Patents Assigned to Fryma Machinen AG
  • Ball mill
    Patent number: 4304362
    Abstract: A ball mill having a housing formed with at least one inner conically cross-sectioned annular wall, in which a displacement body having a conically cross-sectioned annular outer surface is mounted. The housing and displacement body are relatively rotatable and their conical surfaces spaced respectively from each other to define therebetween an annular gap having a conical cross-section for receipt and grinding of solids, liquid and grinding balls, relatively.
    Type: Grant
    Filed: March 15, 1979
    Date of Patent: December 8, 1981
    Assignee: Fryma Machinen AG
    Inventor: Gerhard Buhler