Patents Assigned to Rig Efficiency, Inc.
  • Closed loop power factor control for power supply systems
    Patent number: 4590416
    Abstract: A power factor controller for alternating current/direct current drilling rigs is provided which utilizes a uniquely controlled, unloaded, over-excited generator to provide reactive power to maintain the rig's power factor within prescribed limits during peak demand operations.
    Type: Grant
    Filed: November 9, 1984
    Date of Patent: May 20, 1986
    Assignee: Rig Efficiency, Inc.
    Inventors: Michael N. Porche, Louis G. Beauregard
  • Closed loop power factor control for drilling rigs
    Patent number: 4482857
    Abstract: A power factor controller for alternating current/direct current drilling rigs is provided which utilizes a uniquely controlled, unloaded, over-excited generator to provide reactive power to maintain the rig's power factor within prescribed limits during peak demand operations.
    Type: Grant
    Filed: August 8, 1983
    Date of Patent: November 13, 1984
    Assignee: Rig Efficiency, Inc.
    Inventors: Michael N. Porche, Louis G. Beauregard