Patent ID: 6161512
Filing Date: 2000-12-19
Classification: F16F,F16H,Y10T

Abstract:
A sprocket system for an engine timing drive comprising:a crankshaft having a crankshaft drive sprocket;said crankshaft drive sprocket comprising a sprocket rim and a central annular portion, said sprocket rim having teeth for engaging a chain,a hub member positioned upon and fastened to the crankshaft adjacent to said crankshaft drive sprocket;said hub member having three hub locators extending radially outwardly from the periphery of said hub and evenly spaced circumferentially around said hub member;said crankshaft drive sprocket having three rotational stops evenly spaced circumferentially around said sprocket rim and extending inwardly from said sprocket rim;friction plates attached to the hub adjacent to said hub member positioned to contact said hub member radially inwardly of said hub locators in order to provide friction therebetween,wherein each said hub locator is located between two of said rotational stops.