Patents by Inventor Erwan Siewert
Erwan Siewert 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: 20240217022Abstract: The present invention relates to a method for cleaning of a surface of at least one workpiece made out of an aluminium alloy, comprising the steps of: generating an electric arc or a plasma jet by means of a torch, applying the electric arc or the plasma jet to the surface, and moving the torch and the at least one workpiece relative to one another to clean the surface by evaporating impurities of the surface using the electric arc or plasma jet, and e.g. detecting light coming from the electric arc or plasma jet by means of an optical sensor, wherein the optical sensor generates an output signal indicative of the presence of impurities of the surface evaporated by the electric arc or by the plasma jet.Type: ApplicationFiled: April 28, 2022Publication date: July 4, 2024Inventors: Erwan SIEWERT, Nakhleh A. HUSSARY, Lukas FEHRENBACH
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Publication number: 20240051058Abstract: The present invention relates to a trailing gas nozzle (1) for a welding torch, comprising an elongated body (10) comprising an internal space (11) for receiving a trailing gas (G), and an elongated discharge area (12) on a bottom side of the body (10) for discharging the trailing gas (G) onto a weld seam (S). The body (10) comprises a plurality of segments (101, 102, 103) connected to one another contact surfaces so that a curvature of the discharge area (12) is adjustable to a desired curvature.Type: ApplicationFiled: September 16, 2021Publication date: February 15, 2024Inventors: Erwan SIEWERT, Michael PFREUNTNER
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Publication number: 20230381898Abstract: The invention relates to a welding device for welding at least one workpiece, comprising: a welding torch, which is designed to create an electric arc for welding the at least one workpiece; and a nozzle apparatus, which is arranged on the welding torch and has a cooling nozzle array, which has at least one row of cooling nozzles, wherein for cooling the workpiece, the respective cooling nozzle can be supplied with an adjustable volume flow of a cooling medium.Type: ApplicationFiled: October 6, 2021Publication date: November 30, 2023Inventor: Erwan SIEWERT
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Publication number: 20230381882Abstract: An accessory holder for a torch, comprising: a body having an inner surface and an outer surface, and at least one accessory arranged on the body of the accessory holder and/or a fastening region arranged on the outer surface of the body of the accessory holder, which fastening region is configured to releasably fasten an accessory to the accessory holder. The body of the accessory holder is releasably connected to the torch, wherein the inner surface of the body of the accessory holder comprises at least one alignment feature that is configured to be mated with a corresponding feature arranged on an outer surface of the torch in a form fitting manner so that the accessory holder resides in a fixed spatial orientation with respect to the torch when the accessory holder is releasably connected to the torch.Type: ApplicationFiled: August 9, 2021Publication date: November 30, 2023Inventors: Erwan SIEWERT, Nakhleh A. HUSSARY
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Publication number: 20220387949Abstract: A gas mixer device for mixing a plurality of gases to generate a gas mixture comprising a desired composition, wherein the gas mixer device comprises: a chassis supporting a mixing chamber for receiving the respective gas and storing said gas mixture, and a plurality of mass flow controllers configured to measure and control a mass flow of the respective gas. According to the present invention, the respective mass flow controller is configured to be releasably connected to the chassis. Furthermore, the present invention relates to a method for generating a gas mixture comprising a desired composition.Type: ApplicationFiled: November 5, 2020Publication date: December 8, 2022Inventors: Erwan SIEWERT, Nakhleh A. HUSSARY
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Publication number: 20220386444Abstract: A consumables holder assembly for a plasma arc torch having a torch head, the consumables holder assembly comprising a main body, a shielding cup which engages to the main body, a connection means which engages the main body to the torch head, wherein the consumable components including an electrode, a nozzle, a plasma gas distributor, a shielding gas distributor which are all positioned inside the shielding cup, wherein the consumable holder assembly can be detached from the torch head together with the consumable components and the shielding cup as one unit, wherein the nozzle comprises two focus gas passageways which lead a focus gas out of the nozzle through at least two focus holes, wherein external visual features are provided on both connection means and the torch head which are aligned to each other showing the location of the focus holes.Type: ApplicationFiled: November 5, 2020Publication date: December 1, 2022Inventors: Erwan SIEWERT, Nakhleh A. HUSSARY, Richard Andreas WAGNER
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Publication number: 20220386445Abstract: A consumables holder assembly for a plasma arc torch having a torch head, the consumables holder assembly comprising a main body, a shielding cup which engages to the main body, a connection means which engages the main body to the torch head and consumable components including an electrode, a nozzle, a plasma gas distributor, a shielding gas distributor which are all positioned inside the shielding cup, wherein that the consumable holder assembly can be detached from the torch head together with the consumable components and the shielding cup as one unit, wherein the connection means comprises a mechanical attachment mechanism which is engageable with the torch head.Type: ApplicationFiled: November 5, 2020Publication date: December 1, 2022Inventors: Erwan SIEWERT, Nakhleh A. HUSSARY, Richard Andreas WAGNER
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Publication number: 20220274200Abstract: The invention relates to a torch for plasma processing. The sealing and electrically conductive connection between different components of the torch is realized by using at least one elastically deformable and electrically conductive sealing member.Type: ApplicationFiled: August 20, 2020Publication date: September 1, 2022Inventors: Erwan SIEWERT, Nakhleh A. HUSSARY, Richard Andreas WAGNER
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Patent number: 11084116Abstract: The invention relates to an ozone supply unit (26) for a flame burner apparatus and/or an oxygen cutting apparatus (10), comprising an oxygen inlet (28) to be supplied with oxygen (18), an ozone generator (32) coupled to the oxygen inlet (28) and configured to convert at least a part of the oxygen (18) supplied to the oxygen inlet (28) into ozone (18a), and an outlet (30) coupled to the ozone generator (32), wherein the outlet (30) provides at least a part of the oxygen (18) supplied to the oxygen inlet (28) and at least a part of the ozone (18a) converted by the ozone generator (32). The ozone supply unit (26) is configured to be integrated into a flame burner apparatus and/or an oxygen cutting apparatus (30). The invention further relates to a method for supplying ozone to a flame burner apparatus and/or an oxygen cutting apparatus (30).Type: GrantFiled: February 19, 2019Date of Patent: August 10, 2021Assignee: LINDE AKTIENGESELLSCHAFTInventors: Jacob Fieret, Erwan Siewert, Ernst Miklos
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Publication number: 20210162552Abstract: The invention relates to a welding process for producing a component (10) by depositing multiple layers (100) of a metal material in layers, said layers lying one on top of the other. In said process, the base (10a) of the component (10) is placed in a liquid coolant (6) such that the coolant contacts the base (6), and a surface (10b) of the base (6) lies above the coolant level (3). A first layer (100) of the material is deposited onto the surface (10b) by welding the material to the surface (10b), and each subsequent layer (100) is deposited onto a temporary component surface (10bb) formed by the previously deposited layer (100) by welding the material to the temporary component surface (10bb), wherein the heat resulting from welding the material is absorbed by the coolant (6). The invention additionally relates to a device (1) for carrying out the method.Type: ApplicationFiled: March 25, 2019Publication date: June 3, 2021Inventor: Erwan Siewert
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Patent number: 10668553Abstract: A method and device for gas metal arc welding, wherein a current-carrying wire electrode is melted by an arc, and wherein gas metal arc welding is performed using a filler metal, which contains at least one constituent that releases deleterious emissions through evaporation, wherein a composition that does not contain this constituent is selected for the wire electrode, and a dead weld metal containing this constituent is fed to the arc and/or a molten bath without a current.Type: GrantFiled: September 9, 2014Date of Patent: June 2, 2020Assignee: LINDE AKTIENGESELLSCHAFTInventor: Erwan Siewert
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Patent number: 10583512Abstract: A method and a welding torch for gas tungsten arc welding is provided for, wherein an electric arc burns between a non-consumable electrode and a workpiece. The interior of the electrode has a cavity through which an electrically conducting filler is fed in the direction of the workpiece, the filler being energized.Type: GrantFiled: March 12, 2015Date of Patent: March 10, 2020Assignee: LINDE AKTIENGESELLSCHAFTInventor: Erwan Siewert
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Publication number: 20190299314Abstract: A method of cleaning a workpiece after a welding process is provided, wherein the cleaning is conducted by removing oxide from the surface of the workpiece which is formed on the weld and the heat-affected zone of the workpiece during the previous welding process, wherein an electric arc is generated between the workpiece and a non-consumable electrode to remove the oxide on the workpiece, wherein a power source is provided to electrically communicate the workpiece and the non-consumable electrode and wherein the non-consumable electrode is anodic connected and the workpiece is cathodic connected.Type: ApplicationFiled: November 9, 2017Publication date: October 3, 2019Applicant: LINDE AKTIENGESELLSCHAFTInventors: Ernst MIKLOS, Erwan SIEWERT, Fatih SAVGU
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Publication number: 20190255645Abstract: The invention relates to an ozone supply unit (26) for a flame burner apparatus and/or an oxygen cutting apparatus (10), comprising an oxygen inlet (28) to be supplied with oxygen (18), an ozone generator (32) coupled to the oxygen inlet (28) and configured to convert at least a part of the oxygen (18) supplied to the oxygen inlet (28) into ozone (18a), and an outlet (30) coupled to the ozone generator (32), wherein the outlet (30) provides at least a part of the oxygen (18) supplied to the oxygen inlet (28) and at least a part of the ozone (18a) converted by the ozone generator (32). The ozone supply unit (26) is configured to be integrated into a flame burner apparatus and/or an oxygen cutting apparatus (30). The invention further relates to a method for supplying ozone to a flame burner apparatus and/or an oxygen cutting apparatus (30).Type: ApplicationFiled: February 19, 2019Publication date: August 22, 2019Applicant: LINDE AKTIENGESELLSCHAFTInventors: Jacob FIERET, Erwan SIEWERT, Ernst MIKLOS
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Publication number: 20170008116Abstract: The invention relates to a method and a welding torch for gas tungsten arc welding, wherein an electric arc burns between a non-consumable electrode (110) and a workpiece (151). The interior of the electrode (110) has a cavity (200) through which an electrically conducting filler (210) is fed in the direction (230a) of the workpiece (151), said filler (210) being energized.Type: ApplicationFiled: March 12, 2015Publication date: January 12, 2017Inventor: Erwan Siewert
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Publication number: 20150108094Abstract: A method and device for gas metal arc welding, wherein a wire electrode is melted by an arc, wherein the arc burns between the wire electrode and a work piece, wherein an inert gas is supplied in the form of an inert gas flow, wherein emissions are released in the form of emission particles during gas metal arc welding, and wherein at least one flow gradient is generated in the direction of the work piece for agglomerating the emission particles.Type: ApplicationFiled: September 17, 2014Publication date: April 23, 2015Inventors: Erwan Siewert, Rolf Heninger
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Publication number: 20150090698Abstract: A method and device for gas metal arc welding, wherein a current-carrying wire electrode is melted by an arc, and wherein gas metal arc welding is performed using a filler metal, which contains at least one constituent that releases deleterious emissions through evaporation, wherein a composition that does not contain this constituent is selected for the wire electrode, and a dead weld metal containing this constituent is fed to the arc and/or a molten bath without a current.Type: ApplicationFiled: September 9, 2014Publication date: April 2, 2015Inventor: Erwan Siewert
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Publication number: 20150069024Abstract: A method for gas metal arc welding, as well as to a device for gas metal arc welding and the use of an additional gas during gas metal arc welding, wherein a wire electrode is melted by an arc, wherein the arc burns between the wire electrode and a work piece, and an inert gas is supplied, and wherein an additional gas in the form of at least one additional gas flow directed toward the tip of the wire electrode is supplied in addition to the inert gas.Type: ApplicationFiled: August 14, 2014Publication date: March 12, 2015Inventors: Erwan Siewert, Laurentius Dreßel
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Publication number: 20140353286Abstract: A method for gas metal arc welding is disclosed, wherein a welding current is passed through a wire electrode and the a wire electrode is melted by a welding arc, wherein at least one parameter that influences Joulean heating of the wire electrode is adjusted.Type: ApplicationFiled: May 14, 2014Publication date: December 4, 2014Inventor: Erwan Siewert
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Publication number: 20100133241Abstract: In connection with plasma tap hole welding, in which a plasma jet (7) directed towards a workpiece (8) to be welded is generated by means of a welding current applied onto an electrode (2) and a plasma gas, the plasma jet at least partly penetrating through the workpiece (9), wherein at least one electrical conductor (10, 50, 60, 61) is arranged at the exit side (8?) of the plasma jet (7), a penetration current (I2?) being measured via the electrical conductor (10, 50, 60, 61), it is suggested that the penetration current (I2) is actively modified during the welding process.Type: ApplicationFiled: November 30, 2009Publication date: June 3, 2010Inventors: Gerald Wilhelm, Erwan Siewert