Patents by Inventor Derek M. LARSEN

Derek M. LARSEN 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).

  • DOSING CONDUIT ARRANGEMENTS FOR EXHAUST AFTERTREATMENT SYSTEM
    Publication number: 20240183300
    Abstract: An aftertreatment device includes flow guides disposed within a dosing conduit. Exhaust enters through a perforated region of the dosing conduit and passes through the flow guides. The flow guides induce swirling or other turbulence to mix injected reactant with the exhaust gas. Various types of flow guides include cantilevered vanes, guide passageways, and louvered openings of a second conduit. Some types of flow guides induce localized mixing to inhibit deposit formation at the doser mounting unit. Other types of flow guides induce mixing downstream of the dosing conduit.
    Type: Application
    Filed: December 11, 2023
    Publication date: June 6, 2024
    Inventors: Matthew S. WHITTEN, Todd R. TAUBERT, Derek M. LARSEN, Korneel DE RUDDER, Mark Thomas BRANDL
  • Dosing conduit arrangements for exhaust aftertreatment system
    Patent number: 11840952
    Abstract: An aftertreatment device includes flow guides disposed within a dosing conduit. Exhaust enters through a perforated region of the dosing conduit and passes through the flow guides. The flow guides induce swirling or other turbulence to mix injected reactant with the exhaust gas. Various types of flow guides include cantilevered vanes, guide passageways, and louvered openings of a second conduit. Some types of flow guides induce localized mixing to inhibit deposit formation at the doser mounting unit. Other types of flow guides induce mixing downstream of the dosing conduit.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: December 12, 2023
    Assignee: Donaldson Company, Inc.
    Inventors: Matthew S. Whitten, Todd R. Taubert, Derek M. Larsen, Korneel De Rudder, Mark Thomas Brandl
  • DOSING CONDUIT ARRANGEMENTS FOR EXHAUST AFTERTREATMENT SYSTEM
    Publication number: 20220268192
    Abstract: An aftertreatment device includes flow guides disposed within a dosing conduit. Exhaust enters through a perforated region of the dosing conduit and passes through the flow guides. The flow guides induce swirling or other turbulence to mix injected reactant with the exhaust gas. Various types of flow guides include cantilevered vanes, guide passageways, and louvered openings of a second conduit. Some types of flow guides induce localized mixing to inhibit deposit formation at the doser mounting unit. Other types of flow guides induce mixing downstream of the dosing conduit.
    Type: Application
    Filed: June 30, 2020
    Publication date: August 25, 2022
    Applicant: Donaldson Company, Inc.
    Inventors: Matthew S. WHITTEN, Todd R. TAUBERT, Derek M. LARSEN, Korneel DE RUDDER, Mark Thomas BRANDL
  • RETENTION APPARTUS FOR WIRE MESH ARRANGEMENT
    Publication number: 20220235687
    Abstract: An exhaust treatment device includes a dosing and mixing assembly having a wire mesh puck. A retaining arrangement holds the mesh puck and maintains the mesh puck in an axially compressed state. The compressive force may be sufficient to inhibit rotation of the wire mesh. A peripheral side of the wire mesh is allowed to float while edges of the axial ends are trapped between at least two stop members of the retaining arrangement.
    Type: Application
    Filed: May 8, 2020
    Publication date: July 28, 2022
    Applicant: Donaldson Company, Inc.
    Inventors: Derek M. LARSEN, Todd R. TAUBERT, Nathaniel I. IVERSON, William J. BAIRD, Mark T. BRANDL, David D. ROWLEY