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:
Jul. 19, 2011
Filed:
Jan. 14, 2009
Matthew Evans, Warren, MI (US);
Ross A. Gresley, Tega Cay, SC (US);
John Stallmann, Washington, MI (US);
Bogyu Kang, Troy, MI (US);
Brian Lee, York, SC (US);
Matthew Evans, Warren, MI (US);
Ross A. Gresley, Tega Cay, SC (US);
John Stallmann, Washington, MI (US);
Bogyu Kang, Troy, MI (US);
Brian Lee, York, SC (US);
Schaeffler Technologies GmbH & Co. KG, Herzogenaurach, DE;
Abstract
A valve train of an internal combustion engine with at least one camshaft () on which at least one rotatable cam () is arranged fixed in the axial direction, wherein a rotationally fixed connection of the at least one cam () with the camshaft () can be selectively established and released by an associated coupling-like locking device (). So that the valve train has a compact construction and low production costs and nevertheless low wear in operation, it is provided that the locking device () is held within the cam () and has a spring-loaded, annular locking collar () that can move in the axial direction on the camshaft () and, as a counter part to the locking collar (), locking shoes (') coupled with the cam (), wherein, in a locking position, the locking collar () is pressed against the locking shoes (′) by contacting, ramp-shaped boundary surfaces () formed on the locking collar () and the locking shoes (′), so that radial projections () arranged on the locking shoes (′) engage in adjacent, pocket-shaped receptacles () of the camshaft () by a radial force and, in an unlocked position, the locking collar () is released from the locking shoes (′) by a force acting against the radial force.