Patents by Inventor Robert Jen-Yue Du

Robert Jen-Yue Du 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).

  • Patent number: 10822907
    Abstract: A wellhead assembly includes an outer wellhead member having a bore and an inner wellhead member located in the bore, defining an annular pocket between the outer and inner wellhead members. A sealing assembly is located within the annular pocket, the sealing assembly having an annular seal and an energizing ring. The energizing ring engages inner and outer legs of the annular seal to push the inner and outer legs into sealing engagement with the inner and outer wellhead members. A retainer nut is threadingly attached to the free end of the outer leg of the sealing assembly. Mating grooves are located on one of an inner diameter of the retainer nut and an outer diameter of the energizing ring and mating protrusions located on the other. The mating protrusions mate with the mating grooves to prevent relative axial movement between the energizing ring and the annular seal.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: November 3, 2020
    Assignee: VETCO GRAY INC.
    Inventors: Robert Jen-Yue Du, Dinesh Narayan, Durai Balaji, David Lawrence Ford, Baozhi Zhu, Krishnanand Anandan, Kendra Limbrick
  • Publication number: 20190234169
    Abstract: A wellhead assembly includes an outer wellhead member having a bore and an inner wellhead member located in the bore, defining an annular pocket between the outer and inner wellhead members. A sealing assembly is located within the annular pocket, the sealing assembly having an annular seal and an energizing ring. The energizing ring engages inner and outer legs of the annular seal to push the inner and outer legs into sealing engagement with the inner and outer wellhead members. A retainer nut is threadingly attached to the free end of the outer leg of the sealing assembly. Mating grooves are located on one of an inner diameter of the retainer nut and an outer diameter of the energizing ring and mating protrusions located on the other. The mating protrusions mate with the mating grooves to prevent relative axial movement between the energizing ring and the annular seal.
    Type: Application
    Filed: March 18, 2019
    Publication date: August 1, 2019
    Applicant: Vetco Gray, LLC
    Inventors: Robert Jen-Yue Du, Dinesh Narayan, Durai Balaji, David Lawrence Ford, Baozhi Zhu, Krishnanand Anandan, Kendra Limbrick
  • Patent number: 10233711
    Abstract: A wellhead assembly includes an outer wellhead member having a bore and an inner wellhead member located in the bore, defining an annular pocket between the outer and inner wellhead members. A sealing assembly is located within the annular pocket, the sealing assembly having an annular seal and an energizing ring. The energizing ring engages inner and outer legs of the annular seal to push the inner and outer legs into sealing engagement with the inner and outer wellhead members. A retainer nut is threadingly attached to the free end of the outer leg of the sealing assembly. Mating grooves are located on one of an inner diameter of the retainer nut and an outer diameter of the energizing ring and mating protrusions located on the other. The mating protrusions mate with the mating grooves to prevent relative axial movement between the energizing ring and the annular seal.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: March 19, 2019
    Assignee: VETCO GRAY, LLC
    Inventors: Robert Jen-Yue Du, Dinesh Narayan, Durai Balaji, David Lawrence Ford, Baozhi Zhu, Krishnanand Anandan, Kendra Limbrick
  • Patent number: 9982503
    Abstract: A wellhead housing has a bore with an inner seal surface. A hanger with an outer seal surface lands in the bore. Wickers are formed on at least one of the seal surfaces. A metal seal ring lands between the seal surfaces, the seal ring having annular inner and outer legs separated by an annular slot. An energizing ring has inner and outer diameter surfaces that slide against the inner and outer legs of the seal ring when the energizing ring is moved downward in the slot to radially deform the inner and outer legs into sealing engagement with the wellhead housing and hanger. The energizing ring has an inner diameter relief and an outer diameter relief, each being a partially circumferential groove extending upward from a lower rim. The reliefs define a bridge of narrower radial thickness in the lower rim.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: May 29, 2018
    Assignee: VETCO GRAY, LLC
    Inventors: Joseph W. Pallini, Rick C. Hunter, David L. Ford, Robert Jen-Yue Du
  • Publication number: 20170284165
    Abstract: A wellhead housing has a bore with an inner seal surface. A hanger with an outer seal surface lands in the bore. Wickers are formed on at least one of the seal surfaces. A metal seal ring lands between the seal surfaces, the seal ring having annular inner and outer legs separated by an annular slot. An energizing ring has inner and outer diameter surfaces that slide against the inner and outer legs of the seal ring when the energizing ring is moved downward in the slot to radially deform the inner and outer legs into sealing engagement with the wellhead housing and hanger. The energizing ring has an inner diameter relief and an outer diameter relief, each being a partially circumferential groove extending upward from a lower rim. The reliefs define a bridge of narrower radial thickness in the lower rim.
    Type: Application
    Filed: March 31, 2016
    Publication date: October 5, 2017
    Inventors: Joseph W. Pallini, Rick C. Hunter, David L. Ford, Robert Jen-Yue Du
  • Publication number: 20170122058
    Abstract: A wellhead assembly includes an outer wellhead member having a bore and an inner wellhead member located in the bore, defining an annular pocket between the outer and inner wellhead members. A sealing assembly is located within the annular pocket, the sealing assembly having an annular seal and an energizing ring. The energizing ring engages inner and outer legs of the annular seal to push the inner and outer legs into sealing engagement with the inner and outer wellhead members. A retainer nut is threadingly attached to the free end of the outer leg of the sealing assembly. Mating grooves are located on one of an inner diameter of the retainer nut and an outer diameter of the energizing ring and mating protrusions located on the other. The mating protrusions mate with the mating grooves to prevent relative axial movement between the energizing ring and the annular seal.
    Type: Application
    Filed: November 2, 2015
    Publication date: May 4, 2017
    Applicant: VETCO GRAY INC.
    Inventors: Robert Jen-Yue Du, Dinesh Narayan, Durai Balaji, David Lawrence Ford, Baozhi Zhu, Krishnanand Anandan, Kendra Limbrick
  • Patent number: 8955910
    Abstract: A recliner heart spacer ring includes a body portion having a substantially consistent inner diameter. First and second inner cutouts are diametrically opposed from one another. First and second pairs of retention features are diametrically opposed from one another and are adapted to engage a swing gate of a recliner heart. The recliner heart spacer ring guides the swing gate as the swing gate transitions between a range of positions associated with a seat back.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: February 17, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Johnathan Andrew Line, Khaled Ayyash, Jeffrey Gabalski, Robert Jen-Yue Du
  • Publication number: 20130313877
    Abstract: A recliner heart spacer ring includes a body portion having a substantially consistent inner diameter. First and second inner cutouts are diametrically opposed from one another. First and second pairs of retention features are diametrically opposed from one another and are adapted to engage a swing gate of a recliner heart. The recliner heart spacer ring guides the swing gate as the swing gate transitions between a range of positions associated with a seat back.
    Type: Application
    Filed: April 25, 2013
    Publication date: November 28, 2013
    Inventors: Johnathan Andrew Line, Khaled Ayyash, Jeffrey Gabalski, Robert Jen-Yue Du