Patents by Inventor Volker Niggl

Volker Niggl 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).

  • Publication number: 20190217227
    Abstract: A filter element of a rotating disc filter including an internal space thereof that is limited by one or more perforated and profiled filter plates and is connected to a vacuum source. Efficiency should herein be increased in that the outside of the filter plates that faces away from the internal space has a plurality of elevations, whose cross section is round or elongated and/or at least one filter plate on the outside facing away from internal space has a plurality of elevations of different shapes and/or sizes.
    Type: Application
    Filed: March 21, 2019
    Publication date: July 18, 2019
    Applicant: Voith Patent GmbH
    Inventors: Volker Niggl, Marcella Renzulli, Axel Gommel, Gert Gottschalk
  • Patent number: 7364638
    Abstract: The present invention is directed to a process for the hot dispersing of a paper fiber stock that includes providing an aqueous paper fiber stock and pressing the aqueous fiber stock in a thickening device. In this manner, water is at least partially removed from the aqueous fiber stock to form a highly consistent paper fiber stock. The process further includes heating the highly consistent paper fiber stock, dispersing the heated highly consistent paper fiber stock with a disperser, determining a thermal energy consumed to heat the highly consistent paper fiber stock, and controlling a dewatering effect of the thickening device. The dewatering effect is increased with rising thermal energy consumption and is reduced with a falling thermal energy consumption. 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: Grant
    Filed: May 2, 2003
    Date of Patent: April 29, 2008
    Assignee: Voith Paper Patent GmbH
    Inventors: Pal B. Bendiksen, Axel Gommel, Volker Niggl
  • Publication number: 20070119561
    Abstract: SC paper which is produced from a fibrous stock suspension containing fibers which are partially loaded with ash is characterized in that the ash content in the SC fiber web which was produced from the fibrous stock suspension is higher than 35%, preferably higher than 39%. Newsprint which is produced from a fibrous stock suspension containing fibers which are partially loaded with ash is characterized in that the ash content in the newsprint fiber web which was produced from the fibrous stock suspension is higher than 15%, preferably higher than 19%. Wood-free, uncoated paper which is produced from a fibrous stock suspension containing fibers which are partially loaded with ash is characterized in that the ash content of the wood-free, uncoated fiber web which was produced from the fibrous stock suspension is higher than 15%, preferably higher than 19%.
    Type: Application
    Filed: December 7, 2006
    Publication date: May 31, 2007
    Inventors: Klaus Doelle, Volker Niggl, Bernd Gueldenberg, Holger Humberg
  • Publication number: 20070107860
    Abstract: A machine for producing a fibrous web is characterized in that a measuring arrangement for measuring the ash content is mounted inside the machine, particularly inside the wire section, the press section, the drying section or after the drying section in front of a calendar. This measuring arrangement is connected, via a signal line, to a controller that is mounted inside a device for producing the fibrous material suspension.
    Type: Application
    Filed: December 8, 2006
    Publication date: May 17, 2007
    Inventors: Klaus Doelle, Volker Niggl, Bernd Gueldenberg, Holger Humberg
  • Publication number: 20070107861
    Abstract: The present invention relates to a method and a paper machine for producing a calendered paper web. The method includes the step of partially loading with ash a plurality of fibers of a fibrous stock suspension. The paper machine for the production of a calendered paper web from a fibrous stock suspension including a plurality of fibers which are partially loaded with ash includes a first device for loading a fibrous stock suspension with ash. The first device can include a first static mixer, a preparation unit for adding calcium oxide or calcium hydroxide, a press or a dewatering screw, an equalizing reactor or an equalizing screw, a container serving as a crystallizer, a second static mixer, and a carbon dioxide storage tank or a second device for recovering carbon dioxide.
    Type: Application
    Filed: December 8, 2006
    Publication date: May 17, 2007
    Inventors: Klaus Doelle, Volker Niggl, Bernd Gueldenberg, Holger Humberg
  • Publication number: 20060186235
    Abstract: A method for refining aqueous suspended fibers, the fibers being paper fibers or pulp fibers including the steps of leading, pressing, forming, temporarily attaching, supplying and discharging. The leading step includes leading the aqueous suspended fibers through at least one refining zone which is located between an inside wall of a rotating refiner drum and at least one refiner roll, the refiner roll rotating in association with the refiner drum. The pressing step includes pressing the refiner roll and the refiner drum against each other thereby causing a mechanical refining force to be transferred to the fibers so that strength properties of paper produced therefrom are altered. The forming step includes forming a fibrous stock layer on the inside wall of the rotating refiner by the aqueous suspended paper fibers. The temporarily attaching step includes temporarily attaching the fibrous stock layer to the inside wall due to rotation.
    Type: Application
    Filed: July 21, 2004
    Publication date: August 24, 2006
    Applicant: VOITH PAPER PATENT GMBH
    Inventors: Michael Kramer, Klaus Doelle, Volker Niggl, Paul-Wilhelm Sepke, Hermann Kleinschnittger, Gerhard Gaus, Herbert Holik
  • Publication number: 20060102301
    Abstract: The present invention is directed to a process for the hot dispersing of a paper fiber stock that includes providing an aqueous paper fiber stock and pressing the aqueous fiber stock in a thickening device. In this manner, water is at least partially removed from the aqueous fiber stock to form a highly consistent paper fiber stock. The process further includes heating the highly consistent paper fiber stock, dispersing the heated highly consistent paper fiber stock with a disperser, determining a thermal energy consumed to heat the highly consistent paper fiber stock, and controlling a dewatering effect of the thickening device. The dewatering effect is increased with rising thermal energy consumption and is reduced with a falling thermal energy consumption. 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: May 2, 2003
    Publication date: May 18, 2006
    Applicant: Voith Paper Patent GmbH
    Inventors: Pal Bendiksen, Axel Gommel, Volker Niggl
  • Patent number: 6651839
    Abstract: A method and a dispersing machine for hot dispersing a highly consistent fibrous stock. The machine includes at least one stationary stator that includes a plurality of annular concentric rows of stator teeth. At least one rotating rotor is provided that includes a plurality of annular concentric rows of rotor teeth. An annular dispersing zone is formed by the stator teeth and the rotor teeth whereby the rotor teeth are adapted to rotate adjacent the stator teeth such that a distance is maintained between the stator teeth and the rotor teeth in the annular dispersion zone. An inlet is provided that allows the fibrous stock to enter the dispersion machine. A milling element is centrally arranged on the rotor. The milling element is arranged near the inlet and defines a milling zone. An annular chamber is arranged between the dispersion zone and the milling zone. At least one conduit allows a heating medium to enter the annular chamber.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: November 25, 2003
    Assignee: Voith Paper Patent GmbH
    Inventors: Almut Kriebel, Volker Niggl, Josef Schneid, Hans Schnell
  • Patent number: 6634583
    Abstract: Process and device for dispersing a fibrous paper web which comprises a substantially consistent fibrous paper material. The device includes an inlet for fibrous paper material, a stationary stator, and at least one rotatable rotor. The stator and the at least one rotor form a pulverizing zone including a pulverizing element located near the inlet for the fibrous paper material, the pulverizing element including least one of scrapers and knives for pulverizing the fibrous material into a fine, friable material; a vapor chamber forming a ring about the pulverizing zone, the vapor chamber being for calefying the fine, friable material formed by the pulverizing element; and a dispersing zone including at least one row of teeth on the stator and at least one row of teeth on the at least one rotor which can be moved relative to the at least one row of teeth of the stator.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: October 21, 2003
    Assignee: Voith Paper Patent GmbH
    Inventors: Almut Kriebel, Volker Niggl, Josef Schneid, Hans Schnell, Wolfgang Mannes
  • Publication number: 20020112826
    Abstract: A method and a dispersing machine for hot dispersing a highly consistent fibrous stock. The machine includes at least one stationary stator that includes a plurality of annular concentric rows of stator teeth. At least one rotating rotor is provided that includes a plurality of annular concentric rows of rotor teeth. An annular dispersing zone is formed by the stator teeth and the rotor teeth whereby the rotor teeth are adapted to rotate adjacent the stator teeth such that a distance is maintained between the stator teeth and the rotor teeth in the annular dispersion zone. An inlet is provided that allows the fibrous stock to enter the dispersion machine. A milling element is centrally arranged on the rotor. The milling element is arranged near the inlet and defines a milling zone. An annular chamber is arranged between the dispersion zone and the milling zone. At least one conduit allows a heating medium to enter the annular chamber.
    Type: Application
    Filed: January 18, 2002
    Publication date: August 22, 2002
    Applicant: VOITH PAPER PATENT GmbH
    Inventors: Almut Kriebel, Volker Niggl, Josef Schneid, Hans Schnell
  • Patent number: 6432263
    Abstract: Process for increasing the water retaining ability of fibrous paper stocks. The process includes knead dispersing a fibrous paper stock having a stock concentration of at least about 20% and a temperature greater than about 45° C. A treatment for the knead dispersing is at least about 10 seconds. The process further includes completing a post-treatment phase to a machine tub of a paper machine in a reaction time of no longer than about 30 minutes.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: August 13, 2002
    Assignee: Voith Paper Patent GmbH
    Inventors: Volker Gehr, Almut Kriebel, Volker Niggl, Hans-Ludwig Schubert
  • Publication number: 20010037866
    Abstract: Process and apparatus for dispersing fibrous paper stock that includes delivering an aqueous fibrous paper stock, pressing some water out of the aqueous fibrous paper stock to form a highly consistent coarse fibrous paper stock, and introducing the highly consistent coarse fibrous stock into an effective area of a mallet roll having circulating mallets which cooperate with fixed peripheral impact sections. In this manner, the highly consistent coarse fibrous stock is loosened and distributed. The process also includes transporting the highly consistent fibrous paper stock into a dispersing machine, and dispersing the highly consistent fibrous paper stock in a dispersing machine.
    Type: Application
    Filed: April 12, 2001
    Publication date: November 8, 2001
    Applicant: Voith Paper Patent GmbH
    Inventors: Almut Kriebel, Volker Niggl, Erich Peters, Roland Rauch, Josef Schneid
  • Publication number: 20010015389
    Abstract: Process and device for dispersing a fibrous paper web which comprises a substantially consistent fibrous paper material. The device includes an inlet for fibrous paper material, a stationary stator, and at least one rotatable rotor. The stator and the at least one rotor form a pulverizing zone including a pulverizing element located near the inlet for the fibrous paper material, the pulverizing element including least one of scrapers and knives for pulverizing the fibrous material into a fine, friable material; a vapor chamber forming a ring about the pulverizing zone, the vapor chamber being for calefying the fine, friable material formed by the pulverizing element; and a dispersing zone including at least one row of teeth on the stator and at least one row of teeth on the at least one rotor which can be moved relative to the at least one row of teeth of the stator.
    Type: Application
    Filed: May 4, 2001
    Publication date: August 23, 2001
    Applicant: VOITH SULZER PAPIERTECHNIK PATENT
    Inventors: Almut Kriebel, Volker Niggl, Josef Schneid, Hans Schnell, Wolfgang Mannes
  • Patent number: 6250573
    Abstract: Process for dispersing a fibrous paper web which comprises a substantially consistent fibrous paper material. The process includes loosening and pulverizing a fibrous paper material into a fine, friable fibrous material; guiding the fine, friable fibrous material into a vapor chamber in which at least one of a gaseous and vaporous heating medium mixes, calefies, and disperses the fine, friable fibrous material; and dispersing the fine, friable fibrous material in a disperser zone, the disperser zone and the vapor chamber being located in one device. A device for dispersing a fibrous paper web which comprises a substantially consistent fibrous paper material. The device includes an inlet for fibrous paper material, a stationary stator, and at least one rotatable rotor.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: June 26, 2001
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Almut Kriebel, Volker Niggl, Josef Schneid, Hans Schnell, Wolfgang Mannes
  • Publication number: 20010002616
    Abstract: Process for increasing the water retaining ability of fibrous paper stocks. The process includes knead dispersing a fibrous paper stock having a stock concentration of at least about 20% and a temperature greater than about 45° C. A treatment for the knead dispersing is at least about 10 seconds. The process further includes completing a post-treatment phase to a machine tub of a paper machine in a reaction time of no longer than about 30 minutes.
    Type: Application
    Filed: December 1, 2000
    Publication date: June 7, 2001
    Applicant: Voith Paper Patent GmbH
    Inventors: Volker Gehr, Almut Kriebel, Volker Niggl, Hans-Ludwig Schubert
  • Patent number: 6073865
    Abstract: A process is disclosed that is utilized in particular in the preparation of fibrous material of used paper. Hot fibrous pulp friable materials, which are especially suitable for dispersing, are first formed in a compact, high-consistency fibrous material in the form of a plug. In a preferred embodiment, the plug of materials is pushed against a rotor that is equipped with pulverization elements. The pulverization elements remove the fibrous pulp friable materials and distribute them in a disintegrated condition in a processing chamber. In the processing chamber, super-heated vapor is supplied via vapor supply lines, which calefies the fibrous pulp friable materials, for example, by condensation.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: June 13, 2000
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Almut Kriebel, Volker Niggl, Erich Peters, Josef Schneid, Hans Schnell