Patents by Inventor John M. Hagey

John M. Hagey 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).

  • Gas bubble detector
    Patent number: 5455423
    Abstract: A gas bubble detector having a modulated IR source focused through a bandpass filter onto a venturi, formed in a sample tube, to illuminate the venturi with modulated filtered IR to detect the presence of gas bubbles as small as 0.01 cm or about 0.004" in diameter in liquid flowing through the venturi. Means are provided to determine the size of any detected bubble and to provide an alarm in the absence of liquid in the sample tube.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: October 3, 1995
    Assignee: Orbital Sciences Corporation
    Inventors: Bruce E. Mount, David E. Burchfield, John M. Hagey