Patents Assigned to Polyphase Engineered Controls
  • Reciprocating pump control system
    Patent number: 6890156
    Abstract: A pumpjack speed control system includes a user interface, a controller and a variable speed drive. The user interface includes a mathematical representation of the pumpjack geometry which permits the conversion of rod speed profiles to crank speed profiles.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: May 10, 2005
    Assignee: Polyphase Engineered Controls
    Inventors: Jeff Watson, Ramesh Aggarwal, Hari Upadhyay