Patent ID: 6322470
Filing Date: 2001-11-27
Classification: F16H

Abstract:
A pivoting dual arm chain tensioner system for a power transmission chain wrapped around a plurality of rotating sprockets, said chain having a pair of strands extending between the sprockets, said tensioner system comprising:a lever, said lever having a first end with a central pivot bore, said pivot bore being located between said pair of strands of said chain, said lever having a second end opposite said first end, said second end having a contact surface;a first fixed pin and a second fixed pin, said first and second fixed pins being fixedly attached to said first end and spaced apart from each other;a first arm disposed on said first fixed pin to permit rotation of said first arm with said first fixed pin about said central pivot bore, said first arm extending outside a first strand of said chain, said first strand being a slack strand, said first arm having a first shoe attached thereto for contacting said slack strand;a second arm disposed on said second fixed pin to permit rotation of said second arm with said second fixed pin about said central pivot bore, said second arm extending outside a second strand of said chain, said second strand being a tight strand, said second arm having a second shoe attached thereto for contacting said tight strand;an actuator positioned to contact said contact surface of said second end of said lever, said actuator acting upon said contact surface of said lever to cause said lever and said first and second fixed pins to rotate about said central pivot bore and to thereby cause movement of said first and second arms and said first and second shoes to impart tension to said chain strands.