Patents by Inventor Gilbert Degrande

Gilbert Degrande 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 of bending a thick metal tube, and apparatus for implementing the method
    Patent number: 4686844
    Abstract: A method and apparatus for bending thick metal tubes is disclosed and is characterized in that thermal insulation is disposed inside the heated zone of the tube being bent, and that the thickness of said thermal insulation is great enough to considerably reduce the temperature gradient between the inside and outside surfaces of the tube in said heated zone.
    Type: Grant
    Filed: April 2, 1986
    Date of Patent: August 18, 1987
    Assignee: Stein Industrie
    Inventors: Jacques Nicolas, Gilbert Degrande