Patents by Inventor Bruno J. M. Barbier

Bruno J. M. Barbier 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).

  • Process for manufacturing a blade
    Patent number: 4990205
    Abstract: The blade of composite materials and its manufacturing process according to the invention are such that the spar includes at least one bundle (10a, 10b) extending longitudinally in the shell (4), between the fillings of the leading edge (12a) and the trailing edge (12c) and which adheres directly to the laminated pressure face and suction face coverings, (4a, 4b) of the rigid shell (4).Beyond the blade footing (3), the spar is shaped to form a root loop flexible in torsion (8) and passing round an attaching socket (9) on the hub.Application to variable pitch multi-blade propellers for the streamlined tail rotors of helicopters.
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: February 5, 1991
    Assignee: Societe Nationale Industrielle Aerospatiale
    Inventors: Bruno J. M. Barbier, Jean A. Michaud-Soret
  • Blade of composite materials and its manufacturing process
    Patent number: 4892462
    Abstract: The blade of composite materials and its manufacturing process according to the invention are such that the spar includes at least one bundle (10a, 10b) extending longitudinally in the shell (4), between the fillings of the leading edge (12a) and the trailing edge (12c) and which adheres directly to the laminated pressure face and suction face coverings, (4a, 4b) of the rigid shell (4). Beyond the blade footing (3), the spar is shaped to form a root loop flexible in torsion (8) and passing round an attaching socket (9) on the hub. Application to variable pitch multi-blade propellers for the streamlined tail rotors of helicopters.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: January 9, 1990
    Assignee: Aerospatiale Societe Nationale Industrielle
    Inventors: Bruno J. M. Barbier, Jean A. Michaud-Soret