Patents by Inventor Timothy A. Nevius

Timothy A. Nevius 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).

  • Acoustic flowmeter calibration method
    Patent number: 7124621
    Abstract: An acoustic flowmeter calibration method and sampling system address a variation in acoustic transducer delay time with increasing temperature. In one aspect, calibration of the path length between the sending and receiving transducers and calibration of the transducer delay time over a wide temperature range are optimized. In another aspect, the flowmeter output is temperature compensated based on the exhaust flowmeter gas temperature. These two aspects may be embodied in an ultrasonic flowmeter for exhaust gas measurement individually or in combination in accordance with the invention.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: October 24, 2006
    Assignee: Horiba Instruments, Inc.
    Inventor: Timothy A. Nevius
  • Acoustic flowmeter calibration method
    Publication number: 20060016243
    Abstract: An acoustic flowmeter calibration method and sampling system address a variation in acoustic transducer delay time with increasing temperature. In one aspect, calibration of the path length between the sending and receiving transducers and calibration of the transducer delay time over a wide temperature range are optimized. In another aspect, the flowmeter output is temperature compensated based on the exhaust flowmeter gas temperature. These two aspects may be embodied in an ultrasonic flowmeter for exhaust gas measurement individually or in combination in accordance with the invention.
    Type: Application
    Filed: July 21, 2004
    Publication date: January 26, 2006
    Inventor: Timothy Nevius
  • Vehicle ultraviolet gas emission analysis
    Publication number: 20040168504
    Abstract: A vehicle gas emission analyzer assembly for a vehicle having a passenger compartment includes a gas analyzer system adapted to determine concentration and/or mass flow of at least one exhaust gas of an internal combustion engine. The analyzer may include a particular housing for the gas analyzer system. The gas analyzer system may include a hydrocarbon gas analyzer that is operated at a temperature that is sufficiently high to reduce deposits of hydrocarbon molecules present in the sample gas. The gas analyzer may include an ultraviolet source including a discharge lamp having a discrete emission line at an absorption frequency for a particular nitrogen-based gas.
    Type: Application
    Filed: March 4, 2004
    Publication date: September 2, 2004
    Applicant: Sensors Inc.
    Inventors: Gideon Eden, Susan Rauschl, Timothy A. Nevius
  • Vehicle gas emission sampling and analysis assembly
    Publication number: 20020026822
    Abstract: A vehicle gas emission analyzer assembly for a vehicle having a passenger compartment includes a gas analyzer system adapted to determine concentration and/or mass flow of at least one exhaust gas of an internal combustion engine. The analyzer may include a particular housing for the gas analyzer system. The gas analyzer system may include a hydrocarbon gas analyzer that is operated at a temperature that is sufficiently high to reduce deposits of hydrocarbon molecules present in the sample gas. The gas analyzer may include an ultraviolet source including a discharge lamp having a discrete emission line at an absorption frequency for a particular nitrogen-based gas.
    Type: Application
    Filed: July 24, 2001
    Publication date: March 7, 2002
    Inventors: Andrew R. Reading, Carl D. Ensfield, Gideon Eden, Susan Rauschl, Timothy A. Nevius, Gerhard Wiegleb, Robert K. Zummer, Atul Shah