Patent ID: 8974564
Filing Date: 2015-03-10
Classification: A01D,B01D,F01P,Y10S

Abstract:
1. A screen cleaning system for cleaning a material catching screen surrounded by a frame, the cleaning system comprising: an arm assembly movable over a surface of the screen, the arm assembly including a hollow arm having an aperture in a first side which is adjacent to the surface of the screen, the arm assembly also including a guide roller rotatably mounted to the arm assembly; a hollow duct fixed with respect to the frame, the duct connecting the hollow arm to a source of vacuum pressure; an actuator mechanism for moving the arm assembly so that the aperture draws material off of the screen as the arm assembly moves over the screen; a track formed by the frame, the guide roller riding along the track as the arm assembly moves over the screen, the arm assembly having a rotatable inner arm, and an outer arm slidably coupled to the inner arm; a first bracket is fixed to the inner arm; a second bracket is fixed to the inner arm and is spaced apart from the first bracket; a guide rod is supported between the first and second brackets; and a sleeve is slidable on the guide rod, the outer arm being attached to the sleeve.