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. 17, 2012
Filed:
Sep. 15, 2009
Applicants:
Craig D. Marriott, Clawson, MI (US);
Hong Wai Nguyen, Troy, MI (US);
Ronald Jay Pierik, Holly, MI (US);
Inventors:
Craig D. Marriott, Clawson, MI (US);
Hong Wai Nguyen, Troy, MI (US);
Ronald Jay Pierik, Holly, MI (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A camshaft assembly may include a first shaft adapted to be rotationally driven, a first lobe member fixed for rotation with the first shaft, and a torsional damper fixed to the first shaft. The torsional damper may include a mass structure fixed to the first shaft and an elastic member disposed between and coupling the mass structure and the first shaft. The elastic member may have a spring constant providing a first sideband natural frequency and a second sideband natural frequency for the camshaft assembly.