Patents by Inventor James W. Donovan

James W. Donovan 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 saving apparatus
    Patent number: 3960133
    Abstract: Apparatus is disclosed which is useful for conserving fuel and which comprises a means for preventing or controlling the opening of a valve, commonly called a butterfly valve, of a carburetor, beyond a pre-selected point whereby the flow of fuel into the intake manifold is controlled. Disclosed more particularly is an improved gasket for insertion between the carburetor and intake manifold of a vehicle.
    Type: Grant
    Filed: March 1, 1974
    Date of Patent: June 1, 1976
    Assignee: Barry J. Nace
    Inventor: James W. Donovan