Patents by Inventor Hans Dierken

Hans Dierken 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).

  • Patent number: 8893723
    Abstract: Method and device for removing foreign bodies from a first tobacco stream that is conveyed via an air flow in a region of a first foreign body detection device. Method includes detecting, with a first foreign body detection device, the foreign bodies in the first tobacco stream based on at least one property, and removing, with a jet of compressed air, the foreign bodies from the first tobacco stream. In this manner, a foreign body freed tobacco stream and a second tobacco stream including tobacco particles and the foreign bodies entrained by the jet of compressed air are formed. Method also includes at least one of: accelerating the second stream at a distance from the first tobacco stream; and detecting, with a second foreign body detector, foreign bodies in the second stream based on at least one property and removing the detected foreign bodies with a second jet of compressed air.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: November 25, 2014
    Assignee: Hauni Maschinenbau AG
    Inventors: Matthias Jahnke, Harry Drewes, Torsten Grigutsch, Hans Dierken, David Felts, Jeroen Erinkveld, Diederick van Klaarbergen
  • Patent number: 8281931
    Abstract: An apparatus and method for post-threshing inspection and sorting of tobacco lamina is described and which includes a separation conduit which receives a source of post-threshed tobacco lamina and other contaminants for inspection and sorting, and wherein a source of pressurized air causes the tobacco lamina to move along the separation conduit past an inspection station where it is optically inspected to identify undesirable tobacco lamina or other contaminants; and a downstream reject station is provided which responds to a sorting signal provided by the inspection station and which removes unwanted or undesirable tobacco lamina and other contaminants from an air stream so as to provide a resulting product which is substantially free from contaminants or other defects.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: October 9, 2012
    Assignee: Key Technology, Inc.
    Inventors: Harry Drewes, Wolfgang Benz, Hans Dierken, Peter Funke, Frank Schuster, Cliff J. Leidecker, J. Thomas Higgins
  • Publication number: 20110162666
    Abstract: Method and device for removing foreign bodies from a first tobacco stream that is conveyed via an air flow in a region of a first foreign body detection device. Method includes detecting, with a first foreign body detection device, the foreign bodies in the first tobacco stream based on at least one property, and removing, with a jet of compressed air, the foreign bodies from the first tobacco stream. In this manner, a foreign body freed tobacco stream and a second tobacco stream including tobacco particles and the foreign bodies entrained by the jet of compressed air are formed. Method also includes at least one of: accelerating the second stream at a distance from the first tobacco stream; and detecting, with a second foreign body detector, foreign bodies in the second stream based on at least one property and removing the detected foreign bodies with a second jet of compressed air.
    Type: Application
    Filed: January 7, 2010
    Publication date: July 7, 2011
    Applicant: HAUNI MASCHINENBAU AG
    Inventors: Matthias JAHNKE, Harry DREWES, Torsten GRIGUTSCH, Hans DIERKEN, David FELTS, Jeroen Erinkveld
  • Publication number: 20110067714
    Abstract: An apparatus and method for post-threshing inspection and sorting of tobacco lamina is described and which includes a separation conduit which receives a source of post-threshed tobacco lamina and other contaminants for inspection and sorting, and wherein a source of pressurized air causes the tobacco lamina to move along the separation conduit past an inspection station where it is optically inspected to identify undesirable tobacco lamina or other contaminants; and a downstream reject station is provided which responds to a sorting signal provided by the inspection station and which removes unwanted or undesirable tobacco lamina and other contaminants from an air stream so as to provide a resulting product which is substantially free from contaminants or other defects.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 24, 2011
    Inventors: Harry Drewes, Wolfgang Benz, Hans Dierken, Peter Funke, Frank Schuster, Cliff J. Leidecker, J. Thomas Higgins
  • Publication number: 20060191807
    Abstract: Container of the tobacco-processing industry for tobacco material and process for storing containers and weighing tobacco material held in container. The container includes a lid surface and a base surface. The lid surface is smaller than the base surface, and at least one of the lid surface and the base surface is closable. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
    Type: Application
    Filed: April 14, 2006
    Publication date: August 31, 2006
    Applicant: HAUNI PRIMARY GmbH,
    Inventors: Hans Dierken, Kai Burfeind, Wolfgnag Denker, Angela Litzenberg, Uwe Nittel, Wolfgang Benz, Rolf Hoefig, Frank Schuster
  • Patent number: 6332543
    Abstract: There is provided an apparatus which can simplify, expedite and enhance the segregation of undesirable particles from desirable particles in a multiple-layer flow wherein the desirable and undesirable particles are randomly intermixed with each other. This is accomplished by a stepwise reduction of the thickness of the flow to thus locate all or nearly all undesirable particles at or close to the exposed sides of the resulting relatively thin flow so that the undesirable particles can be readily detected and segregated from the thin flow.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: December 25, 2001
    Assignee: Hauni Maschinenbau AG
    Inventors: Heiko Niehues, Torsten Koch, Renke Schlarmann, Harry Drewes, Hans Dierken
  • Patent number: 5558199
    Abstract: An apparatus for manipulating a multilayer stream of tobacco particles with randomly intermixed foreign particles has a vibratory conveyor which advances the stream toward and discharges successive increments of the stream onto the upper reach of an endless belt or chain serving to advance the increments at a speed exceeding the speed of advancement of the stream by the vibratory conveyor. The endless belt or chain discharges a single layer of tobaco particles and foreign particles, and such single layer is caused to move past a segregating unit which detects and expels foreign particles therefrom.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: September 24, 1996
    Assignee: Hauni Maschinenbau Aktiengesellschaft
    Inventors: Friedemann Roether, Heiko Niehues, Uwe Leckband, Harry Drewes, Horst-Udo Christ, Hans Dierken