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:
Feb. 24, 2004
Filed:
Nov. 22, 2002
David M. Preston, Clarkston, MI (US);
Donald R. Haefner, Troy, MI (US);
David H. Scharnweber, Clinton Township, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A variable valve actuation assembly ( ) to be mounted about a camshaft ( ) including a concentric portion ( ) and an eccentric portion ( ) which orbits the axis of rotation (A ) of the camshaft and defines an axis (A ). The assembly ( ) includes a secondary cam member ( ) surrounding the concentric portion ( ) and including a cam surface ( L). The assembly ( ) also includes an arm assembly ( ) which surrounds the eccentric portion ( ), and defines a longitudinal axis (A ) perpendicular to, and intersecting the axis (A ). The arm assembly ( ) can pivot about a pin ( ), and at the opposite axial end is pivotally connected to the secondary cam member ( ) by means of a pin ( ). Rotation of the camshaft ( ) causes the arm assembly ( ) to pivot about the pin ( ) in one direction, rotating the cam member ( ) to lift the valve ( ), then pivot in the other direction, rotating the cam member ( ) in the opposite direction.