Patent ID: 6543586
Filing Date: 2003-04-08
Classification: F16D

Abstract:
A scraper assembly for use with a disc brake having a rotatable disc having an annular braking surface disposed thereon and a caliper assembly including a friction shoe for engaging with said annular braking surface on said rotatable disc when said caliper assembly is actuated to retard movement of the disc, said scraper assembly comprising a scraper blade which continually engages with said braking surface on said rotatable disc as said disc rotates to remove dirt, grease, and oil from said braking surface to increase the coefficient of friction of said braking surface to improve the performance of said disc brake, a channel for guiding and supporting said scraper blade in a position in which said scraper blade is engaged with said braking surface on said rotatable disc, a weight associated with said scraper blade biasing said scraper blade through said channel and into engagement with said braking surface of said rotatable disc to remove dirt, grease and oil from said braking surface and wherein the force exerted by said scraper blade on said braking surface of said disc is substantially constant, said scraper blade including a first end for engaging with said braking surface disposed on said disc and a second end for engaging with said weight, said weight exerting a constant force on said second end of said scraper blade to bias the scraper blade through said channel to engage said first end of said scraper blade with said rotating brake surface to remove dirt, grease and oil from said braking surface, said first end of said scraper blade having a rounded cross sectional configuration taken approximately perpendicular to the braking surface to allow the scraper blade to quickly seat on the annular braking surface with which said scraper blade is engaged a stop pin operatively connected with said scraper blade to move therewith and a stop surface on said channel, said stop pin engaging with said stop surface on said channel to prevent further movement of said scraper blade toward said braking surface when said scraper blade wears a predetermined maximum amount.