Patent ID: 8662283
Filing Date: 2014-03-04
Classification: B65G,Y10T

Abstract:
1. A spring tensioner apparatus for a conveyor belt cleaner, the spring tensioner comprising: a mounting plate; an annular collar for being secured to an elongate pole to which the conveyor belt cleaner is mounted; a lever arm connected to the collar and extending radially away therefrom; a spring assembly for applying a bias force to the lever arm which generates a rotary bias force on the collar; an elongate rod for carrying the spring assembly thereon; an arcuate interface between the spring assembly and the lever arm to limit pivoting of the elongate rod for a given amount of rotation of the collar during conveyor belt operation, the arcuate interface comprising curved surfaces of the spring assembly and the lever arm in engagement with each other; and a fixed pivot connection between an end of the elongate rod and the mounting plate so that the rod only undergoes the limited pivoting thereof during conveyor belt operation and does not translate relative to the plate.