Patents by Inventor Ulrike Hain

Ulrike Hain 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).

  • Ring structure of metal construction having a run-in lining
    Patent number: 8061965
    Abstract: A ring structure with a metal design for a moving blade of axially flowed through compressor and turbine stages, particularly in gas turbine engines is provided. The ring structure includes a circular ring-shaped outer wall, a circular ring-shaped inner wall, which is located at a short radial distance from the moving blade tips, and includes a joining structure provided in the form of hollow chamber structure between the outer wall and the inner wall. The outer wall is provided in the form of a closed, mechanically stable housing wall of the compressor or turbine stage, and the joining structure provided in the form of hollow chamber structure is joined in a fixed manner to the outer wall and to the inner wall, for example, by soldering, diffusion welding or other joining techniques. The inner wall is provided in the form of a closed, mechanically stable structure, which serves as a run-in lining for the moving blade tips and which is made of a metal woven fabric and/or of a metal felt.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: November 22, 2011
    Assignee: MTU Aero Engines GmbH
    Inventors: Manfred A. Daeubler, Horst Mueller-Wittek, legal representative, Renate Mendritzki, legal representative, Ulrike Hain, Werner Humhauser
  • Ring structure with a metal design having a run-in lining
    Publication number: 20090263239
    Abstract: A ring structure with a metal design for a moving blade of axially flowed through compressor and turbine stages, particularly in gas turbine engines is provided. The ring structure includes a circular ring-shaped outer wall, a circular ring-shaped inner wall, which is located at a short radial distance from the moving blade tips, and includes a joining structure provided in the form of hollow chamber structure between the outer wall and the inner wall. The outer wall is provided in the form of a closed, mechanically stable housing wall of the compressor or turbine stage, and the joining structure provided in the form of hollow chamber structure is joined in a fixed manner to the outer wall and to the inner wall, for example, by soldering, diffusion welding or other joining techniques. The inner wall is provided in the form of a closed, mechanically stable structure, which serves as a run-in lining for the moving blade tips and which is made of a metal woven fabric and/or of a metal felt.
    Type: Application
    Filed: February 28, 2005
    Publication date: October 22, 2009
    Applicant: MTU Aero Engines GmbH
    Inventors: Manfred A. Daeubler, Horst Mueller-Wittek, Renate Mendritzki, Ulrike Hain, Werner Humhauser