Patents by Inventor Maurice Louis Duret

Maurice Louis Duret 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).

  • Helicopter cabin and method of making same
    Patent number: 4053126
    Abstract: The present invention relates to a process for making a thin-walled composite structure having resistance profiled elements, wherein a rotational-moulding mould is made, in the shape of said structure, then resistant profiled elements made of heat-conductive material are positioned in said mould, in order to form a main resistant frame-work for said structure, after which a suitable synthetic material is introduced into the mould and the known operations of rotational moulding are carried out. The structure thus produced may be used for the construction of aerodynes, and in particular in helicopter construction.
    Type: Grant
    Filed: November 19, 1975
    Date of Patent: October 11, 1977
    Assignee: Societe Nationale Industrielle Aerospatiale
    Inventors: Maurice Louis Duret, Pierre Barnoin