Patents by Inventor Barry S. Welton

Barry S. Welton 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).

  • High fluid level pump off controller and process
    Patent number: 4302157
    Abstract: A process and system for distinguishing between actual and false pump off of a well and for shutting in the well only upon the occurrence of actual pump off. The process and system employs the principle that pump off may occur only after a not pumped off condition has been detected.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: November 24, 1981
    Assignee: End Devices, Inc.
    Inventors: Barry S. Welton, G. Wayne Westerman
  • Well pump-off controller
    Patent number: 4058757
    Abstract: A system for measuring current or load for shutting down a motor of a walking beam type pumping unit in the event that pump-off occurs. The system employs a peak picker which picks either minimum current or maximum load and an integrator coupled to the peak picker for integrating current or load during each stroke cycle. A threshold device coupled to the output of the integrator produces a control signal for shutting down the motor if the integrator output fails to reach a predetermined threshold during each stroke cycle.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: November 15, 1977
    Assignee: End Devices, Inc.
    Inventors: Barry S. Welton, Granval W. Westerman, Michael E. Hill
  • Clamp-on transducer for well unit
    Patent number: 3965736
    Abstract: Strain measuring devices for measuring the strain in the polish rod of a rod-pumped well unit. The devices include a body member to which strain gages are bonded, and further include clamp means for detachably affixing the devices directly to a polish rod. Embodiments are disclosed in which the body member is in the form of a strap, in the form of a split cylinder, or as an elongated bar with a section of reduced cross-section.
    Type: Grant
    Filed: February 13, 1974
    Date of Patent: June 29, 1976
    Assignee: Energy Systems, Inc.
    Inventors: Barry S. Welton, G. Wayne Westerman