Patents by Inventor Francisco Alfredo Quiroga

Francisco Alfredo Quiroga 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).

  • Super high torque dope-free threaded joint
    Patent number: 8186722
    Abstract: A high torque threaded joint comprising a box member having threads and a pin member having threads (10) configured and positioned to mate with the threads of the box member. There is a flank-to-flank contact thread profile using trapezoidal threads with both a positive and very low load flank angle, (?1 or a); and a positive and very low stabbing flank (14) angle, (?2, or b), wherein the threads are coated with a solid, dopefree surface treatment.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: May 29, 2012
    Assignee: Tenaris Connections Limited
    Inventors: Gabriel E. Carcagno, Francisco Alfredo Quiroga
  • SUPER HIGH TORQUE DOPE-FREE THREADED JOINT
    Publication number: 20100181762
    Abstract: A high torque threaded joint comprising a box member having threads and a pin member having threads (10) configured and positioned to mate with the threads of the box member. There- is a flank-to-flank contact thread profile using trapezoidal threads with both a positive and very low load flank angle, (?1 or a); and a positive and very low stabbin flank (14) angle, (?2, or b), wherein the threads are coated with a solid, dopefree surface treatment.
    Type: Application
    Filed: March 27, 2008
    Publication date: July 22, 2010
    Applicant: Tenaris Connectiona AG
    Inventors: Gabriel E. Carcagno, Francisco Alfredo Quiroga