Common link dual arm tensioning device

Patent No. 7,632,200

Issued: December 15, 2009
Filed: June 6, 2005

Inventors: Markley; George L. (Montour Falls, NY), Kuznets; Sam A. (Burdett, NY)
Assignee: BorgWarner Inc. (Auburn Hills, MI)

A chain tensioning device links multiple tensioning arms to a common link, causing the tensioning arms to rotate into and displace chain strands with a single applied force and motion. The two tensioning arms rotate and tension proportionally, and when the pivot pin distances are equal, the two tensioning arms rotate and tension equally. The chain tensioner is preferably used to tension two slack chains flanking an auxiliary drive shaft. The chain tensioner is biased against the chain by a hydraulic tensioning assembly in one embodiment and by a spring tensioning assembly in another embodiment.

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