Patents by Inventor Stephen Franklin Crain

Stephen Franklin Crain 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).

  • Variable Rate Pumping System
    Publication number: 20090252616
    Abstract: A pumping system comprising a motor, wherein the motor has an operating speed, a pump coupled to the motor, wherein the pump has a volumetric displacement, a fluid end coupled to the pump, wherein the fluid end is operable to draw fluid from an input and provide fluid to an output, and a control system operable to regulate the motor and the pump in order to provide fluid to the output at a selected pressure and flow rate within a continuous range of pressures and flow rates between the peak horsepower output and peak torque output of the motor.
    Type: Application
    Filed: June 15, 2009
    Publication date: October 8, 2009
    Applicant: Halliburton Energy Services, Inc.
    Inventors: John Dexter Brunet, David Mark Stribling, Todd J. Dean, James D. Roach, Stephen Franklin Crain
  • Variable rate pumping system
    Patent number: 7563076
    Abstract: A pumping system comprising a motor, wherein the motor has an operating speed, a pump coupled to the motor, wherein the pump has a volumetric displacement, a fluid end coupled to the pump, wherein the fluid end is operable to draw fluid from an input and provide fluid to an output, and a control system operable to regulate the motor and the pump in order to provide fluid to the output at a selected pressure and flow rate within a continuous range of pressures and flow rates between the peak horsepower output and peak torque output of the motor.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: July 21, 2009
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John Dexter Brunet, David Mark Stribling, Todd J. Dean, James D. Roach, Stephen Franklin Crain