Patents by Inventor Gilles Assens

Gilles Assens 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 for controlling taper pipe thread and corresponding control devices
    Patent number: 6502041
    Abstract: A method for the inspection of male or female tapered threads located at the extremities of metal pipes. The pitch diameter of the threads in a measuring plane located substantially in the middle of a zone of perfect threads is inspected using a plane diameter measuring device while the pitch diameter of the threads is conventionally defined by the specification API 5B in the plane of the last perfect male thread. The pitch diameter of the threads measured is compared with an estimated value calculated from the nominal value of the pitch diameter in the plane P0, from the distance between P0 and P1, and a plot value for the taper, itself a function of the distribution of the tapers formed.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: December 31, 2002
    Assignee: Vallourec Mannesmann Oil & Gas France
    Inventors: Thierry Noel, Gilles Assens