Patents by Inventor Louis F. Jumelle

Louis F. Jumelle 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).

  • Sealing device for turbine blades of a turbojet engine
    Patent number: 4527385
    Abstract: A sealing device is disclosed for maintaining a small positive clearance between the sealing sectors and the turbine blade tips of a turbojet engine. The sealing segments are connected to an internal ring structure and an external ring structure located within the casing of the jet engine. The two ring structures serve to expand and contract the diameter of the ring formed by the sealing segments in conjunction with the expansion and contraction of the turbine blades for stabilized and transient engine operating modes. The device utilizes ventilating air taken from a stage of the jet engine compressor to cause the radial expansion or contraction of the internal and external rings in direct conjunction with the conditions under which the engine is operating.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: July 9, 1985
    Assignee: Societe Nationale d'Etude et Je Construction de Moteurs d'Aviation "S.N.E.C.M.A."
    Inventors: Louis F. Jumelle, Marcel R. Soligny