Patents by Inventor Lutz Friedrich
Lutz Friedrich 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).
-
Patent number: 11753950Abstract: A gas turbine has a rotor blade. The rotor blade has a blade root connected to an airfoil. The blade root has a root contour with respect to a cross-sectional view. From a lower end of the blade root, the blade root contour has convex contour portions and concave contour portions. From the lower end along the blade root contour between a convex contour portion and an adjoining concave contour portion, there is a contour portion as a flank portion that is load-bearing. From the lower end along the blade root contour between a concave contour portion and an adjoining convex contour portion, there is a contour portion as a flank portion that is not load-bearing in operation. At least one of the concave contour portions has a first arc portion, a second arc portion, and a straight portion disposed between the two arc portions.Type: GrantFiled: May 18, 2020Date of Patent: September 12, 2023Assignee: MTU AERO ENGINES AGInventors: Martin Pernleitner, Dieter Freno, Klaus Wittig, Christian Eichler, Lutz Friedrich, Johannes Linhard
-
Patent number: 11725518Abstract: A method for machining a blade and a blade for a turbomachine comprising a shroud which is positioned on a tip side of the blade. The shroud has an outer surface with at least one circumferential fin arranged thereon, whereby at least one section of the outer surface beside the at least one fin is processed in at least two manufacturing steps. At least one first section of the outer surface is processed to have a first shape and at least one second section of the outer surface is processed to have a second shape.Type: GrantFiled: February 8, 2021Date of Patent: August 15, 2023Assignee: MTU Aero Engines AGInventors: Krzysztof Skura, Martin Pernleitner, Christian Eichler, Lutz Friedrich
-
Patent number: 11585225Abstract: The invention refers to a blade for a turbomachine comprising a shroud which is positioned on a tip side of the blade having an outer surface having at least one circumferential web arranged thereon, at least one pocket recessed in the outer surface and a hardfacing provided on at least one edge of the shroud wherein a pocket recessed in the outer surface is arranged adjacent to the hardfacing and a side face of the pocket joins the supporting wall with a radius corresponding at least to the length of the shorter extension of the supporting wall and at most to 1.5 times the length of the larger extension of the supporting wall.Type: GrantFiled: February 9, 2021Date of Patent: February 21, 2023Assignee: MTU Aero Engines AGInventors: Krzysztof Skura, Christian Eichler, Lutz Friedrich
-
Publication number: 20220251959Abstract: A gas turbine has a rotor blade. The rotor blade has a blade root connected to an airfoil. The blade root has a root contour with respect to a cross-sectional view. From a lower end of the blade root, the blade root contour has convex contour portions and concave contour portions. From the lower end along the blade root contour between a convex contour portion and an adjoining concave contour portion, there is a contour portion as a flank portion that is load-bearing. From the lower end along the blade root contour between a concave contour portion and an adjoining convex contour portion, there is a contour portion as a flank portion that is not load-bearing in operation. At least one of the concave contour portions has a first arc portion, a second arc portion, and a straight portion disposed between the two arc portions.Type: ApplicationFiled: May 18, 2020Publication date: August 11, 2022Inventors: Martin PERNLEITNER, Dieter FRENO, Klaus WITTIG, Christian EICHLER, Lutz FRIEDRICH, Johannes LINHARD
-
Publication number: 20210246793Abstract: The invention refers to a method for machining a blade and a blade for a turbomachine comprising a shroud which is positioned on a tip side of the blade. The shroud has an outer surface with at least one circumferential fin arranged thereon, whereby at least one section of the outer surface beside the at least one fin is processed in at least two manufacturing steps. At least one first section of the outer surface is processed to have a first shape and at least one second section of the outer surface is processed to have a second shape.Type: ApplicationFiled: February 8, 2021Publication date: August 12, 2021Applicant: MTU Aero Engines AGInventors: Krzysztof Skura, Martin Pernleitner, Christian Eichler, Lutz Friedrich
-
Publication number: 20210246794Abstract: The invention refers to a blade for a turbomachine comprising a shroud which is positioned on a tip side of the blade having an outer surface having at least one circumferential web arranged thereon, at least one pocket recessed in the outer surface and a hardfacing provided on at least one edge of the shroud wherein a pocket recessed in the outer surface is arranged adjacent to the hardfacing and a side face of the pocket joins the supporting wall with a radius corresponding at least to the length of the shorter extension of the supporting wall and at most to 1.5 times the length of the larger extension of the supporting wall.Type: ApplicationFiled: February 9, 2021Publication date: August 12, 2021Applicant: MTU Aero Engines AGInventors: Krzysztof Skura, Christian Eichler, Lutz Friedrich
-
Patent number: 10914180Abstract: A shroud segment (100) for disposition on a blade of a turbomachine is provided, in particular a gas turbine, the shroud segment having a stiffening structure raised above a shroud segment surface (15), the stiffening structure including at least three interconnected ribs (3, 5, 7), and a first end portion of the ribs (3, 5, 7) being connected to an upstream sealing tip (11) of the shroud segment (100), and a second end portion of these ribs (3, 5, 7) being connected to a downstream sealing tip (13) of the shroud segment (100). The angles (W1, W2, W3) between the direction of the axis of rotation (a) of the blade and the longitudinal orientations (21, 23, 25) of the ribs (3, 5, 7), as viewed in the direction of flow (9) through the turbomachine, are between zero degrees and eighty degrees. The present invention also relates to a blade (200) of a turbomachine.Type: GrantFiled: January 16, 2019Date of Patent: February 9, 2021Assignee: MTU Aero Engines AGInventors: Martin Pernleitner, Klaus Wittig, Lutz Friedrich
-
Publication number: 20190234219Abstract: A shroud segment (100) for disposition on a blade of a turbomachine is provided, in particular a gas turbine, the shroud segment having a stiffening structure raised above a shroud segment surface (15), the stiffening structure including at least three interconnected ribs (3, 5, 7), and a first end portion of the ribs (3, 5, 7) being connected to an upstream sealing tip (11) of the shroud segment (100), and a second end portion of these ribs (3, 5, 7) being connected to a downstream sealing tip (13) of the shroud segment (100). The angles (W1, W2, W3) between the direction of the axis of rotation (a) of the blade and the longitudinal orientations (21, 23, 25) of the ribs (3, 5, 7), as viewed in the direction of flow (9) through the turbomachine, are between zero degrees and eighty degrees. The present invention also relates to a blade (200) of a turbomachine.Type: ApplicationFiled: January 16, 2019Publication date: August 1, 2019Inventors: Martin PERNLEITNER, Klaus WITTIG, Lutz FRIEDRICH
-
Publication number: 20170224105Abstract: A motorized home storage system can be mounted to any type of ceiling for storing items off the ground. The motorized home storage system is designed to make use of unused ceiling space, allowing homeowners to store their items overhead and out of the way and create additional storage in homes. The system is designed for large and heavy items that can be easily stored due to the two tube motors. Tube motors can allow a storage platform to be lowered for easy access, loading, and unloading. Additionally, tube motors can allow the storage platform to be raised to the ceiling in order to be completely out of the way and off the ground. The system can include legs attached to the platform which can unsnap to turn the platform into a table.Type: ApplicationFiled: February 21, 2017Publication date: August 10, 2017Inventor: LUTZ FRIEDRICH KLOOTH
-
Patent number: 9572427Abstract: A motorized home storage system can be mounted to any type of ceiling for storing items off the ground. The motorized home storage system is designed to make use of unused ceiling space, allowing homeowners to store their items overhead and out of the way and create additional storage in homes. The system is designed for large and heavy items that can be easily stored due to the two tube motors. Tube motors can allow a storage platform to be lowered for easy access, loading, and unloading. Additionally, tube motors can allow the storage platform to be raised to the ceiling in order to be completely out of the way and off the ground. The system can include legs attached to the platform which can unsnap to turn the platform into a table.Type: GrantFiled: March 31, 2014Date of Patent: February 21, 2017Assignee: LFK ENGINEERING LLCInventor: Lutz Friedrich Klooth
-
Publication number: 20150272323Abstract: A motorized home storage system can be mounted to any type of ceiling for storing items off the ground. The motorized home storage system is designed to make use of unused ceiling space, allowing homeowners to store their items overhead and out of the way and create additional storage in homes. The system is designed for large and heavy items that can be easily stored due to the two tube motors. Tube motors can allow a storage platform to be lowered for easy access, loading, and unloading. Additionally, tube motors can allow the storage platform to be raised to the ceiling in order to be completely out of the way and off the ground. The system can include legs attached to the platform which can unsnap to turn the platform into a table.Type: ApplicationFiled: March 31, 2014Publication date: October 1, 2015Applicant: LFK Engineering LLCInventor: Lutz Friedrich Klooth
-
Patent number: D526008Type: GrantFiled: December 10, 2004Date of Patent: August 1, 2006Assignee: Francotyp-Postalia GmbHInventors: Lutz Friedrich, Hans-Peter Constin
-
Patent number: D527046Type: GrantFiled: December 10, 2004Date of Patent: August 22, 2006Assignee: Francotyp-Postalia GmbHInventors: Lutz Friedrich, Hans-Peter Constin
-
Patent number: D528152Type: GrantFiled: December 10, 2004Date of Patent: September 12, 2006Assignee: Francotyp-Postalia GmbHInventors: Lutz Friedrich, Hans-Peter Constin
-
Patent number: D529544Type: GrantFiled: December 10, 2004Date of Patent: October 3, 2006Assignee: Francotyp-Postlia GmbHInventors: Lutz Friedrich, Hans-Peter Constin
-
Patent number: D536369Type: GrantFiled: December 10, 2004Date of Patent: February 6, 2007Assignee: Francotyp-Postalia GmbHInventors: Lutz Friedrich, Hans-Peter Constin
-
Patent number: D563428Type: GrantFiled: March 6, 2006Date of Patent: March 4, 2008Assignee: Bundesdruckerei GmbHInventors: Kirsten Langen, Horst Kessler, Olaf Dressel, Juergen Dietrich, Hans-Peter Constin, Lutz Friedrich
-
Patent number: D563429Type: GrantFiled: March 6, 2006Date of Patent: March 4, 2008Assignee: Bundesdruckerei GmbHInventors: Kirsten Langen, Horst Kessler, Olaf Dressel, Juergen Dietrich, Hans-Peter Constin, Lutz Friedrich
-
Patent number: D591706Type: GrantFiled: February 6, 2008Date of Patent: May 5, 2009Assignee: Rohde & Schwarz SIT GmbHInventors: Hans-Peter Constin, Lutz Friedrich
-
Patent number: D398335Type: GrantFiled: April 22, 1997Date of Patent: September 15, 1998Assignee: Francotyp Postalia AG & Co.Inventors: Lutz Friedrich, Hans-Peter Constin