Patents by Inventor Charles Ward Barry

Charles Ward Barry 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).

  • Centrifugal Pump with Coaxial Inlet and Outlet and Liquid Level Detector
    Publication number: 20120118412
    Abstract: A liquid handling system having a tank with a centrifugal pump for pumping the liquid out of the tank is disclosed. The centrifugal pump is located beneath tank and has a coaxial inlet-outlet. Capacitive sensors are used to detect the level of liquid in the tank, and control circuits are connected to the capacitive sensors and control the operation of the pump.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 17, 2012
    Inventor: Charles Ward Barry