Patents by Inventor Billy R. Blackwell

Billy R. Blackwell 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 for reducing fuel vapor
    Patent number: 6000426
    Abstract: A system to collect and control the flow of fuel vapor within a vehicle fuel system. In one embodiment, a vapor control unit mounted in the fuel tank permits fuel vapor to be drawn into a tank fill pipe when liquid fuel is being added to the fuel tank to condense at least a portion of the fuel vapor. In a second embodiment a diaphragm actuated valve permits fuel vapor flow from the fuel tank into the tank fill pipe when liquid fuel is being added to the tank to condense at least a portion of the fuel vapor. By condensing the fuel vapor the system reduces the total amount of fuel vapor within the fuel system while preventing the escape of fuel vapor which is hazardous to the environment.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: December 14, 1999
    Assignee: Walbro Corporation
    Inventors: Charles H. Tuckey, Billy R. Blackwell, Lawrence E. Egle