Patent ID: 6364796
Filing Date: 2002-04-02
Classification: F16H

Abstract:
A blade tensioner comprising:a base having a face; an arcuately shaped shoe having a first side with a face for sliding engagement with an associated chain, said shoe having a fixed end, said fixed end being fixed to and rotatable around a pin fixed on said base and said shoe having a free end opposite said fixed end, said free end of said shoe being in sliding contact with said face formed on said base; a blade spring provided along said shoe on an opposite side of said shoe, said blade spring having end portions, said end portions of said blade spring being inserted into grooves formed respectively at said fixed end and said free end of said shoe, said groove of said fixed end of said shoe extending toward a tip of said fixed end beyond said pin; wherein said groove of said fixed end of said shoe extends beyond a line (E) drawn perpendicular to said face of said shoe through the center of said pin; wherein said blade spring contacts an end of said groove of said fixed end of said shoe at a point toward said tip of said fixed end beyond said pin; wherein said fixed end and said free end each have a channel formed therein adjacent said blade spring ends, said channel extending in a direction transverse to the longitudinal axis of said shoe; wherein a guide is provided on the slide face of said base adjacent to said free end of said shoe to guide the travel of the free end of said shoe; and wherein said guide is provided with a pair of elements, said elements being located on opposite edges of said slide face, each of said elements of said guide having a convex curved face adjacent said edges of said free end of said shoe.