Patent ID: 7347315

Claim:
A conveyor belt system including a scraper blade for cleaning a conveyor belt as the belt travels about a head or tail pulley, the conveyor belt system comprising: an elongate support member at a position generally lower than the pulley and having a length which extends in a lateral direction across the conveyor belt toward either side thereof; an upper scraper member having a scraper tip with the upper scraper member configured to extend in the lateral direction and transversely relative to the lateral direction toward the pulley for engaging the conveyor belt traveling thereabout; a lower base member that supports the scraper member to keep the tip engaged with the belt with the lower base member extending in the lateral direction and transversely relative to the lateral direction away from the support member generally tangentially relative to the conveyor belt extending about the pulley and upwardly toward the upper scraper member so that the upper scraper member and the lower base member generally extend transverse to each other in directions transverse to the lateral direction; at least one mounting arm that extends from the scraper member and has an end portion with a predetermined configuration; a mounting opening in the base member that has substantially the same predetermined configuration as the mounting arm end portion to allow the end portion to be tightly received in the opening in a direction substantially parallel to the lateral direction; lower and opposite side wall portions of the base member below and extending up along the arm end portion received in the base member opening to resist shifting of the scraper member due to scraping forces between the tip and belt, wherein the scraper member and the base member include engaging surfaces with the mounting arm end portion received in the base member opening, and a plurality of teeth on one of the engaging surfaces that grip the other engaging surface to retain the scraper member and base member secured together.