Patents by Inventor Ulrich Knott
Ulrich Knott 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: 9114480Abstract: The present invention relates to methods for joining a rotationally asymmetrical part, preferably a turbine blade, which is made of a monocrystalline material, to a part, preferably a rotor core, which is made of polycrystalline material, having the method steps of: —joining the rotationally asymmetrical part to an adapter piece made of polycrystalline material by means of rotational friction welding, and —joining the adapter piece to the part made of polycrystalline material. The present invention also relates to a turbine blisk having a rotor core made of polycrystalline material and turbine blades made of monocrystalline material.Type: GrantFiled: August 6, 2009Date of Patent: August 25, 2015Assignee: MTU AERO ENGINES GMBHInventors: Ulrich Knott, Erwin Bayer, Thomas Uihlein
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Patent number: 8393528Abstract: A method for hardfacing a metal component surface (14, 16), especially a shroud surface of a turbine blade made of a TiAl alloy, with at least one metal material (18, 20), in particular a Co—Cr alloy. The hardfacing coating is produced separately from the component surface and is then joined to the component surface in a high-temperature soldering process. A turbine blade including such a hardfacing coating, primarily in a shroud region (2).Type: GrantFiled: July 8, 2010Date of Patent: March 12, 2013Assignee: MTU Aero Engines GmbHInventors: Karl-Hermann Richter, Ulrich Knott, Piotr Kowalczyk
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Patent number: 8375582Abstract: A method and apparatus for the fabrication and/or repair of an integrally bladed rotor, specifically of an integrally bladed gas turbine rotor, is disclosed. At least one rotor blade is joined to a main rotor body for fabrication and/or repair. The joining is carried out by diffusion welding.Type: GrantFiled: February 4, 2006Date of Patent: February 19, 2013Assignee: MTU Aero Engines GmbHInventors: Erwin Bayer, Ulrich Knott, Karl-Hermann Richter
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Publication number: 20120125980Abstract: A method for hardfacing a metal component surface (14, 16), especially a shroud surface of a turbine blade made of a TiAl alloy, with at least one metal material (18, 20), in particular a Co—Cr alloy. The hardfacing coating is produced separately from the component surface and is then joined to the component surface in a high-temperature soldering process. A turbine blade including such a hardfacing coating, primarily in a shroud region (2).Type: ApplicationFiled: July 8, 2010Publication date: May 24, 2012Applicant: MTU Aero Engines GmbHInventors: Karl-Hermann Richter, Ulrich Knott, Piotr Kowalczyk
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Publication number: 20110129353Abstract: The present invention relates to methods for joining a rotationally asymmetrical part, preferably a turbine blade, which is made of a monocrystalline material, to a part, preferably a rotor core, which is made of polycrystalline material, having the method steps of:—joining the rotationally asymmetrical part to an adapter piece made of polycrystalline material by means of rotational friction welding, and—joining the adapter piece to the part made of polycrystalline material. The present invention also relates to a turbine blisk having a rotor core made of polycrystalline material and turbine blades made of monocrystalline material.Type: ApplicationFiled: August 6, 2009Publication date: June 2, 2011Applicant: MTU AERO ENGINES GMBHInventors: Ulrich Knott, Erwin Bayer, Thomas Uihlein
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Publication number: 20090200361Abstract: A method for joining components using a brazing technique, namely relatively thin-walled components, in particular sheet-metal panels, which are not inherently stable and thus are susceptible to deformation, comprising at least the following steps: a) preparing at least two planar and relatively thin-walled components to be joined together, and a brazing foil; b) placing the brazing foil between the components to be joined together; c) fixing in position the components to be joined together by tack welding in such a way that a tack welding of the components, between which the brazing foil is placed, is carried out at at least one position that is spaced apart from an edge of the components; d) joining the fixed-in-position components by brazing.Type: ApplicationFiled: September 5, 2007Publication date: August 13, 2009Applicant: MTU Aero Engines GmbHInventors: Ulrich Knott, Walter Gieg, Anton Reichart
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Publication number: 20080216316Abstract: A method for producing hollow blade blades, in particular for gas turbines such as aircraft jet engines is provided. At least three elements (20, 21, 22) are located one on top of the other in a sandwich structure, are joined together at least in sections by diffusion welding and are then superplastically formed by expansion in such a way that a first element (20) forms a first external wall of the hollow blade to be produced, a second element (22) forms a second external wall of the hollow blade to be produced and a third element (21) forms a central element running between the two external walls of the hollow blade to be produced. At least one nick-minimizing structure is introduced into the first element (20) and the second element (22), which form the two external walls of the hollow blade to be produced, before said elements are arranged together with the third element (21) in the sandwich structure.Type: ApplicationFiled: December 21, 2004Publication date: September 11, 2008Inventors: Ulrich Knott, Wolfgang Krueger
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Publication number: 20080148566Abstract: A method and apparatus for the fabrication and/or repair of an integrally bladed rotor, specifically of an integrally bladed gas turbine rotor, is disclosed. At least one rotor blade is joined to a main rotor body for fabrication and/or repair. The joining is carried out by diffusion welding.Type: ApplicationFiled: February 4, 2006Publication date: June 26, 2008Applicant: MTU Aero Engines GmbHInventors: Erwin Bayer, Ulrich Knott, Karl-Hermann Richter
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Publication number: 20070215671Abstract: A manufacturing plant, in particular, a rotational friction welding plant for the joining of two components, with two part systems for mutual alignment is disclosed. According to the invention, at least one of both part systems for mutual alignment is provided with an adjustment device, comprising two interleaved frames, whereby two groups, each with at least three adjustment devices, are arranged between the two frames of the adjustment device at an axial separation from each other.Type: ApplicationFiled: March 11, 2005Publication date: September 20, 2007Applicant: MTU AERO ENGINES GMBHInventors: Ulrich Knott, Erwin Bayer, Martin Bussmann
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Patent number: 6431830Abstract: A worked nozzle ring for a gas turbine, in particular an aircraft engine, having at least one shroud and at least one blade sheet arranged thereon, whereby, in order to create a worked nozzle ring that is easy to manufacture, the blade sheet comprises, at the frontal side, at least one two-dimensionally profiled connecting space region that is placed in a profiled opening formed in the shroud by beam cutting and is connected therewith.Type: GrantFiled: August 21, 2000Date of Patent: August 13, 2002Assignee: MTU Motoren-und Turbinen München GmbHInventors: Karl-Hermann Richter, Josef Reischl, Hans Juergen Schmuhl, Klaus Breitschwerdt, Ulrich Knott, Siegfried Boettcher, Karlheinz Manier, Werner Humhauser
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Patent number: 6119339Abstract: A worked nozzle ring for a gas turbine, in particular an aircraft engine, having at least one shroud and at least one blade sheet arranged thereon, whereby in order to create a worked nozzle ring that is easy to manufacture, the blade sheet comprises, at the frontal side, at least one two-dimensionally profiled connecting space region that is placed in a profiled opening formed in the shroud by means of beam cutting and is connected therewith.Type: GrantFiled: March 29, 1999Date of Patent: September 19, 2000Assignee: MTU Motoren-und Turbinen-Union Munchen GmbHInventors: Karl-Hermann Richter, Josef Reischl, Hans Juergen Schmuhl, Klaus Breitschwerdt, Ulrich Knott, Siegfried Boettcher, Karlheinz Manier, Werner Humhauser
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Patent number: 5913555Abstract: In a method of repairing worn blade tips of compressor or turbine blades, the worn blade tip (4) is first removed from the remaining blade portion (2) at a standardized height (h). The actual geometry of the end of the remaining blade portion (2) at the height (h) is measured, for example by optical digital image processing means. A repair part (4') is cut from a plate or sheet of repair material having a thickness (d) essentially corresponding to the difference between the nominal finished height (H) of the repaired turbine blade (1) and the standardized height (h) of the remaining blade portion (2) undergoing repair. The repair part (4') is cut to have a contour corresponding to the measured actual geometry of the end of the remaining blade portion (2) at the standardized cut-off height (h), for example using a laser cutting process CNC-controlled by the acquired data representing the actual blade geometry.Type: GrantFiled: October 15, 1997Date of Patent: June 22, 1999Assignee: MTU Motoren- und Turbinen-Union Muenchen GmbHInventors: Karl-Hermann Richter, Ulrich Knott
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Patent number: 5876183Abstract: A blade for a rotor, especially a turborotor, is made of two hollow blade foot sections having matching seam surfaces to form a hollow blade with a thickened foot that is butt-welded with its blade foot sole (7) to an integral welding stub of a rotor hub or disk. The two hollow blade foot sections are soldered to each other along a radially outer seam section (5) between the seam surfaces and welded to each other along a radially inner seam section (6) between the seam surface. The radially inner seam section extends from said blade foot sole. The welded seam normally ends in the thickened blade foot section (6) and is thus shorter than the soldered seam section (5).Type: GrantFiled: March 19, 1998Date of Patent: March 2, 1999Assignee: MTU Motoren- und Turbinen-Union Muenchen GmbHInventors: Roberto Furlan, Ulrich Knott, Horst Friedrich
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Patent number: 5797182Abstract: A blade for a rotor, especially a turborotor, is made of two hollow blade foot sections having matching seam surfaces to form a hollow blade with a thickened foot that is butt-welded with its blade foot sole (7) to an integral welding stub of a rotor hub or disk. The two hollow blade foot sections are soldered to each other along a radially outer seam section (5) between the seam surfaces and welded to each other along a radially inner seam section (6) between the seam surface. The radially inner seam section extends from said blade foot sole. The welded seam normally ends in the thickened blade foot section (6) and is thus shorter than the soldered seam section (5).Type: GrantFiled: November 7, 1996Date of Patent: August 25, 1998Assignee: MTU Motoren- und Turbinen-Union Muenchen GmbHInventors: Roberto Furlan, Ulrich Knott, Horst Friedrich