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:
Jan. 16, 2007
Filed:
Feb. 22, 2006
Madhusudan Raghavan, West Bloomfield, MI (US);
Mark A. Kramarczyk, Sterling Heights, MI (US);
Madhusudan Raghavan, West Bloomfield, MI (US);
Mark A. Kramarczyk, Sterling Heights, MI (US);
GM Global Technology OPerations, Inc., Detroit, MI (US);
Abstract
An engine valve actuator assembly is provided that includes a movable roller finger follower operatively engaged with a displaceable engine valve. A rotatable camshaft with a plurality of different cam lobes having different profiles rotates about the roller finger follower. A plurality of intermediate finger followers contact different ones of the cam lobes and pivot about a common axis. One of the intermediate finger followers is in continuous contact with the roller finger follower. One or more additional intermediate finger followers are separately selectively engageable for common pivoting with the intermediate finger follower that remains in continuous contact with the roller finger follower, thereby varying displacement of the engine valve depending upon the various cam profiles.