Patents by Inventor Derek Waszczuk

Derek Waszczuk 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).

  • Method of manufacturing and refinishing integrally bladed rotors
    Patent number: 8286348
    Abstract: A method of forming integrally bladed rotors for gas turbines is described. The method includes drilling in a workpiece material recesses defining flow passages and rotor blades, performing a coarse milling step to refine surfaces of the rotor blades, and filling the recesses between the rotor blades with a damping material, thus encasing the rotor blades in the damping material. The method further includes performing a finishing milling step to remove the damping material and the workpiece material on surfaces of the rotor blades, while maximizing a damping effect of the damping material on the rotor blades. To maximize the damping effect, the finishing milling tool moves along a path that preferentially mills one surface of a blade while the other surface is in contact with the damping material.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: October 16, 2012
    Assignee: MTU Aero Engines GmbH
    Inventors: Marjan Rozic, Dariusz Nowak, Derek Waszczuk
  • METHOD OF MANUFACTURING AND REFINISHING INTEGRALLY BLADED ROTORS
    Publication number: 20100074704
    Abstract: A method of forming integrally bladed rotors for gas turbines is described. The method includes drilling in a workpiece material recesses defining flow passages and rotor blades, performing a coarse milling step to refine surfaces of the rotor blades, and filling the recesses between the rotor blades with a damping material, thus encasing the rotor blades in the damping material. The method further includes performing a finishing milling step to remove the damping material and the workpiece material on surfaces of the rotor blades, while maximizing a damping effect of the damping material on the rotor blades. To maximize the damping effect, the finishing milling tool moves along a path that preferentially mills one surface of a blade while the other surface is in contact with the damping material.
    Type: Application
    Filed: September 22, 2008
    Publication date: March 25, 2010
    Applicant: MTU AERO ENGINES GmbH
    Inventors: Marjan Rozic, Dariusz Nowak, Derek Waszczuk