Patents Assigned to Bollegraaf Beheer Appingedam B.V.
  • Patent number: 7341154
    Abstract: A water bath separator includes a tank for receiving a volume of water for forming a water bath having a top water surface and a light material conveyor path extending from the tank such that an upstream end of the light material conveyor path is closely below the top water surface when the tank is in filled operating condition. The light material conveyor path includes a sorting conveyor provided with a row of rotatable, driven shafts mutually spaced in a conveying direction and each extending transversally to that conveying direction. The shafts each carry a row of radially extending impellers for intermittently urging material on the sorting conveyor upward and in conveying direction, the impellers of each of said rows being mutually spaced in longitudinal direction of the respective shaft. The sorting conveyor has an upstream portion located in the tank such that an upstream end of the sorting conveyor is immersed in the water bath when the tank is in filled operating condition.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: March 11, 2008
    Assignee: Bollegraaf Beheer Appingedam B.V.
    Inventor: Pieter Boer
  • Patent number: 7000779
    Abstract: Device for separating fine fractions and coarse fractions from bulk goods, comprising a frame and a screen plane supported by it for supporting the coarse fraction and allowing the fine fraction to pass through, the screen plane being formed by a number of screen disks, that have been arranged in groups and detachably on rotating driven shafts, the shafts on both sides being bearing mounted with bearing ends in first and second bearings on the frame and at at least one end being in driven engagement with driving means, the bearing ends being divided into a shaft member permanent to the shaft and a bearing member bearing mounted in the first and second bearings on the frame, which bearing member inter-engages with the permanent shaft member for co-rotation therewith, wherein in both bearing ends the permanent shaft member and the bearing member can be coupled to each other and can be uncoupled from each other by a movement of the shaft transverse to the main direction of the shaft.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: February 21, 2006
    Assignee: Bollegraaf Beheer Appingedam B.V.
    Inventor: Derk Abel Smook
  • Publication number: 20030183561
    Abstract: Device for separating fine fractions and coarse fractions from bulk goods, comprising a frame and a screen plane supported by it for supporting the coarse fraction and allowing the fine fraction to pass through, the screen plane being formed by a number of screen disks, that have been arranged in groups and detachably on rotating driven shafts, the shafts on both sides being bearing mounted with bearing ends in first and second bearings on the frame and at at least one end being in driven engagement with driving means, the bearing ends being divided into a shaft member permanent to the shaft and a bearing member bearing mounted in the first and second bearings on the frame, which bearing member inter-engages with the permanent shaft member for co-rotation therewith, wherein in both bearing ends the permanent shaft member and the bearing member can be coupled to each other and can be uncoupled from each other by a movement of the shaft transverse to the main direction of the shaft.
    Type: Application
    Filed: March 26, 2003
    Publication date: October 2, 2003
    Applicant: BOLLEGRAAF BEHEER APPINGEDAM B.V.
    Inventor: Derk Abel Smook