Patents Assigned to Wachter KG Hindeland
  • Mixing tube for drying building materials
    Patent number: 4402615
    Abstract: This case is drawn towards an apparatus which mixes dry building materials. The building materials are mixed with air and water in a continuously flowing manner. The apparatus has a mixing tube with a rotating shaft. The materials are fed into the tube in its upward portion, moves downward passing a series of supporting plates which are attached to the sides of the tube in the conical shaft alternatively in a conically sloping manner.
    Type: Grant
    Filed: August 29, 1980
    Date of Patent: September 6, 1983
    Assignee: Wachter KG Hindeland
    Inventor: Karl M. Mayer