Patents by Inventor Gregor Kappmeyer

Gregor Kappmeyer 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: 9656354
    Abstract: During the repair of welded two-stage or multi-stage compressor or turbine drums, which after welding are machined in the weld area down to a height A, a first material coating with a height B extending on both sides from the root face is applied to the machined weld area, and a second and lesser material coating is applied by laser welding to the area of plasma pockets formed on the intact rotor disk, with the sum of the heights A and B corresponding to an original height C in the weld area prior to its final machining. Then the defective rotor disk is detached in the root face and through the middle of the first material coating, and after that a new rotor disk already validated in the new construction with the root face validated in the new construction is welded on using appropriate welding parameters, and the weld area is machined, in line with the parameters already used for the new construction, down to the original height A.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: May 23, 2017
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Elke Weiss, Gregor Kappmeyer, Florian Stappenbeck
  • Patent number: 8946585
    Abstract: A method for the manufacture of a cutting tool provided with a tool holder (1) to which a cutter (2) is separably attached, includes applying a generative production process to a tool base body (3) to create the tool holder (1) with a desired finished shape.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: February 3, 2015
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventor: Gregor Kappmeyer
  • Patent number: 8689442
    Abstract: With the fabrication of integrally bladed rotors or stators (blisks) for gas-turbine engines, where the space confined by the pressure and suction side as well as the annulus surface is shaped by cutting and machining from the solid material, starting at the periphery of a ring or disk, a stiffness-optimized pre-machining contour is cut out in a cutting process at a certain distance from the pressure and suction side along straight control surfaces at a cutting angle varying in correspondence with the blade twist and along a conical surface extending at a certain distance from the annulus surface as well as along transition surfaces between the conical and the control surfaces, and subsequently finish machined by finish milling to produce the final contour of the blade, annulus and transition surfaces. The method reduces tool wear and is cost-effective.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: April 8, 2014
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Gregor Kappmeyer, Gregor Riedel
  • Publication number: 20130326876
    Abstract: During the repair of welded two-stage or multi-stage compressor or turbine drums, which after welding are machined in the weld area down to a height A, a first material coating with a height B extending on both sides from the root face is applied to the machined weld area, and a second and lesser material coating is applied by laser welding to the area of plasma pockets formed on the intact rotor disk, with the sum of the heights A and B corresponding to an original height C in the weld area prior to its final machining. Then the defective rotor disk is detached in the root face and through the middle of the first material coating, and after that a new rotor disk already validated in the new construction with the root face validated in the new construction is welded on using appropriate welding parameters, and the weld area is machined, in line with the parameters already used for the new construction, down to the original height A.
    Type: Application
    Filed: January 4, 2012
    Publication date: December 12, 2013
    Applicant: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Elke Weiss, Gregor Kappmeyer, Florian Stappenbeck
  • Patent number: 7704021
    Abstract: With an integrally bladed rotor, material removal is performed from the annulus (5) on a wide, even machining path (8) using the front-side cutting area of an essentially cylindrical cutter head (7). The tool shank (9) is shaped and dimensioned such that it does not collide with the opposite lateral surfaces of the differently curved and twisted blades (4). This type of machining enables an essentially even, smooth annulus surface to be obtained with a reduced number of overlapping machining paths (8). The time required for machining the annulus and the tool wear are reduced. With an annulus machined in accordance with the present invention, the rotor will satisfy high requirements on aerodynamics.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: April 27, 2010
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Jan Hollmann, Gregor Kappmeyer
  • Publication number: 20090282680
    Abstract: With the fabrication of integrally bladed rotors or stators (blisks) for gas-turbine engines, where the space confined by the pressure and suction side as well as the annulus surface is shaped by cutting and machining from the solid material, starting at the periphery of a ring or disk, a stiffness-optimized pre-machining contour is cut out in a cutting process at a certain distance from the pressure and suction side along straight control surfaces at a cutting angle varying in correspondence with the blade twist and along a conical surface extending at a certain distance from the annulus surface as well as along transition surfaces between the conical and the control surfaces, and subsequently finish machined by finish milling to produce the final contour of the blade, annulus and transition surfaces. The method reduces tool wear and is cost-effective.
    Type: Application
    Filed: April 6, 2009
    Publication date: November 19, 2009
    Inventors: Gregor Kappmeyer, Gregor Riedel
  • Publication number: 20090245959
    Abstract: With an integrally bladed rotor, material removal is performed from the annulus (5) on a wide, even machining path (8) using the front-side cutting area of an essentially cylindrical cutter head (7). The tool shank (9) is shaped and dimensioned such that it does not collide with the opposite lateral surfaces of the differently curved and twisted blades (4). This type of machining enables an essentially even, smooth annulus surface to be obtained with a reduced number of overlapping machining paths (8). The time required for machining the annulus and the tool wear are reduced. With an annulus machined in accordance with the present invention, the rotor will satisfy high requirements on aerodynamics.
    Type: Application
    Filed: February 19, 2009
    Publication date: October 1, 2009
    Inventors: Jan Hollmann, Gregor Kappmeyer
  • Publication number: 20070283786
    Abstract: A method for the manufacture of a cutting tool provided with a tool holder (1) to which a cutter (2) is separably attached, includes applying a generative production process to a tool base body (3) to create the tool holder (1) with a desired finished shape.
    Type: Application
    Filed: June 11, 2007
    Publication date: December 13, 2007
    Inventor: Gregor Kappmeyer