Patents by Inventor Helmut A. Geidel

Helmut A. Geidel 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).

  • Turbofan engine having a contrarotating low-pressure compressor
    Patent number: 5274999
    Abstract: A turbofan engine includes two oppositely rotating fan rotors which are arranged upstream of the core engine, and has a booster with two contra-rotating coaxial rotors. The radially exterior booster rotor is arranged between the rearward fan rotor and the low-pressure turbine in a torque-transmitting manner. The gearless construction permits an almost uniform loading of the low-pressure shafts.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: January 4, 1994
    Assignee: MTU Motoren- Und Turbinen-Union Munchen GmbH
    Inventors: Alois Rohra, Helmut A. Geidel
  • Propfan turbine engine
    Patent number: 4887424
    Abstract: A propfan turbine engine having a reduction gearing for the propfan rotors is provided with a lubricating system of its own for the reduction gearing, the system being arranged axially between the gas turbine and the reduction gearing and formed as an annular assembly surrounding a drive shaft from a gas turbine to the reduction gearing. Cooling air is supplied to the lubricating system as a location which will not interfere with the supply of air to the compressor of the gas turbine.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: December 19, 1989
    Assignee: Motoren- und Turbinen-Union Munchen GmbH
    Inventors: Helmut Geidel, Alois Rohra