Patents by Inventor Fredrick Hendren

Fredrick Hendren 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).

  • Patent number: 6959590
    Abstract: A self contained field sampling system for measuring engine exhaust emissions includes a mini-dilution tunnel adapted for the collection of proportional samples of emissions to be analyzed, an engine air intake flow measurement instrument, a system controller and data acquisition system, and an optionally portable generator to provide electrical power. Several probes withdraw dilute and undiluted exhaust for emission analysis. Various engine emissions may be isolated. As well, engine emissions mass rate may be calculated by reference to engine RPM, inlet flow rate, exhaust temperature and emissions output rate.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: November 1, 2005
    Assignee: Her Majesty The Queen in Right of Canada as represented by the Minister of the Environment
    Inventors: Fredrick Hendren, Bruce Ainslie
  • Publication number: 20050126513
    Abstract: A fuel system for feeding a non-stable emulsified fuel to a diesel engine, the improvement comprising a non-stable oil-in-water emulsion in which at least 90 percent of the droplets are less than 1 micrometer in diameter and the mixing chamber is positioned in relatively close proximity to the diesel engine such that the emulsion does not substantially de-emulsify between the mixing chamber and the diesel engine.
    Type: Application
    Filed: January 28, 2003
    Publication date: June 16, 2005
    Inventor: Fredrick Hendren
  • Publication number: 20030136177
    Abstract: A self contained field sampling system for measuring engine exhaust emissions includes a mini-dilution tunnel adapted for the collection of proportional samples of emissions to be analyzed, an engine air intake flow measurement instrument, a system controller and data acquisition system, and an optionally portable generator to provide electrical power. Several probes withdraw dilute and undiluted exhaust for emission analysis. Various engine emissions may be isolated. As well, engine emissions mass rate may be calculated by reference to engine RPM, inlet flow rate, exhaust temperature and emissions output rate.
    Type: Application
    Filed: November 19, 2002
    Publication date: July 24, 2003
    Inventors: Fredrick Hendren, Bruce Ainslie