Patents by Inventor Nicholas Daniel Johnson

Nicholas Daniel Johnson 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).

  • Self-aligning and vibration damping bearings in a submersible well pump
    Patent number: 9334865
    Abstract: An electrical submersible pump assembly has a centrifugal pump with stages, each having an impeller and a diffuser. A shaft extending from an electrical motor rotates the impellers. In the stages, a thrust runner is coupled to the shaft for rotation in unison. A bushing is non rotatably mounted in a receptacle in the diffuser. The bushing has a bore that receives the body of the runner in sliding, rotating engagement. The bushing has a thrust receiving end engaged by the thrust face of the runner in rotating, sliding engagement to transfer thrust from the runner to the diffuser. An elastomeric compliant member between a cylindrical exterior of the bushing and the receptacle allows limited radial movement of the bushing relative to the diffuser.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: May 10, 2016
    Assignee: Baker Hughes Incorporated
    Inventors: Nicholas Daniel Johnson, Arturo Luis Poretti, Kevin R. Bierig
  • Self-Aligning and Vibration Damping Bearings in a Submersible Well Pump
    Publication number: 20150226219
    Abstract: An electrical submersible pump assembly has a centrifugal pump with stages, each having an impeller and a diffuser. A shaft extending from an electrical motor rotates the impellers. In the stages, a thrust runner is coupled to the shaft for rotation in unison. A bushing is non rotatably mounted in a receptacle in the diffuser. The bushing has a bore that receives the body of the runner in sliding, rotating engagement. The bushing has a thrust receiving end engaged by the thrust face of the runner in rotating, sliding engagement to transfer thrust from the runner to the diffuser. An elastomeric compliant member between a cylindrical exterior of the bushing and the receptacle allows limited radial movement of the bushing relative to the diffuser.
    Type: Application
    Filed: April 22, 2015
    Publication date: August 13, 2015
    Inventors: Nicholas Daniel Johnson, Arturo Luis Poretti, Kevin R. Bierig
  • Self-Aligning and Vibration Damping Bearings in a Submersible Well Pump
    Publication number: 20150071799
    Abstract: An electrical submersible pump assembly has a centrifugal pump with stages, each having an impeller and a diffuser. A shaft extending from an electrical motor rotates the impellers. In the stages, a thrust runner is coupled to the shaft for rotation in unison. A bushing is non rotatably mounted in a receptacle in the diffuser. The bushing has a bore that receives the body of the runner in sliding, rotating engagement. The bushing has a thrust receiving end engaged by the thrust face of the runner in rotating, sliding engagement to transfer thrust from the runner to the diffuser. An elastomeric compliant member between a cylindrical exterior of the bushing and the receptacle allows limited radial movement of the bushing relative to the diffuser.
    Type: Application
    Filed: September 10, 2013
    Publication date: March 12, 2015
    Inventors: Nicholas Daniel Johnson, Arturo L. Poretti, Kevin R. Bierig