Patents by Inventor David Martin Ellis

David Martin Ellis 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).

  • Wellbore tubular air quenching
    Patent number: 11198919
    Abstract: A system for air quenching a heat treated element comprises a tubular component, an internal air quench device moveably disposed within the interior of the tubular component, and an external air quench device moveably disposed about the tubular component. The internal air quench device comprises a nozzle configured to induce an airflow within the tubular component. The external air quenching device can comprise an annular ring disposed about the tubular component that is configured to generate a cone of air about the tubular component.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: December 14, 2021
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventors: David Martin Ellis, Luis Marcos Cadena, Christopher Alan Conrey, Daryl Stevenson
  • WELLBORE TUBULAR AIR QUENCHING
    Publication number: 20190276908
    Abstract: A system for air quenching a heat treated element comprises a tubular component, an internal air quench device moveably disposed within the interior of the tubular component, and an external air quench device moveably disposed about the tubular component. The internal air quench device comprises a nozzle configured to induce an airflow within the tubular component. The external air quenching device can comprise an annular ring disposed about the tubular component that is configured to generate a cone of air about the tubular component.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 12, 2019
    Inventors: David Martin Ellis, Luis Marcos Cadena, Christopher Alan Conrey, Daryl Stevenson
  • Wellbore tubular air quenching
    Patent number: 10344346
    Abstract: A system for air quenching a heat treated element comprises a tubular component, an internal air quench device moveably disposed within the interior of the tubular component, and an external air quench device moveably disposed about the tubular component. The internal air quench device comprises a nozzle configured to induce an airflow within the tubular component. The external air quenching device can comprise an annular ring disposed about the tubular component that is configured to generate a cone of air about the tubular component.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: July 9, 2019
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventors: David Martin Ellis, Luis Marcos Cadena, Christopher Alan Conrey, Daryl Stevenson
  • WELLBORE TUBULAR AIR QUENCHING
    Publication number: 20160298206
    Abstract: A system for air quenching a heat treated element comprises a tubular component, an internal air quench device moveably disposed within the interior of the tubular component, and an external air quench device moveably disposed about the tubular component. The internal air quench device comprises a nozzle configured to induce an airflow within the tubular component. The external air quenching device can comprise an annular ring disposed about the tubular component that is configured to generate a cone of air about the tubular component.
    Type: Application
    Filed: April 9, 2015
    Publication date: October 13, 2016
    Inventors: David Martin Ellis, Luis Marcos Cadena, Christopher Alan Conrey, Daryl Stevenson