Patents by Inventor Keith G. Spangjer

Keith G. Spangjer 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: 5408973
    Abstract: A fuel supply system and method incorporates a fuel pump for pressurizing liquid fuel for use in an internal combustion engine. The pressurized fuel is supplied to a fuel injector mounted on a vaporization chamber; actuation signals applied to the fuel injector atomize a metered quantity of liquid fuel into the chamber. The atomized fuel travels a tortuous path in the chamber striking chamber walls heated by hot exhaust gas from the internal combustion engine. Vaporized fuels delivered from the vaporization chamber to a mixing chamber to be mixed with air to form a combustible fuel/air mixture. Air supplied to the mixing chamber is heated by exhaust heat prior to delivery to the mixing chamber. The combustible fuel/air mixture is then supplied to the intake manifold of the internal combustion engine.
    Type: Grant
    Filed: November 26, 1993
    Date of Patent: April 25, 1995
    Inventor: Keith G. Spangjer