Pivoting mechanical tensioner with cross strand damping

Patent No. 7,476,168

Issued: January 13, 2009
Filed: August 15, 2005

Inventors: Markley; George L. (Montour Falls, NY), Wigsten; Mark M. (Lansing, NY), Capp; James (Endwell, NY)
Assignee: BorgWarner Inc. (Auburn Hills, MI)


A closed loop chain tensioner system having a drive sprocket, one or more driven sprockets, a first mechanical tensioner located adjacent a slack strand and a second mechanical tensioner located adjacent a tight strand. Each tensioner is independently pivotally mounted to the engine block. The mounting point may be located at any point along the length of each tensioner. The tensioners are then linked to each other by a rigid, solid link. This solid link enables the tensioners to act in unison, thus providing damping across both strands of chain in response to engine torsional variations.

Reference to Related Applications

This application is related to an application filed simultaneously, entitled, "LONG MECHANICAL TENSIONER WITH A COMPLIANT BLADE SPRING". The aforementioned application is hereby incorporated herein by reference.


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