Patent ID: 6447646
Filing Date: 2002-09-10
Classification: D21G

Abstract:
A doctor assembly in a paper machine, which is intended to clean a moving surface, and which includesa surface against which a doctor blade is set, a blade support for supporting the doctor blade, a frame, a jointed bearing assembly, which supports the doctor blade and is itself supported from the frame, and which is parallel to the doctor blade, and loading devices between the blade support and the frame for turning the doctor blade in relation to the frame and for pressing the doctor blade against the surface with a selected pressure; characterized in that the jointed bearing assembly between the blade support and the frame consists of an operational joint sleeve fixed to one of these components and a concentric operational joint pin fixed to the opposing component, the joint pin being installed to rotate in the joint sleeve, the joint sleeve and joint pin having mutual bearing surfaces, the jointed bearing assembly being formed in such a way that there is a gap parallel to the joint axis in the joint sleeve set in the first component, and the opposing component includes a thin flange area, which extends through the said gap to its joint pin set in the joint sleeve, so that the joint pin can rotate to a limited extent within the joint sleeve with said gap limiting the degree of rotation of the thin flange area and the related joint pin.