Patents Assigned to Portland Zementwerke Heidelberg AG
  • Patent number: 4078703
    Abstract: A large capacity silo for flour-like bulk materials provided with a discharger having a body provided with an inside slanting wall and an annular bottom, a conical hood located above the bottom, broadening downwardly and provided with discharge openings each of which is provided with a shut-off device, a loosening device associated with each of the discharge openings, and a line supplying to the loosening up devices a quantity of pressure air corresponding to the maximum quantity of bulk material for the loosening up process which can be drawn off via the discharge openings, the opening of each shut-off device being designed for maximum discharge.
    Type: Grant
    Filed: October 21, 1976
    Date of Patent: March 14, 1978
    Assignee: Portland Zementwerke Heidelberg AG
    Inventor: Wilfried Dressler