Patents by Inventor Bruce A. Wartluft

Bruce A. Wartluft 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).

  • Three stage low NOburner system with controlled stage air separation
    Patent number: 8485813
    Abstract: A low NOx burner system is disclosed that reduces the emission of CO and HC during cold furnace startups, minimizes NOx formation with preheated air, and provides a flat stable flame due to burner design improvements including three stage combustion. The burner system is designed to operate in either a low or high temperature mode by controlling the amount of combustion air provided to stage 1 and stage 2 combustion. The burner system is designed to heat the interior of a furnace for high-temperature combustion/furnace processes, such as aluminum melting and steel processes. The burner system can also be used for low temperature processes at temperatures below the auto-ignition temperature of the fuel and still produce very low CO, HC and NOx emissions.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: July 16, 2013
    Assignee: Hauck Manufacturing Company
    Inventors: James J. Feese, Bruce A. Wartluft
  • Premix lean burner
    Patent number: 8113821
    Abstract: A burner assembly for lean, low NOx combustion may include a gaseous fuel manifold, counter-swirl vanes, and a converging nozzle with bluff body flame anchors. A cooling air tube optionally extends from the air inlet to the nozzle.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: February 14, 2012
    Assignee: Hauck Manufacturing Company
    Inventors: James J. Feese, Bruce A. Wartluft, Jacob W. Mattern
  • PREMIX LEAN BURNER
    Publication number: 20090226852
    Abstract: A burner assembly for lean, low NOx combustion may include a gaseous fuel manifold, counter-swirl vanes, and a converging nozzle with bluff body flame anchors. A cooling air tube optionally extends from the air inlet to the nozzle.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 10, 2009
    Inventors: James J. Feese, Bruce A. Wartluft, Jacob W. Mattern
  • Three Stage Low NOx Burner System With Controlled Stage Air Separation
    Publication number: 20090181333
    Abstract: A low NOx burner system is disclosed that reduces the emission of CO and HC during cold furnace startups, minimizes NOx formation with preheated air, and provides a flat stable flame due to burner design improvements including three stage combustion. The burner system is designed to operate in either a low or high temperature mode by controlling the amount of combustion air provided to stage 1 and stage 2 combustion. The burner system is designed to heat the interior of a furnace for high-temperature combustion/furnace processes, such as aluminum melting and steel processes. The burner system can also be used for low temperature processes at temperatures below the auto-ignition temperature of the fuel and still produce very low CO, HC and NOx emissions.
    Type: Application
    Filed: January 11, 2008
    Publication date: July 16, 2009
    Inventors: James J. FEESE, Bruce A. WARTLUFT
  • Three stage low NOburner and method
    Patent number: 7163392
    Abstract: The present invention is an air-staged low NOx burner for firing a gaseous fuel. The burner fires three stages, with the first stage of combustion taking place substantially within a burner cup section of a refractory baffle, the second stage of combustion taking place adjacent to the baffle and downstream of the baffle, and the third stage of combustion within a furnace. The flow of main combustion air adjacent to the baffle creates a negative pressure zone adjacent to the baffle. The present invention is also a method for low NOx staged combustion.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: January 16, 2007
    Inventors: James J. Feese, Bruce A. Wartluft