Patents by Inventor Bernhard Holzapfel
Bernhard Holzapfel 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: 10604898Abstract: A rail-bound maglev train comprising a guide rail which predefines a travel path, having at least one supra-conductive element (2) and a levitating vehicle which is arranged on the guide rail and has magnetic means (6), wherein the magnetic means interact magnetically in a contactless fashion with the travel path, and at least one supra-conductive element (2) comprises at least one supra-conductive conductor parallel to the travel path (4), and the at least one supra-conductive conductor has at least two electrical connections, wherein the respective at least two connections bound, on a strip, a strip section, arranged between said connections, as a continuous supra-conductive electrical line.Type: GrantFiled: February 9, 2016Date of Patent: March 31, 2020Assignee: KARLSRUHER INSTITUT FUER TECHNOLOGIEInventors: Mathias Noe, Bernhard Holzapfel
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Patent number: 10153071Abstract: The present invention relates to a method and an apparatus for producing superconducting devices and to superconducting devices. The method comprises determining one or more regions of reduced critical current density in the superconducting device and modifying the critical current density in the one or more regions of reduced critical current density, so as to increase the overall critical current or to decrease the overall AC losses of the superconducting device. The modifying comprises modifying the amount and/or distribution of the superconducting material in the one or more regions of reduced critical current density; and/or modifying the chemical composition of the superconducting material in the one or more regions of reduced critical current density; and/or decreasing the cooling temperature in the one or more regions of reduced critical current density. A superconducting device formed according to such method can also be provided.Type: GrantFiled: August 6, 2015Date of Patent: December 11, 2018Assignee: KARLSRUHER INSTITUT FUER TECHNOLOGIEInventors: Victor Manuel Rodriguez Zermeno, Bernhard Holzapfel
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Publication number: 20180030662Abstract: A rail-bound maglev train comprising a guide rail which predefines a travel path, having at least one supra-conductive element (2) and a levitating vehicle which is arranged on the guide rail and has magnetic means (6), wherein the magnetic means interact magnetically in a contactless fashion with the travel path, and at least one supra-conductive element (2) comprises at least one supra-conductive conductor parallel to the travel path (4), and the at least one supra-conductive conductor has at least two electrical connections, wherein the respective at least two connections bound, on a strip, a strip section, arranged between said connections, as a continuous supra-conductive electrical line.Type: ApplicationFiled: February 9, 2016Publication date: February 1, 2018Applicant: Karlsruher Institut fuer TechnologieInventors: Mathias Noe, Bernhard Holzapfel
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Publication number: 20160042841Abstract: The present invention relates to a method and an apparatus for producing superconducting devices and to superconducting devices. The method comprises determining one or more regions of reduced critical current density in the superconducting device and modifying the critical current density in the one or more regions of reduced critical current density, so as to increase the overall critical current or to decrease the overall AC losses of the superconducting device. The modifying comprises modifying the amount and/or distribution of the superconducting material in the one or more regions of reduced critical current density; and/or modifying the chemical composition of the superconducting material in the one or more regions of reduced critical current density; and/or decreasing the cooling temperature in the one or more regions of reduced critical current density. A superconducting device formed according to such method can also be provided.Type: ApplicationFiled: August 6, 2015Publication date: February 11, 2016Inventors: Victor Manuel Rodriguez Zermeno, Bernhard Holzapfel
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Patent number: 9257628Abstract: Known processes for the production of nanoparticles of compounds of the transition metals Zr, Ti, Ta, rare earths (RE), Mn, and Fe via microemulsions lead to products that contain impurities from the reactants, particularly water, which make the further use of said nanoparticles difficult, for instance in high-temperature super conductors (HTSC). It is proposed that the nanoparticles be produced via anhydrous microemulsions having an outer phase composed of a nonpolar solvent and inner phase composed of a polar anhydrous solvent. The nanoparticles thus obtained exhibit good monodispersity and can be used in the production of REBa2Cu3O7 super conductors by incorporation into the precursor coating solution.Type: GrantFiled: March 20, 2013Date of Patent: February 9, 2016Assignee: BASF SEInventors: Thomas Freudenberg, Bernhard Holzapfel, Oliver Brunkahl, Michael Baecker
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Publication number: 20150072863Abstract: Known processes for the production of nanoparticles of compounds of the transition metals Zr, Ti, Ta, rare earths (RE), Mn, and Fe via microemulsions lead to products that contain impurities from the reactants, particularly water, which make the further use of said nanoparticles difficult, for instance in high-temperature super conductors (HTSC). It is proposed that the nanoparticles be produced via anhydrous microemulsions having an outer phase composed of a nonpolar solvent and inner phase composed of a polar anhydrous solvent. The nanoparticles thus obtained exhibit good monodispersity and can be used in the production of REBa2Cu3O7 super conductors by incorporation into the precursor coating solution.Type: ApplicationFiled: March 20, 2013Publication date: March 12, 2015Applicant: BASF SEInventors: Thomas Freudenberg, Bernhard Holzapfel, Oliver Brunkahl, Michael Baecker
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Patent number: 8465605Abstract: A nickel-based semi-finished product, for making a high-temperature superconductor, embodied in the form of a strip or flat wire is produced and used as a base for physical-chemical coatings provided with a high-quality intense microstructural orientation. The semi-finished product has an improved granular structure provided with a stable cube texture. A fusion or powder metallurgy process including mechanical alloys makes a semi-finished product including a technically pure Ni or Ni alloy containing an Ag additive in a specified microalloy range. The product is shaped as a strip or flat wire by hot- and cold forming processes with a thickness reduction >50% The product is softened by annealing at 500 to 850° C. and is subsequently quenched. Afterwards, the product is exposed to the 80% cold shaping. A recrystallization annealing treatment is carried out to obtain an entire cubic texture.Type: GrantFiled: March 15, 2006Date of Patent: June 18, 2013Assignee: Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden e.V.Inventors: Jörg Eickemeyer, Dietmar Selbmann, Horst Wendrock, Bernhard Holzapfel
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Patent number: 7763569Abstract: A wet-chemical method for producing strip-shaped high-temperature superconductors with a substrate, optionally with a buffer layer and with a high-temperature superconductive layer is improved by increasing the texturing and the layer thickness of the high-temperature superconductive layer. To this end, precursor solutions are applied in layers to the substrate, of which the first is low in fluorine or does not contain fluorine, and the following have a fluorine concentration that increases with each layer.Type: GrantFiled: February 26, 2007Date of Patent: July 27, 2010Assignee: Zenergy Power GmbHInventors: Michael Bäcker, Brigitte Schlobach, Kerstin Knoth, Barbara Schüpp-Niewa, Bernhard Holzapfel, Martina Falter
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Publication number: 20090008000Abstract: The invention relates to a method for producing and using a nickel-based semi-finished product embodied in the form of a strip or flat wire. The aim of the invention is to develop a method for producing a nickel-based semi-finished product which exhibits improved performance characteristics for the use in the form of a base for physical-chemical coatings provided with a high-quality intense microstructural orientation. The semi-finished product should have an improved granular structure provided with a stable cube texture.Type: ApplicationFiled: March 15, 2006Publication date: January 8, 2009Applicant: LEIBNIZ-INSTITUT FÜR FESTKÖRPER-UND WERKSTOFFFORSCInventors: Jorg Eickemeyer, Dietmar Selbmann, Horst Wendrock, Bernhard Holzapfel
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Publication number: 20070234542Abstract: Method for producing metallic flat wires or strips with a cube texture that can be used, for example, as a base for physical-chemical coatings. The products can be produced after the last forming step in their finished width without further processing of the edges. The method includes processing a material based on nickel, copper, gold, or silver into a wire by a cold drawing method, achieving a total cross-sectional reduction ?g?75% or a logarithmic deformation ?g?1.4, and the wire is then further processed by further forming and annealing methods into a flat wire or a strip with a cube texture and having a width that can be adjusted in a defined manner.Type: ApplicationFiled: August 20, 2004Publication date: October 11, 2007Inventors: Joerg Eickemeyer, Dietmar Selbmann, Ralph Opitz, Bernhard Holzapfel, Horst Wendrock
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Publication number: 20070197397Abstract: A wet-chemical method for producing strip-shaped high-temperature superconductors with a substrate, optionally with a buffer layer and with a high-temperature superconductive layer is improved by increasing the texturing and the layer thickness of the high-temperature superconductive layer. To this end, precursor solutions are applied in layers to the substrate, of which the first is low in fluorine or does not contain fluorine, and the following have a fluorine concentration that increases with each layer.Type: ApplicationFiled: February 26, 2007Publication date: August 23, 2007Applicant: TRITHOR GMBHInventors: Michael Backer, Brigitte Schlobach, Kerstin Knoth, Barbara Schupp-Niewa, Bernhard Holzapfel, Martina Falter
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Publication number: 20070062613Abstract: A nickel-based semifinished product has a cube recrystallization texture and the semifinished product can e.g. be used as a support for physicochemical coatings having a highly microstructured orientation. Such supports are e.g. suitable as substrates for ceramic coatings such as are used in the field of high-temperature supraconductivity. In this case, the product is used in supraconducting magnets, transformers, motors, tomographs and supraconducting current paths. There is provided a nickel-based semifinished product that has improved performance characteristics when used as a support for physicochemical coatings having a highly microstructured orientation. Especially the semifinished product should have a higher-grade, thermally more stable cube texture while substantially preventing the formation of grain boundary grooving. For this purpose, Ag in the microalloy range is added to the material of the semifinished product, the added Ag being not more than 0.3 atomic percent.Type: ApplicationFiled: September 8, 2004Publication date: March 22, 2007Inventors: Joerg Eickemeyer, Dietmar Selbmann, Ralph Opitz, Bernhard Holzapfel
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Patent number: 6908691Abstract: The aim of the invention is to provide a metal strip for epitaxial coating with a biaxially textured layer, this metal strip, however, being able to be produced in an uncomplicated manner and having a high tensile strength, low magnetic losses and/or a high electrical conductivity. According to the invention, the metal strip is comprised of Nj, Cu, Ag or alloys thereof all serving as basic material, whereby the one-layer metal strip and, in the instance of a multilayer metal strip, at least one of its layers contains 10 nm to 5 ?m large, strength-increasing dispersoids comprised of carbides, borides, oxides and/or nitrides with a volume proportion ranging from 0.1 to 5%. In the instance of a multilayer metal strip, the layers form a composite, and at least one of the layers does not contain any dispersoids and has a biaxial texture. For the production, a starting material is used, which is comprised of Ni, Cu, Ag or of alloys thereof all serving as basic material and which contains 0.Type: GrantFiled: December 5, 2001Date of Patent: June 21, 2005Assignee: Institut fuer Festkoerper-und Werkstoffforschung Dresden e.V.Inventors: Bernd De Boer, Bernhard Holzapfel, Gunter Risse
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Publication number: 20050031890Abstract: The aim of the invention is to provide a metal strip for epitaxial coating with a biaxially textured layer, this metal strip, however, being able to be produced in an uncomplicated manner and having a high tensile strength, low magnetic losses and/or a high electrical conductivity. According to the invention, the metal strip is comprised of Nj, Cu, Ag or alloys thereof all serving as basic material, whereby the one-layer metal strip and, in the instance of a multilayer metal strip, at least one of its layers contains 10 nm to 5 ?m large, strength-increasing dispersoids comprised of carbides, borides, oxides and/or nitrides with a volume proportion ranging from 0.1 to 5%. In the instance of a multilayer metal strip, the layers form a composite, and at least one of the layers does not contain any dispersoids and has a biaxial texture. For the production, a starting material is used, which is comprised of Ni, Cu, Ag or of alloys thereof all serving as basic material and which contains 0.Type: ApplicationFiled: December 5, 2001Publication date: February 10, 2005Inventors: Bernd De Boer, Bernhard Holzapfel, Gunter Risse
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Patent number: 6688677Abstract: A bodywork frame for a motor vehicle, in particular a passenger car, has two lateral load bearing columns. The columns are supported on each other at a roof side via a pressure-stable cross member and at a floor side on a longitudinal tunnel and via pressure-stable seat cross members.Type: GrantFiled: April 5, 2002Date of Patent: February 10, 2004Assignee: DaimlerChrysler AGInventors: Mario Glashagel, Bernhard Holzapfel, Elmar Freitag, Bernd Harloff
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Patent number: 6595579Abstract: A supporting pillar for a body frame of a passenger motor vehicle comprises a pillar-shaped hollow body with at least one profile shell. In the hollow body, a tubular body is arranged which essentially extends longitudinally through the hollow body and is attached to it. A lower region of the tubular body is held in a bracket attached to the profile shell. The bracket comprises two walls spaced apart from each other longitudinally. Each wall comprises a receiving aperture into which the lower region of the tubular body has been inserted, with the tubular body being attached at the receiving aperture to this bracket. The tubular body rests against, and is attached to the profile shell along a straight line, and is inclined in relation to a vertical line perpendicular to the walls of the bracket. The tubular body has an elbow between its lower region, and the region resting against the profile shell along the line.Type: GrantFiled: April 4, 2002Date of Patent: July 22, 2003Assignees: DaimlerChrysler AG, ISE Innomotive Systems Europe GmbHInventors: Elmar Freitag, Mario Glashagel, Bernhard Holzapfel, Hubertus Steffens, Alois Voss
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Publication number: 20020167197Abstract: A supporting pillar for a body frame of a passenger motor vehicle comprises a pillar-shaped hollow body with at least one profile shell. In the hollow body, a tubular body is arranged which essentially extends longitudinally through the hollow body and is attached to it. A lower region of the tubular body is held in a bracket attached to the profile shell. The bracket comprises two walls spaced apart from each other longitudinally. Each wall comprises a receiving aperture into which the lower region of the tubular body has been inserted, with the tubular body being attached at the receiving aperture to this bracket. The tubular body rests against, and is attached to the profile shell along a straight line, and is inclined in relation to a vertical line perpendicular to the walls of the bracket. The tubular body has an elbow between its lower region, and the region resting against the profile shell along the line.Type: ApplicationFiled: April 4, 2002Publication date: November 14, 2002Inventors: Elmar Freitag, Mario Glashagel, Bernhard Holzapfel, Hubertus Steffens, Alois Voss
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Publication number: 20020163225Abstract: A bodywork frame for a motor vehicle, in particular a passenger car, has two lateral load bearing columns. The columns are supported on each other at a roof side via a pressure-stable cross member and at a floor side on a longitudinal tunnel and via pressure-stable seat cross members.Type: ApplicationFiled: April 5, 2002Publication date: November 7, 2002Inventors: Mario Glashagel, Bernhard Holzapfel, Elmar Freitag, Bernd Harloff
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Patent number: 6257641Abstract: An arrangement for contacting of electronic components (for example, seat occupation detection sensors, buckle switches) in a removable vehicle seat which can be mechanically detached from its vehicle-body-side anchoring by means of a seat unlocking device. In order to unlock the seat, a plug-type connection must first be separated manually by the operator. Only then will the unlocking of the seat be released. In another embodiment, an electric plug-type connection is provided which, during the installation and removal of the seat, automatically makes or breaks contact because of the relative movement of the seat.Type: GrantFiled: October 15, 1998Date of Patent: July 10, 2001Assignee: DaimlerChrysler AGInventors: Karl-Heinz Fritz, Thomas Geisel, Bernhard Holzapfel, Sabine Schoeber
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Patent number: 6170872Abstract: A deformation element in a motor vehicle, especially for a dashboard, comprises at least one deformation body with a honeycomb cross section and encloses a cavity which is open on both sides. The wall of the cross section is closed all the way around, and is deformable to absorb energy and is subjected to an impact in the vicinity of one honeycomb side of the cross section for that purpose. The wall of the deformation body is formed from at least two partial sections connected with one another.Type: GrantFiled: March 26, 1998Date of Patent: January 9, 2001Assignee: DaimlerChrysler AGInventors: Juergen Bair, Georg Bauer, Alban Bossenmaier, Bernhard Holzapfel, Friedrich Reiter