Patents by Inventor Thomas M. Asplund

Thomas M. Asplund 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).

  • Exhaust Venturi apparatus, system, and method
    Patent number: 8181453
    Abstract: An exhaust Venturi apparatus, system, and method includes an elongate housing for passage of exhaust gases, a Venturi mechanism disposed on the housing, the Venturi mechanism configured to create a low-pressure zone in the exhaust gases within the housing, and an aperture disposed in a side of the housing downstream of the Venturi mechanism, such that secondary air outside the housing is drawn into the exhaust stream. The aperture may comprise one or a plurality of apertures, small in cross-section compared to the housing cross-section, for minimizing sound emanating from the exhaust system. The Venturi mechanism may comprise a Venturi plate mounted between the housing and the engine.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: May 22, 2012
    Assignee: Fleetguard, Inc.
    Inventors: Gary D. Goplen, Thomas M. Asplund
  • EXHAUST VENTURI APPARATUS, SYSTEM, AND METHOD
    Publication number: 20110047997
    Abstract: An exhaust Venturi apparatus, system, and method includes an elongate housing for passage of exhaust gases, a Venturi mechanism disposed on the housing, the Venturi mechanism configured to create a low-pressure zone in the exhaust gases within the housing, and an aperture disposed in a side of the housing downstream of the Venturi mechanism, such that secondary air outside the housing is drawn into the exhaust stream. The aperture may comprise one or a plurality of apertures, small in cross-section compared to the housing cross-section, for minimizing sound emanating from the exhaust system. The Venturi mechanism may comprise a Venturi plate mounted between the housing and the engine.
    Type: Application
    Filed: June 1, 2006
    Publication date: March 3, 2011
    Inventors: Gary D. Goplen, Thomas M. Asplund