Patents by Inventor David E. Gamble

David E. Gamble 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).

  • Fuel system
    Patent number: 4510912
    Abstract: A fuel system for use with an internal combustion engine includes primary and secondary carburetors and vaporizing apparatus. When starting the engine, liquid fuel is supplied by a fuel pump to the primary carburetor via a first switchable valve means. After the engine has warmed sufficiently, liquid fuel is prevented from reaching the primary carburetor, and instead is supplied to the vaporizing apparatus via second switchable valve means. Vaporized fuel is supplied to the primary carburetor from the vaporizing apparatus via the secondary carburetor.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: April 16, 1985
    Inventor: David E. Gamble