Patents by Inventor Marvin W. Jutus

Marvin W. Jutus 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).

  • Hydraulic pumping unit with a variable speed triplex pump
    Patent number: 4066123
    Abstract: This invention is a hydraulic pumping unit which uses a cyclone feed pump means to vary the speed of the above-ground pump, while still providing proper cleaning of the power fluid for the downhole pump. The ability to conveniently change the speed of the above-ground pump allows the speed of the pump to be reduced whenever well conditions make such a reduction appropriate, and this provides a very substantial reduction in the cost of power for the prime mover (typically an electric motor). In addition to the cyclone feed pump and a speed control means to vary the speed at which the prime mover drives the above-ground pump, this invention uses a flowback line connected from the cyclone overflow to the feed pump inlet.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: January 3, 1978
    Assignee: Standard Oil Company (Indiana)
    Inventors: David R. Skinner, Marvin W. Jutus, Miles L. Sowell