.