Patents by Inventor Robert Nakache

Robert Nakache 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).

  • Method and apparatus for producing a bent angle piece from a sheet-metal
    Patent number: 4117704
    Abstract: A method and apparatus for producing a bent angle piece from a sheet-metal. The sheet-metal is shaped into a cylinder 1 split along a generating line so that the ends of the sheet-metal can be overlapping, a portion of the said cylinder is clamped on a support such as a mandrel 3 moving in rotation about the axis of the said cylinder, and during the rotation of the said support, successive areas adjacent the unclamped portion 1b of the sheet-metal cylinder are bent progressively either outwardly or inwardly until said unclamped portion reaches a position which is at least nearly perpendicular to the axis 3a of the cylindrical portion so as to form an annular flange joined to the cylindrical flange constituted by the portion of cylindrical flange clamped on the support.
    Type: Grant
    Filed: May 13, 1977
    Date of Patent: October 3, 1978
    Assignee: Societe Coil Protection Service
    Inventors: Robert Nakache, Christian Lequeux