Patents by Inventor Vincent W. Devore

Vincent W. Devore 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).

  • Magnetic flowmeter with empty tube detection
    Patent number: 5895864
    Abstract: A magnetic flowmeter has a tube for supporting fluid flow and a circuit for indicating when the tube is empty. The circuit includes an amplifier connected to two electrodes in the tube and a variable resistor. The amplifier produces an oscillating signal when the tube is empty.The circuit is calibrated for a particular fluid by finding a range of resistances for the variable resistor at which the circuit provides an accurate indication that the tube is empty, and storing information in the processor indicating a resistance in the range for the fluid.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: April 20, 1999
    Assignee: The Foxboro Company
    Inventors: Shiquan Wang, Peter B. Lewis, Norman O. Fonteneau, Vincent W. Devore