Patents Assigned to Ingeniorsfirman R. Frykhult AB
  • Rotatable annular hollow disc for filtering liquids
    Patent number: 5316675
    Abstract: A disc filtering apparatus for filtering liquids, such as fiber pulps suspensions, includes hollow filter discs, each of which has two opposed side walls of filter material. A plurality of circumferentially spaced support arms extend within each hollow filter disc, for supporting the side walls of filter material. Between the support arms, each side wall of filter material is supported by at least one wire member extending substantially along the filter disc and attached to the support arms.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: May 31, 1994
    Assignee: Ingeniorsfirman R. Frykhult AB
    Inventor: Rune Frykhult