Patents by Inventor Julien Warret

Julien Warret 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 guiding a flexible tube between annular and flattened cross section
    Patent number: 4314462
    Abstract: A tube of flexible material moving longitudinally undergoes transition between annular cross section and flattened straight cross section, without change in the length of perimeter of its cross sections, by one stage of changing between the annular cross section and a rectangular cross section, and another stage of changing between that rectangular cross section and the flattened cross section through successively longer and narrower rectangular cross sections. The method is applicable to material produced by a circular knitting machine. Preferably there is a polyhedral guide within the tube.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: February 9, 1982
    Assignees: Institut Textile de France, Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Jean-Paul Ducol, Jacques Mesny, Julien Warret