Patents by Inventor Peter Platt Elderton

Peter Platt Elderton 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).

  • Fluid sensitive shutdown for well pump
    Patent number: 4119865
    Abstract: A system for disconnecting an oil well pump driving apparatus from a circuit in the absence of a liquid or the like in a pipeline connected from the pump. A vertical member having a cavity in communication with the interior of the pipeline has vertically spaced differential pressure unit (DPU) inlets. The DPU shuts down the pump motor when there is no liquid in the pipeline.
    Type: Grant
    Filed: August 18, 1977
    Date of Patent: October 10, 1978
    Assignee: International Telephone and Telegraph Corporation
    Inventor: Peter Platt Elderton