US 6358169 B1 abstract an engine tensioning system including a pivoting tensioner arm used to simultaneously tension two separate strands of the same chain in an engine timing system the tensioner arm includes an body with essentially an u201c i u201d shape with upper and lower extending legs with attached shoes in the center of the body a pivot bore and pivot pin allows the body to rotate at least one pair of shoes are attached to the body by way of tabs extending in a perpendicular direction from the legs the body rotates causing the shoes to contact and impart tension to the separate strands of the chain simultaneously and act to dampen vibrations in one strand of chain by transferring the energy through the body to the other shoe and strand application_number US 56221000 A description turning now to the drawings fig1 shows a front view of a preferred embodiment of the present invention in this figure an engine timing system is represented generally by crankshaft sprocket 10 the drive sprocket and camshaft sprocket 12 the driven sprocket the path of a power transmission chain i e a silent chain roller chain or the like is represented by broken chain line 14 the tensioner system of the present invention is located between the tight and loose.