Patents by Inventor Francis J. Parkinson

Francis J. Parkinson 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).

  • Pumping system
    Patent number: 4521162
    Abstract: A fluidic pumping system comprises a reverse flow diverter positioned below the level of a liquid to be pumped and inserted between a charge vessel and a delivery pipe. Control means including signal generating means, conveniently an ultrasonic transducer, effect alternate pressurizing and venting of the charge vessel for pumping the liquid. A pipe for the supply of compressed air to the charge vessel serves as a waveguide for the signals from the signal generating means.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: June 4, 1985
    Assignee: British Nuclear Fuels plc
    Inventor: Francis J. Parkinson