Patents by Inventor Marcel A. S. Lafargue

Marcel A. S. Lafargue 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).

  • Main rotor for a helicopter
    Patent number: 4273511
    Abstract: The invention relates to a rotor, specially for a helicopter. This rotor comprises a plurality of blades connected to a rotor hub by flexible, twistable, substantially radial strips, surrounded by tubular rigid sleeves. Rigid rings are secured to the inner ends of the tubular sleeves. Spherical ball and socket joint members are inserted between each radial strip and the rigid ring. The joint members are associated with frequency adaptors for drag movements of the corresponding blade.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: June 16, 1981
    Assignee: Societe Nationale Industrielle Aerospatiale
    Inventors: Rene L. Mouille, Marcel A. S. Lafargue