Patents by Inventor Volker Lunneman

Volker Lunneman 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).

  • Arrangement for reducing gap losses in the adjustable guide vanes of fluid flow machines, particularly gas turbine engines
    Patent number: 4195964
    Abstract: An arrangement for reducing the gap formed by the adjustable axial-flow guide vanes of fluid flow engines, such as gas turbine engines, between the root-sided lower edges of the vane airfoil and the thereto contiguous outer wall of an annular flow passageway. Grooves are formed in the outer wall of the flow passageway above a leading and/or trailing lower edge of the vane airfoil; a soft vane base-covering coating filling said grooves; and recesses formed in the coating-filled grooves slightly above the pivot plane of the respective lower vane edges.
    Type: Grant
    Filed: August 14, 1978
    Date of Patent: April 1, 1980
    Assignee: Motoren- und Turbinen-Union Munchen GmbH
    Inventors: Eckhard Kraft, Volker Lunneman