Patents by Inventor Norbert Ahrens

Norbert Ahrens has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Silo for storing and discharging bulk material and method of operating such silo
    Patent number: 4930943
    Abstract: The invention relates to a bulk material silo and method operating such silo, the silo being provided with a central discharge chamber from which a venting channel leads to the peripheral wall of the silo, the side walls of the channel having openings of the material to enter. Such a silo construction ensures a symmetrical material supply to the discharge chamber over the entire periphery.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: June 5, 1990
    Assignee: Krupp Polysius AG
    Inventors: Norbert Ahrens, Wolfgang Kluger, Joachim-Rudolf Mihatsch, Hans-Jurgen Rzadki
  • Silo for loose material in powder form
    Patent number: 4539782
    Abstract: A silo for loose material in powder form having a base provided with a central conical section projecting upwards to form an annular discharge zone having floor portions inclined in a direction leading to an opening in a discharge chamber and in such manner that the material flows approximately tangentially towards the material discharge openings.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: September 10, 1985
    Assignee: Krupp Polysius AG
    Inventors: Norbert Ahrens, Otto Heinemann, Heinrich Klockenbusch, Wolfgang Kluger
  • Method and apparatus for mixing fine material
    Patent number: 4491419
    Abstract: A method and apparatus for mixing fine material in which material is extracted from a level located above the cover of a discharge chamber at the base of a mixing silo and returned to the upper part of the silo. Fresh material is delivered to the upper part of the silo, and in a region that is radially inward of that in which the extracted material is returned.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: January 1, 1985
    Assignee: Krupp Polysius AG
    Inventors: Norbert Ahrens, Helmut Daniel, Gerhard Schacknies
  • Storage and mixing silo for bulk material
    Patent number: 4364665
    Abstract: The invention relates to a storage and mixing silo for bulk material comprising a mixing compartment in the form of an annular chamber. The radial width and the height of the chamber are proportioned to the diameter of the silo, the chamber has a material inlet opening and a material outlet opening circumferentially spaced from one another, and the chamber has a plurality of independently aeratable zones.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: December 21, 1982
    Assignee: Krupp Polysius AG
    Inventors: Norbert Ahrens, Heinrich Klockenbusch
  • Method for feeding powdered material
    Patent number: 4029365
    Abstract: This invention relates to a method and a device for the continuous feed of a controllable amount of powder material from a storage container to a consumer, using a vertical pneumatic conveyor, to which is fed conveying air, with loosening air supplied to the base area.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: June 14, 1977
    Assignee: Polysius AG
    Inventors: Norbert Ahrens, Heinrich Klockenbusch, Horst Ritzmann, Hans Klein, Gerhard Balzau, Clemens Schnuckel