Patents by Inventor Mark B. Woznick

Mark B. Woznick 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).

  • Apparatus and method of detecting a leak in an evaporative emissions system
    Patent number: 5637788
    Abstract: A apparatus and method of detecting a leak in an evaporative emissions system measures vapor flow out of the evaporative emissions system while maintaining a zero pressure difference from inside a fuel tank to atmosphere and provides a reference vapor flow variable dependent on the measurement (317). A pressurized vapor and leak flow variable is measured (323) dependent on measured vapor flow out of the evaporative emissions system while maintaining a pressure difference of 10" of water from inside the fuel tank to atmosphere. A leak is indicated (327) if a difference between the reference vapor flow variable and the pressurized vapor and leak flow variable is greater than a predetermined leak flow factor.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: June 10, 1997
    Assignee: Motorola Inc.
    Inventors: Donald J. Remboski, Steven L. Plee, Mark B. Woznick, John F. Foley