Patents by Inventor Kendall Thomas Duffield

Kendall Thomas Duffield 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).

  • Regeneration system and method for particulate traps
    Patent number: 7874148
    Abstract: An internal combustion engine system has an internal combustion engine with an intake for air and an exhaust for products of combustion. The engine has a turbocharger for pressurizing intake air in response to passage of the products of combustion. An exhaust aftertreatment device receives the exhaust from the engine to filter diesel particulates. A device for regenerating the exhaust aftertreatment device has a feed line and nozzle for injecting duel upstream of the exhaust aftertreatment device on a periodic basis. A system and method for purging the fuel line and the nozzle utilizes pressurized air from the engine turbocharger via an air tank when the regenerating device is not injecting fuel.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: January 25, 2011
    Assignee: Deere & Company
    Inventor: Kendall Thomas Duffield
  • REGENERATION SYSTEM AND METHOD FOR PARTICULATE TRAPS
    Publication number: 20080223340
    Abstract: An internal combustion engine system has an internal combustion engine with an intake for air and an exhaust for products of combustion. The engine has a turbocharger for pressurizing intake air in response to passage of the products of combustion. An exhaust aftertreatment device receives the exhaust from the engine to filter diesel particulates. A device for regenerating the exhaust aftertreatment device has a feed line and nozzle for injecting duel upstream of the exhaust aftertreatment device on a periodic basis. A system and method for purging the fuel line and the nozzle utilizes pressurized air from the engine turbocharger via an air tank when the regenerating device is not injecting fuel.
    Type: Application
    Filed: March 15, 2007
    Publication date: September 18, 2008
    Inventor: Kendall Thomas Duffield