Patents by Inventor Mark Christopher James

Mark Christopher James 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).

  • Pump diffuser anti-spin device
    Patent number: 6726449
    Abstract: In a downhole centrifugal pump, diffusers are stacked one on top of each other inside of tubular pump housing without contacting the pump drive shaft or impellers. A first compressive device applies a pre-compressive force to a stack of diffusers to prevent the diffusers from rotating inside the tubular housing of the pump with the drive shaft. A second compressive device located between the first compressive device and the stack of diffusers applies another compressive load on the stack of diffusers in the event the first compressive device ceases to apply the compressive load.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: April 27, 2004
    Assignee: Baker Hughes Incorporated
    Inventors: Mark Christopher James, Terry Wayne Shafer
  • Pump diffuser anti-spin device
    Publication number: 20030185676
    Abstract: In a downhole centrifugal pump, diffusers are stacked one on top of each other inside of tubular pump housing without contacting the pump drive shaft or impellers. A first compressive device applies a pre-compressive force to a stack of diffusers to prevent the diffusers from rotating inside the tubular housing of the pump with the drive shaft. A second compressive device located between the first compressive device and the stack of diffusers applies another compressive load on the stack of diffusers in the event the first compressive device ceases to apply the compressive load.
    Type: Application
    Filed: March 18, 2002
    Publication date: October 2, 2003
    Inventors: Mark Christopher James, Terry Wayne Shafer