Patents by Inventor Mark Pounder

Mark Pounder 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).

  • Variable volume chamber device for preventing leakage in an open nozzle injector
    Patent number: 5845623
    Abstract: A leak prevention device including an expandable chamber and control valve for preventing fuel leakage into the combustion chambers of a internal combustion engine equipped with a common rail fule injection system including open nozzle injectors and a shut off valve mounted in the common rail upstream of the fuel injectors to isolate, when closed, the fuel injectors from the source of fuel under pressure. The expandable chamber contains a variable volume held in its collapsed condition during engine operation and expanded upon engine shutdown sufficiently to prevent the flow of fuel from any injector into the corresponding combustion chamber.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: December 8, 1998
    Assignee: Cummins Engine Company, Inc.
    Inventors: Norman C. Blizard, Raymond J. Amlung, George L. Muntean, Edward D. Smith, Mark Pounder, Dan K. Vetters