Patents by Inventor Jeff Lewallen

Jeff Lewallen 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).

  • Process burner with distal flame holder
    Patent number: 12716582
    Abstract: According to an embodiment, a burner system provides a flow of premixed fuel and flue gas, and combustion airflow is provided at an intended distal flame front position. The burner system may include a pilot burner. A burner system may include a pre-mix pilot burner. In an embodiment a main fuel may include a high hydrogen content.
    Type: Grant
    Filed: September 11, 2023
    Date of Patent: August 25, 2026
    Inventors: Venkatesh Iyer, Jeff Lewallen, Colin James Deller
  • Burner system with discrete transverse flame stabilizers
    Patent number: 12359804
    Abstract: A combustion system includes a fuel and oxidant source and a flame holder. The flame holder includes a plurality of discrete slats arranged in parallel defining combustion channels between adjacent slats. Pairs of adjacent slats may be oriented to operate substantially as a V-gutter. The fuel and oxidant source outputs fuel and oxidant into the combustion channels. The flame holder holds a combustion reaction of the fuel and oxidant in the combustion channels.
    Type: Grant
    Filed: September 2, 2022
    Date of Patent: July 15, 2025
    Assignee: ClearSign Technologies Corporation
    Inventors: Venkatesh Iyer, Colin James Deller, Jeff Lewallen, Donald Kendrick, James K. Dansie, Douglas W. Karkow
  • PROCESS BURNER WITH DISTAL FLAME HOLDER
    Publication number: 20240110699
    Abstract: According to an embodiment, a burner system provides a flow of premixed fuel and flue gas, and combustion airflow is provided at an intended distal flame front position. The burner system may include a pilot burner. A burner system may include a pre-mix pilot burner. In an embodiment a main fuel may include a high hydrogen content.
    Type: Application
    Filed: September 11, 2023
    Publication date: April 4, 2024
    Inventors: Venkatesh Iyer, Jeff Lewallen, Colin James Deller
  • BURNER SYSTEM WITH DISCRETE TRANSVERSE FLAME STABILIZERS
    Publication number: 20230072921
    Abstract: A combustion system includes a fuel and oxidant source and a flame holder. The flame holder includes a plurality of discrete slats arranged in parallel defining combustion channels between adjacent slats. Pairs of adjacent slats may be oriented to operate substantially as a V-gutter. The fuel and oxidant source outputs fuel and oxidant into the combustion channels. The flame holder holds a combustion reaction of the fuel and oxidant in the combustion channels.
    Type: Application
    Filed: September 2, 2022
    Publication date: March 9, 2023
    Inventors: VENKATESH IYER, COLIN JAMES DELLER, JEFF LEWALLEN, DONALD KENDRICK, JAMES K. DANSIE, DOUGLAS W. KARKOW, CHRISTOPHER A. WIKLOF
  • PILOT STABILIZED BURNER
    Publication number: 20220205633
    Abstract: According to an embodiment, a burner system includes a pilot burner disposed in a furnace at a distal position along a main fuel and combustion air flow axis, and one or more main fuel nozzles disposed at a proximal position along the main fuel and combustion air flow axis. The pilot burner is configured to support a pilot flame and the one or more main fuel nozzles are configured to support a main flame in contact with the pilot flame. The pilot burner is disposed to cause the main fuel and combustion air to be ignited by the pilot flame. The pilot burner may support a diffusion pilot flame or may include a premixing apparatus to support a pre-mixed flame.
    Type: Application
    Filed: November 8, 2021
    Publication date: June 30, 2022
    Inventors: COLIN JAMES DELLER, Donald Kendrick, Venkatesh Iyer, Jeff Lewallen