Patents by Inventor Dong P. Phung

Dong P. Phung 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).

  • Downhole motor coupling systems and methods
    Patent number: 9670727
    Abstract: A drilling system includes a drillstring and a power section further including a stator having a stator axis and a rotor within the stator. The rotor rotates eccentrically within the stator in response to fluid flowing therebetween. Additionally, the system includes a coupling section including first, second, and third rotation members having a first, second, and third axes, respectively. The third rotation member is coupled to the first and second rotation members. The third rotation member is configured to move radially relative to the first and second rotation members as the first, second, and third rotation members rotate about the first, second, and third axes, respectively. Further, the system includes an input shaft coupled to the rotor and first rotation member. The input shaft and first rotation member rotate with the rotor eccentrically to the stator axis and the second rotation member rotates concentrically about the stator axis.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: June 6, 2017
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventors: Dong P. Phung, Sorin Gabriel Teodorescu
  • DOWNHOLE MOTOR COUPLING SYSTEMS AND METHODS
    Publication number: 20150034388
    Abstract: A drilling system includes a drillstring and a power section further including a stator having a stator axis and a rotor within the stator. The rotor rotates eccentrically within the stator in response to fluid flowing therebetween. Additionally, the system includes a coupling section including first, second, and third rotation members having a first, second, and third axes, respectively. The third rotation member is coupled to the first and second rotation members. The third rotation member is configured to move radially relative to the first and second rotation members as the first, second, and third rotation members rotate about the first, second, and third axes, respectively. Further, the system includes an input shaft coupled to the rotor and first rotation member. The input shaft and first rotation member rotate with the rotor eccentrically to the stator axis and the second rotation member rotates concentrically about the stator axis.
    Type: Application
    Filed: July 29, 2014
    Publication date: February 5, 2015
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventors: Dong P. Phung, Sorin Gabriel Teodorescu