Patents by Inventor Joerg Hoeschele
Joerg Hoeschele 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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Publication number: 20100288399Abstract: A method for remelting metallic surfaces of components using the effect of a stable high pressure plasma jet, includes melting the surface in localized areas, the surface having a structure refinement after solidification. The plasma jet action is generated by the microwave impact on a carrier gas, the pressure of the high pressure plasma jet being above the atmospheric pressure. In addition, a plasma torch for generating a directed high pressure plasma jet includes a gas supply, a device for generating a plasma, and an outlet nozzle for a plasma jet. The device for generating the plasma includes a magnetron and a resonator in which the supplied pressurized carrier gas is transferred into a plasma under the effect of microwaves, causing the plasma to exit through the outlet nozzle at a pressure above 0.1 MPa.Type: ApplicationFiled: May 24, 2010Publication date: November 18, 2010Applicant: MTU Aero Engines GmbHInventors: Joerg Hoeschele, Dirk Kiesel, Juergen Steinwandel
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Patent number: 7688441Abstract: An arrangement for measuring characteristic properties of a plasma beam in a thermal spray process, including a device for introducing spray materials into the plasma, a one-dimensional or two-dimensional array including first optical waveguides for receiving the light radiation emitted by the plasma, and other optical waveguides for distributing the light radiation emitted by the plasma. A device is provided for splitting the light guided in the first optical waveguides into the other optical wave guides, one optical waveguide being connected to the opening diaphragm of a particle flow arrangement, and the other optical waveguide being connected to the opening diaphragm of a spectrometer. A device is also provided for determining the current state of the spray process.Type: GrantFiled: March 30, 2006Date of Patent: March 30, 2010Assignee: MTU Aero Engines GmbHInventors: Manuel Hertter, Joerg Hoeschele, Stefan Schneiderbanger, Juergen Steinwandel
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Publication number: 20090051915Abstract: An arrangement for measuring characteristic properties of a plasma beam in a thermal spray process, including a device for introducing spray materials into the plasma, a one-dimensional or two-dimensional array including first optical waveguides for receiving the light radiation emitted by the plasma, and other optical waveguides for distributing the light radiation emitted by the plasma. A device is provided for splitting the light guided in the first optical waveguides into the other optical wave guides, one optical waveguide being connected to the opening diaphragm of a particle flow arrangement, and the other optical waveguide being connected to the opening diaphragm of a spectrometer. A device is also provided for determining the current state of the spray process.Type: ApplicationFiled: March 30, 2006Publication date: February 26, 2009Applicant: MTU Aero EnginesGmbHInventors: Manuel Hertter, Joerg Hoeschele, Stefan Schneiderbanger, Juergen Steinwandel
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Publication number: 20080305276Abstract: A method for applying hot gas anticorrosion layers to high-temperature-resistant alloys, either nickel-based or cobalt-based alloys, in the form of a gradient layer consisting of one or more elements of the platinum group in combination with aluminum. The components are introduced into a directional high-temperature, high-enthalpy, free jet of solid, liquid or gaseous precursors in mixing ratios such that defined concentration gradients can be established in the layer.Type: ApplicationFiled: May 20, 2005Publication date: December 11, 2008Applicant: MTU AERO ENGINES GMBHInventors: Erwin Bayer, Joerg Hoeschele, Albin Platz, Stefan Schneiderbanger, Juergen Steinwandel
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Patent number: 7217903Abstract: A method is provided for purifying gases, particularly gases contaminated by environmentally harmful substances, by way of plasma discharge. The gas to be purified is guided through a thermal plasma, which is generated by electrodeless ignition of a process gas, so that, by way of the thermal plasma, the harmful substances contained in the gas to be purified are converted to environmentally neutral, fully oxidized substances.Type: GrantFiled: November 29, 2002Date of Patent: May 15, 2007Assignee: MTU Aero Engines GmbHInventors: Erwin Bayer, Joerg Hoeschele, Juergen Steinwandel
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Publication number: 20070000601Abstract: Process and device for determining the quality of a weld seam or a thermal spray coating. In application processes such as welding the actual number of the process and material parameters determine a large range of resulting characteristics of the applied material. The task of the present invention is comprised of providing a process and a device for determining the quality of specific layer characteristics, in particular their adhesion or strength of joining to the base material. This task is solved thereby, that as the quality characteristic there is employed the degree of mixing of the applied material with the base material.Type: ApplicationFiled: July 1, 2005Publication date: January 4, 2007Inventors: Joerg Hoeschele, Alexander Ohnesorge, Juergen Steinwandel
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Patent number: 6982395Abstract: The invention relates to a method and an apparatus for plasma welding. A free microwave-induced plasma jet is generated by the following steps. Microwaves are generated in a high-frequency microwave source. The microwaves are guided in a wave guide. A process gas is introduced at a pressure of p?1 bar into a microwave-transparent tube, which comprises a gas inlet opening and a gas outlet opening, the process gas being introduced through the gas inlet opening into the microwave-transparent tube in such a way that it has a tangential flow component. A plasma is generated in the microwave-transparent tube by electrodeless ignition of the process gas. The plasma jet is produced by the introduction of the plasma into a working space through a metallic expansion nozzle arranged at the gas outlet opening of the tube.Type: GrantFiled: March 6, 2002Date of Patent: January 3, 2006Assignee: MTU Aero Engines GmbHInventors: Erwin Bayer, Philip Betz, Joerg Hoeschele, Friedrich Oeffinger, Juergen Steinwandel
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Publication number: 20050263219Abstract: A method for remelting metallic surfaces of components using the effect of a stable high pressure plasma jet, includes melting the surface in localized areas, the surface having a structure refinement after solidification. The plasma jet action is generated by the microwave impact on a carrier gas, the pressure of the high pressure plasma jet being above the atmospheric pressure. In addition, a plasma torch for generating a directed high pressure plasma jet includes a gas supply, a device for generating a plasma, and an outlet nozzle for a plasma jet. The device for generating the plasma includes a magnetron and a resonator in which the supplied pressurized carrier gas is transferred into a plasma under the effect of microwaves, causing the plasma to exit through the outlet nozzle at a pressure above 0.1 MPa.Type: ApplicationFiled: May 31, 2005Publication date: December 1, 2005Applicant: DaimlerChrysler AGInventors: Joerg Hoeschele, Dirk Kiesel, Juergen Steinwandel
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Patent number: 6940036Abstract: In a process for laser-plasma hybrid welding, to weld work pieces, a laser beam and a plasma jet are brought together in the process region close to the work piece. A free microwave-induced plasma jet is generated by the following process. Microwaves are generated in a high-frequency microwave source, and the microwaves are guided in a hollow waveguide. A process gas is introduced into a microwave-transparent tube, which includes a gas inlet opening and a gas outlet opening, at a pressure p?1 bar. The process gas is introduced into the microwave-transparent tube through the gas inlet opening in such a manner that it has a tangential flow component. A plasma is generated in the microwave-transparent tube by electrode-free ignition of the process gas, and a plasma jet is generated by introduction of the plasma into the working space through a metallic nozzle arranged at the gas outlet opening of the tube.Type: GrantFiled: April 25, 2002Date of Patent: September 6, 2005Assignees: MTU Aero Engines GmbH, DaimlerChrysler AGInventors: Erwin Bayer, Joerg Hoeschele, Juergen Steinwandel, Rainer Willneff
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Publication number: 20050139593Abstract: A method is provided for purifying gases, particularly gases contaminated by environmentally harmful substances, by way of plasma discharge. The gas to be purified is guided through a thermal plasma, which is generated by electrodeless ignition of a process gas, so that, by way of the thermal plasma, the harmful substances contained in the gas to be purified are converted to environmentally neutral, fully oxidized substances.Type: ApplicationFiled: November 29, 2002Publication date: June 30, 2005Applicants: MTU AERO ENGINES GMBH, DAIMLERCHRYSLER AGInventors: Erwin Bayer, Joerg Hoeschele, Juergen Steinwandel
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Publication number: 20050016970Abstract: The invention relates to a process for laser-plasma hybrid welding, in which, to weld work pieces, a laser beam (10) and a plasma jet (11) are brought together in the process region close to the work piece.Type: ApplicationFiled: April 25, 2002Publication date: January 27, 2005Inventors: Erwin Bayer, Joerg Hoeschele, Juergen Steinwandel, Rainer Willneff
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Patent number: 6797939Abstract: A method for measuring characteristic properties of a plasma beam in a thermal spraying process, wherein the spraying materials are fed into the plasma (1) and the luminous radiation emitted by the plasma (1) is reproduced on optical fibers (2). The luminous radiation is reproduced on the one end (2a) of the optical fibers (2) arranged in a one-dimensional or two-dimensional array (6). Spectral analysis of the luminous radiation transmitted in the optical fiber (2) is accomplished with a spectrometer (3) arranged at the other end (2b) of an optical fiber (2). The frequency spectrums are analyzed in a processor (5) to determine the contemporaneous condition of the spraying process.Type: GrantFiled: August 16, 2002Date of Patent: September 28, 2004Assignees: MTU Aero Engines GmbH, DaimlerChrysler AGInventors: Erwin Bayer, Jörg Höschele, Stefan Schneiderbanger, Jürgen Steinwandel
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Publication number: 20040149700Abstract: The invention relates to a plasma welding process by means of a free microwave-induced plasma jet, which is generated by means of the following process steps:Type: ApplicationFiled: February 13, 2004Publication date: August 5, 2004Inventors: Erwin Bayer, Philip Betz, Joerg Hoeschele, Friedrich Oeffinger, Juergen Steinwandel
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Publication number: 20030035902Abstract: In a process for coating silicon carbide fibers with a titanium-based alloy by plasma spraying, the titanium-based alloy is sprayed onto the silicon carbide fibers by way of an electrode-free high-pressure plasma. The high-pressure plasma is generated in a microwave- or radiowave-transparent working tube with a gas inlet opening and a gas outlet opening by ignition of a process gas which has been introduced into the working tube at a pressure p≧1 bar. The plasma is maintained by absorption of microwaves or radiowaves and is passed into the working space as a plasma jet through a nozzle arranged at the gas outlet opening of the working tube.Type: ApplicationFiled: August 16, 2002Publication date: February 20, 2003Inventors: Erwin Bayer, Joerg Hoeschele, Bertram Kopperger, Juergen Steinwandel
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Patent number: 6180189Abstract: The invention relates to a method for aluminum nitride coating of cylinder contact surfaces (ZL) of a crankcase (KG) made of an aluminum basic alloy where the aluminum nitride coating is performed by surface nitriding of the aluminum basic alloy, and the activated nitrogen is generated by a high-pressure plasma process.Type: GrantFiled: April 24, 1998Date of Patent: January 30, 2001Assignee: DaimlerChrysler AGInventors: Juergen Steinwandel, Joerg Hoeschele, Theodor Staneff, Axel Heuberger
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Patent number: 4942057Abstract: Amorphous layers are made by decomposing one or several gaseous compounds which include an element or elements to be deposited. These are group 3 and 5 or group 4 elements but amorphous layers of other metals can also be made. The compound is added in a small concentration to a hot gas, preferably hydrogen, helium or argon and a diffusor accelerates the mixture while molecular clusters of the element or elements are formed and impinge upon a target for depositing thereon.Type: GrantFiled: August 14, 1987Date of Patent: July 17, 1990Assignee: Dornier System GmbHInventors: Juergen Steinwandel, Manfred Hauser, Joerg Hoeschele