Patents by Inventor Daryl Stevenson
Daryl Stevenson 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).
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Patent number: 11473161Abstract: A device for heating and quenching a tubular member has a central axis. The device includes a first quenching ring, a second quenching ring axially spaced from the first quenching ring, and a heating ring axially positioned between the first quenching ring and the second quenching ring. Each quenching ring and the heating ring is configured to receive the tubular member. The heating ring is fixably coupled to the first quenching ring and the second quenching ring. The heating ring includes an induction coil configured to heat an annular target zone along the tubular member. The first quenching ring is configured to deliver a first quenching fluid to the target zone and a first annular heat affected zone along the tubular member, and the second quenching ring is configured to deliver a second quenching fluid to the target zone and a second annular heat affected zone along the tubular member.Type: GrantFiled: November 21, 2018Date of Patent: October 18, 2022Assignee: GRANT PRIDECO, L.P.Inventors: Daryl Stevenson, David Charles Lynch, Christopher Alan Conrey, Michael Wade McCain
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Patent number: 11198919Abstract: 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: GrantFiled: May 24, 2019Date of Patent: December 14, 2021Assignee: NATIONAL OILWELL VARCO, L.P.Inventors: David Martin Ellis, Luis Marcos Cadena, Christopher Alan Conrey, Daryl Stevenson
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Patent number: 10841985Abstract: A system and method for heat treating a tubular. In one embodiment, a system for heat treating a tubular includes a first coil and a second coil. The first coil is configured to circumferentially surround the tubular and induce, from without the tubular, current flow in a cylindrical portion of the tubular adjacent the first coil. The second coil is configured to be inserted into a bore of the tubular and induce, from within the tubular, in conjunction with the first coil, current flow in the cylindrical portion of the tubular.Type: GrantFiled: July 2, 2018Date of Patent: November 17, 2020Assignee: NATIONAL OILWELL VARCO, L.P.Inventors: Kevin Joseph Wyble, Daniel Lyle Hannahs, Daryl Stevenson, Shawn Lee Cunningham
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Publication number: 20200299794Abstract: A device for heating and quenching a tubular member has a central axis. The device includes a first quenching ring, a second quenching ring axially spaced from the first quenching ring, and a heating ring axially positioned between the first quenching ring and the second quenching ring. Each quenching ring and the heating ring is configured to receive the tubular member. The heating ring is fixably coupled to the first quenching ring and the second quenching ring. The heating ring includes an induction coil configured to heat an annular target zone along the tubular member. The first quenching ring is configured to deliver a first quenching fluid to the target zone and a first annular heat affected zone along the tubular member, and the second quenching ring is configured to deliver a second quenching fluid to the target zone and a second annular heat affected zone along the tubular member.Type: ApplicationFiled: November 21, 2018Publication date: September 24, 2020Applicant: GRANT PRIDECO, L.P.Inventors: Daryl Stevenson, David Charles Lynch, Christopher Alan Conrey, Michael Wade McCain
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Publication number: 20190276908Abstract: 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: ApplicationFiled: May 24, 2019Publication date: September 12, 2019Inventors: David Martin Ellis, Luis Marcos Cadena, Christopher Alan Conrey, Daryl Stevenson
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Patent number: 10344346Abstract: 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: GrantFiled: April 9, 2015Date of Patent: July 9, 2019Assignee: NATIONAL OILWELL VARCO, L.P.Inventors: David Martin Ellis, Luis Marcos Cadena, Christopher Alan Conrey, Daryl Stevenson
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Publication number: 20180324902Abstract: A system and method for heat treating a tubular. In one embodiment, a system for heat treating a tubular includes a first coil and a second coil. The first coil is configured to circumferentially surround the tubular and induce, from without the tubular, current flow in a cylindrical portion of the tubular adjacent the first coil. The second coil is configured to be inserted into a bore of the tubular and induce, from within the tubular, in conjunction with the first coil, current flow in the cylindrical portion of the tubular.Type: ApplicationFiled: July 2, 2018Publication date: November 8, 2018Inventors: Kevin Joseph Wyble, Daniel Lyle Hannahs, Daryl Stevenson, Shawn Lee Cunningham
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Patent number: 10034330Abstract: A system and method for heat treating a tubular. In one embodiment, a system for heat treating a tubular includes a first coil and a second coil. The first coil is configured to circumferentially surround the tubular and induce, from without the tubular, current flow in a cylindrical portion of the tubular adjacent the first coil. The second coil is configured to be inserted into a bore of the tubular and induce, from within the tubular, in conjunction with the first coil, current flow in the cylindrical portion of the tubular.Type: GrantFiled: March 15, 2013Date of Patent: July 24, 2018Assignee: NATIONAL OILWELL VARCO, L.P.Inventors: Kevin Joseph Wyble, Daniel Lyle Hannahs, Daryl Stevenson, Shawn Lee Cunningham
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Publication number: 20160298206Abstract: 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: ApplicationFiled: April 9, 2015Publication date: October 13, 2016Inventors: David Martin Ellis, Luis Marcos Cadena, Christopher Alan Conrey, Daryl Stevenson
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Publication number: 20140263284Abstract: A system and method for heat treating a tubular. In one embodiment, a system for heat treating a tubular includes a first coil and a second coil. The first coil is configured to circumferentially surround the tubular and induce, from without the tubular, current flow in a cylindrical portion of the tubular adjacent the first coil. The second coil is configured to be inserted into a bore of the tubular and induce, from within the tubular, in conjunction with the first coil, current flow in the cylindrical portion of the tubular.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: NATIONAL OILWELL VARCO, L.P.Inventors: Kevin Joseph Wyble, Daniel Lyle Hannahs, Daryl Stevenson, Shawn Lee Cunningham