Patents by Inventor Werner Witek
Werner Witek 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).
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Patent number: 7179347Abstract: A method for the preparation of fiber stock for the production of paper or cardboard, including the steps of: a) Supplying fibers in the form of a suspension that has a predetermined solids content, b) Loading of the fibers with a precipitation product, without refining the stock, c) Refining of the fibers after completion of the loading process, in order to improve the freeness value and/or to alter the fiber characteristics, and d) Transporting of the fiber stock suspension in direction of the paper machine.Type: GrantFiled: September 26, 2003Date of Patent: February 20, 2007Assignee: VOITH Paper Patent GmbHInventors: Joerg Rheims, Oliver Heise, Klaus Doelle, Ronald Sigl, Werner Witek
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Patent number: 7169258Abstract: A device treats a fiber stock suspension with at least one additive, the fiber stock suspension being used for production of at least one of paper and cardboard. The fiber stock suspension includes a suspension medium and a fiber material. The fiber material has fiber surfaces, the fiber surfaces being moistened by the suspension medium. The device includes a fluffer having an inlet for receiving at least one of the fiber stock suspension and the at least one additive. The fluffer is coupled to the inlet, the fluffer being configured for separating the fiber material and enlarging a specific surface of the fiber surfaces.Type: GrantFiled: May 23, 2001Date of Patent: January 30, 2007Assignee: Voith Paper Patent GmbHInventors: Jörg Rheims, Klaus Doelle, Oliver Heise, Werner Witek, Shawn Flanigan, Robert J. Matz
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Patent number: 6881298Abstract: For a process and an apparatus for loading fibers contained in a pulp suspension with calcium carbonate, a calcium oxide and/or a medium containing calcium hydroxide is fed to the pulp suspension, and the so treated pulp suspension is further charged in several reactors with pure carbon dioxide or a medium containing carbon dioxide. The reactors can be connected in series and/or in parallel.Type: GrantFiled: February 19, 2003Date of Patent: April 19, 2005Assignee: Voith Paper Patent GmbHInventors: Jörg Rheims, Klaus Doelle, Oliver Heise, Werner Witek
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Publication number: 20040226677Abstract: A device treats a fiber stock suspension with at least one additive, the fiber stock suspension being used for production of at least one of paper and cardboard. The fiber stock suspension includes a suspension medium and a fiber material. The fiber material has fiber surfaces, the fiber surfaces being moistened by the suspension medium. The device includes a fluffer having an inlet for receiving at least one of the fiber stock suspension and the at least one additive. The fluffer is coupled to the inlet, the fluffer being configured for separating the fiber material and enlarging a specific surface of the fiber surfaces.Type: ApplicationFiled: June 22, 2004Publication date: November 18, 2004Applicant: Voith Paper Patent GmbHInventors: Jorg Rheims, Klaus Doelle, Oliver Heise, Werner Witek, Shawn Flanigan, Robert J. Matz
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Publication number: 20040154771Abstract: A method and a device for loading of fibers that are contained in a fibrous suspension, with a filler by way of a chemical precipitation reaction. A fibrous suspension is supplied to a pump disperger where it is treated by shear forces in order to break down larger fiber agglomerates into smaller ones, and/or into individual fibers. At the same time the pump disperger serves as a reactor for the chemical precipitation reaction.Type: ApplicationFiled: August 14, 2003Publication date: August 12, 2004Inventors: Joerg Rheims, Oliver Heise, Klaus Doelle, Ronald Sigl, Werner Witek
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Publication number: 20040149403Abstract: A method for the preparation of fiber stock for the production of paper or cardboard, including the steps of:Type: ApplicationFiled: September 26, 2003Publication date: August 5, 2004Inventors: Joerg Rheims, Oliver Heise, Klaus Doelle, Ronald Sigl, Werner Witek
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Patent number: 6755941Abstract: For a process and an apparatus for loading fibers contained in a pulp suspension with calcium carbonate, a calcium oxide and/or a medium containing calcium hydroxide is fed to the pulp suspension, and the so treated pulp suspension is further charged in several reactors with pure carbon dioxide or a medium containing carbon dioxide. The reactors can be connected in series and/or in parallel.Type: GrantFiled: March 14, 2002Date of Patent: June 29, 2004Assignee: Voith Paper Patent GmbHInventors: J{overscore (o)}rg Rheims, Klaus Doelle, Oliver Heise, Werner Witek
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Patent number: 6599390Abstract: For a process and an apparatus for loading fibers contained in a pulp suspension with calcium carbonate, a calcium oxide and/or a medium containing calcium hydroxide is fed to the pulp suspension, and the so treated pulp suspension is further charged in several reactors with pure carbon dioxide or a medium containing carbon dioxide. The reactors can be connected in series and/or in parallel. The reactor can produce different forms of calcium carbonate.Type: GrantFiled: July 12, 2001Date of Patent: July 29, 2003Assignee: Voith Paper Patent GmbHInventors: Jörg Rheims, Klaus Doelle, Oliver Heise, Werner Witek
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Publication number: 20030121624Abstract: For a process and an apparatus for loading fibers contained in a pulp suspension with calcium carbonate, a calcium oxide and/or a medium containing calcium hydroxide is fed to the pulp suspension, and the so treated pulp suspension is further charged in several reactors with pure carbon dioxide or a medium containing carbon dioxide. The reactors can be connected in series and/or in parallel.Type: ApplicationFiled: February 19, 2003Publication date: July 3, 2003Applicant: Voith Paper Patent GmbHInventors: Jorg Rheims, Klaus Doelle, Oliver Heise, Werner Witek
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Patent number: 6537425Abstract: During the chemical process of loading with calcium carbonate fibers contained in a pulp suspension, a medium containing calcium oxide or calcium hydroxide is added to the pulp suspension. This treated pulp suspension is charged in at least one reactor with pure carbon dioxide (or a medium containing carbon dioxide), which, during the progression of the reaction, converts at least a significant portion of the starting materials (calcium oxide and/or calcium hydroxide and carbon dioxide) into the reaction products, calcium carbonate and water. This reaction is accomplished by properly controlling the pulp suspension's pH.Type: GrantFiled: July 11, 2001Date of Patent: March 25, 2003Assignee: Voith Paper Patent GmbHInventors: Jörg Rheims, Klaus Doelle, Oliver Heise, Werner Witek
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Patent number: 6524443Abstract: A paper machine includes a traveling belt for carrying a fiber web, and a cutting device disposed below the belt for cutting the fiber web into smaller pieces. The cutting device has an inlet and an outlet. A guiding device guides the fiber web from the belt to the inlet of the cutting device. A pulper is connected with the outlet of the cutting device for receiving the smaller pieces of fiber web from the cutting device. The traveling belt may be in the form of, e.g., a wire, felt or water impervious belt. The cutting device may be in the form of, e.g., a shredder, fluffer, water jet cutter, laser cutter and/or roll cutter.Type: GrantFiled: March 15, 2002Date of Patent: February 25, 2003Assignee: Voith Sulzer Paper Technology North America, Inc.Inventors: Klaus Doelle, Werner Witek, Robert J. Matz
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Patent number: 6503466Abstract: An apparatus for continuously loading fibers in a fiber suspension with a chemical compound includes a deflocculating vessel having an interior chamber, a fluid inlet connected with the interior chamber, a fluid outlet connected with the interior chamber, and a high shear imparting device disposed within the interior chamber for imparting high shear forces to and thereby deflocculating the fiber suspension. A mixing container has an interior compartment, a fluid inlet connected with both the interior compartment and the fluid outlet of the deflocculating vessel, a fluid outlet connected with the interior compartment, and a low shear imparting device within the interior compartment for imparting low shear forces to the fiber suspension. A gas supply is connected with the interior chamber of the deflocculating vessel and/or the interior compartment of the mixing container. The gas supply is configured for supplying a gas to and pressurizing each of the deflocculating vessel and the mixing container.Type: GrantFiled: August 6, 1998Date of Patent: January 7, 2003Assignee: Voith Sulzer Paper Technology North America, Inc.Inventors: Klaus Doelle, Kurt William Lorenz, Oliver U. Heise, Werner Witek, Robert J. Matz
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Method for deflocculating and chemically loading fibers in a fiber suspension with calcium carbonate
Patent number: 6471825Abstract: An apparatus for continuously loading fibers in a fiber suspension with a chemical compound includes a deflocculating vessel having an interior chamber, a fluid inlet connected with the interior chamber, a fluid outlet connected with the interior chamber, and a high shear imparting device disposed within the interior chamber for imparting high shear forces to and thereby deflocculating the fiber suspension. A mixing container has an interior compartment, a fluid inlet connected with both the interior compartment and the fluid outlet of the deflocculating vessel, a fluid outlet connected with the interior compartment, and a low shear imparting device within the interior compartment for imparting low shear forces to the fiber suspension. A gas supply is connected with the interior chamber of the deflocculating vessel and/or the interior compartment of the mixing container. The gas supply is configured for supplying a gas to and pressurizing each of the deflocculating vessel and the mixing container.Type: GrantFiled: June 28, 2000Date of Patent: October 29, 2002Assignee: Voith Sulzer Paper Technology North Amrica, Inc.Inventors: Klaus Doelle, Kurt William Lorenz, Oliver U. Heise, Werner Witek, Robert J. Matz -
Publication number: 20020092636Abstract: For a process and an apparatus for loading fibers contained in a pulp suspension with calcium carbonate, a calcium oxide and/or a medium containing calcium hydroxide is fed to the pulp suspension, and the so treated pulp suspension is further charged in several reactors with pure carbon dioxide or a medium containing carbon dioxide. The reactors can be connected in series and/or in parallel.Type: ApplicationFiled: March 14, 2002Publication date: July 18, 2002Applicant: Voith Paper Patent GmbHInventors: Jorg Rheims, Klaus Doelle, Oliver Heise, Werner Witek
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Publication number: 20020088588Abstract: A paper machine includes a traveling belt for carrying a fiber web, and a cutting device disposed below the belt for cutting the fiber web into smaller pieces. The cutting device has an inlet and an outlet. A guiding device guides the fiber web from the belt to the inlet of the cutting device. A pulper is connected with the outlet of the cutting device for receiving the smaller pieces of fiber web from the cutting device. The traveling belt may be in the form of, e.g., a wire, felt or water impervious belt. The cutting device may be in the form of, e.g., a shredder, fluffer, water jet cutter, laser cutter and/or roll cutter.Type: ApplicationFiled: March 15, 2002Publication date: July 11, 2002Applicant: Voith Sulzer Paper Technology North America, Inc.Inventors: Klaus Doelle, Werner Witek, Robert J. Matz
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Patent number: 6394279Abstract: A flotation machine is provided which includes at least one flotation cell having an inner chamber. The fiber suspension is transported into the inner chamber, and a gas is injected into the fiber suspension within the inner chamber at a temperature below 20° C. to cause the wax to clump within the fiber suspension. The clumped wax is removed from the fiber suspension.Type: GrantFiled: June 16, 2000Date of Patent: May 28, 2002Assignee: Voith Sulzer Paper Technology North America, Inc.Inventors: Klaus Doelle, Werner Witek, Oliver U. Heise, Bangji Cao
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Patent number: 6395131Abstract: A flotation machine is provided which includes at least one flotation cell having an inner chamber. The fiber suspension is transported into the inner chamber, and a gas is injected into the fiber suspension within the inner chamber at a temperature above 100° C. to decrease the density of the wax within the fiber suspension. The wax is removed from the fiber suspension.Type: GrantFiled: September 19, 2000Date of Patent: May 28, 2002Assignee: Voith Sulzer Paper Technology North America, Inc.Inventors: Klaus Doelle, Werner Witek, Oliver U. Heise, Bangji Cao
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Patent number: 6358367Abstract: A paper machine includes a traveling belt for carrying a fiber web, and a cutting device disposed below the belt for cutting the fiber web into smaller pieces. The cutting device has an inlet and an outlet. A guiding device guides the fiber web from the belt to the inlet of the cutting device. A pulper is connected with the outlet of the cutting device for receiving the smaller pieces of fiber web from the cutting device. The traveling belt may be in the form of, e.g., a wire, felt or water impervious belt. The cutting device may be in the form of, e.g., a shredder, fluffer, water jet cutter, laser cutter and/or roll cutter.Type: GrantFiled: February 1, 2000Date of Patent: March 19, 2002Assignee: Voith Sulzer Paper Technology North America, Inc.Inventors: Klaus Doelle, Werner Witek, Robert J. Matz
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Publication number: 20020026989Abstract: During the chemical process of loading with calcium carbonate fibers contained in a pulp suspension, a medium containing calcium oxide or calcium hydroxide is added to the pulp suspension. This treated pulp suspension is charged in at least one reactor with pure carbon dioxide (or a medium containing carbon dioxide), which, during the progression of the reaction, converts at least a significant portion of the starting materials (calcium oxide and/or calcium hydroxide and carbon dioxide) into the reaction products, calcium carbonate and water. This reaction is accomplished by properly controlling the pulp suspension's pH.Type: ApplicationFiled: July 11, 2001Publication date: March 7, 2002Inventors: Jorg Rheims, Klaus Doelle, Oliver Heise, Werner Witek
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Publication number: 20020007925Abstract: For a process and an apparatus for loading fibers contained in a pulp suspension with calcium carbonate, a calcium oxide and/or a medium containing calcium hydroxide is fed to the pulp suspension, and the so treated pulp suspension is further charged in several reactors with pure carbon dioxide or a medium containing carbon dioxide. The reactors can be connected in series and/or in parallel.Type: ApplicationFiled: July 12, 2001Publication date: January 24, 2002Inventors: Jorg Rheims, Klaus Doelle, Oliver Heise, Werner Witek