Patents by Inventor Adrian C. Billetdeaux

Adrian C. Billetdeaux 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).

  • Infrared fluid analyzer
    Patent number: 4902896
    Abstract: An infrared fluid analyzer for the detection of end tidal CO.sub.2. The analyzer is comprised of an IR source that irradiates a chamber filled with gas. CO.sub.2 present in the chamber absorbs the IR radiation at a certain wavelength. An IR detector determines the amount of IR radiation passing through the chamber unabsorbed and produces a signal corresponding to the CO.sub.2 in the chamber. At predetermined intervals a zero gas is reintroduced into the chamber for the system to be recalibrated. A span gas is only needed initially for calibration purposes.
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: February 20, 1990
    Assignee: Mine Safety Appliances Company
    Inventors: Glenn H. Fertig, Sr., Adrian C. Billetdeaux