Patents by Inventor Xiao Nan Lu

Xiao Nan Lu 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).

  • Dual ESP with selectable pumps
    Patent number: 11773857
    Abstract: A pumping system includes a motor and a drive shaft configured for rotation by the motor. The pumping system includes an upper pump positioned above the motor, an upper pump shaft and an upper directional coupling connected between the drive shaft and the upper pump shaft. The upper directional coupling is configured to lock the upper pump shaft to the drive shaft when the drive shaft is rotated in a first direction. The pumping system further includes a lower pump positioned below the motor, a lower pump shaft, and a lower directional coupling connected between the drive shaft and the lower pump shaft. The lower directional coupling is configured to lock the lower pump shaft to the drive shaft when the drive shaft is rotated in a second direction.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: October 3, 2023
    Assignee: Baker Hughes Holdings LLC
    Inventors: Xiao Nan Lu, Joseph Robert McManus, Howard Thompson, Zheng Ye, Risa Rutter
  • Dual ESP with Selectable Pumps
    Publication number: 20200116154
    Abstract: A pumping system includes a motor and a drive shaft configured for rotation by the motor. The pumping system includes an upper pump positioned above the motor, an upper pump shaft and an upper directional coupling connected between the drive shaft and the upper pump shaft. The upper directional coupling is configured to lock the upper pump shaft to the drive shaft when the drive shaft is rotated in a first direction. The pumping system further includes a lower pump positioned below the motor, a lower pump shaft, and a lower directional coupling connected between the drive shaft and the lower pump shaft. The lower directional coupling is configured to lock the lower pump shaft to the drive shaft when the drive shaft is rotated in a second direction.
    Type: Application
    Filed: October 14, 2019
    Publication date: April 16, 2020
    Applicant: Baker Hughes, a GE Company, LLC
    Inventors: Xiao Nan Lu, Joseph Robert McManus, Howard Thompson, Zheng Ye, Risa Rutter