Patents Assigned to Koninklijke Nederlandse Papierfabrieken N.W.
  • Centrifuge
    Patent number: 4141488
    Abstract: A centrifuge for separating liquid and solid materials, comprising an outer drum and an inner drum formed as a worm conveyor. Control means are provided for maintaining a set speed differential between the outer drum and the inner drum at a constant value through a proportional action, and in addition to the proportional action performing a corrective control action on the speed differential upon variation of the torque required.
    Type: Grant
    Filed: August 18, 1977
    Date of Patent: February 27, 1979
    Assignee: Koninklijke Nederlandse Papierfabrieken N.W.
    Inventor: Johannes P. Gense