Patent ID: 6322469
Filing Date: 2001-11-27
Classification: F16H

Abstract:
A dual arm chain tensioner for simultaneously tensioning both strands of a chain travelling around a pair of sprockets in a power transmission system comprising:an anchoring structure, said anchoring structure having at least one bore formed therein;an actuator located on said anchoring structure, said actuator being biased by a spring in an outward direction from said anchoring structure toward one of said chain strands and transverse to the direction of travel of said chain strand;a rod slidably positioned in said bore, said rod sliding in an axial direction substantially parallel to said outward direction of said actuator, said rod having a first end located on one side of said anchoring structure near a first of said pair of chain strands and having a second end opposite said first end near a second of said pair of chain strands;a first tensioner arm secured to said first end of said rod;a first face attached to said first arm, said first face positioned to contact an inside portion of a said first chain strand;a second tensioner arm secured to said second end of said rod;a second face attached to said second arm, said second face positioned to contact an outside portion of said second chain strand;said actuator acting upon one of said first and second arms to cause said first face to impart tension to said first strand of said chain and said second face to impart tension to said second strand of said chain.