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4-Traders Homepage  >  Equities  >  Nasdaq  >  CLEARSIGN COMBUSTION CORP    CLIR

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05/12 CLEARSIGN COMBU : reports 1Q loss
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04/04 CLEARSIGN COMBU : Awarded Contract with Major Canadian Oil Producer
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CLEARSIGN COMBUSTION : Patent Issued for Method for Flame Location Transition from a Start-Up Location to a Perforated Flame Holder (USPTO 9388981)

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07/21/2016 | 08:45pm CEST

By a News Reporter-Staff News Editor at Journal of Engineering -- CLEARSIGN COMBUSTION CORPORATION (Seattle, WA) has been issued patent number 9388981, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventors are Karkow, Douglas W. (Des Moines, WA); Colannino, Joseph (Bellevue, WA); Krichtafovitch, Igor A. (Kirkland, WA); Wiklof, Christopher A. (Everett, WA).

This patent was filed on June 16, 2015 and was published online on July 12, 2016.

From the background information supplied by the inventors, news correspondents obtained the following quote: "Combustion systems are widely employed throughout society. There is a continual effort to improve the efficiency and reduce harmful emissions of combustion systems."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventors' summary information for this patent: "According to an embodiment, a combustion system is provided that includes a fuel nozzle configured to emit a diverging fuel flow, a perforated flame holder positioned in the path of the fuel flow and including a plurality of apertures extending therethrough. The combustion system also includes a preheater for preheating the perforated flame holder.

"According to an embodiment, a combustion system includes a fuel nozzle configured to emit a diverging fuel flow, a perforated flame holder including a plurality of apertures extending therethrough positioned in the path of the fuel flow, and a preheating means for preheating the perforated flame holder.

"According to an embodiment, the preheater and preheating means includes an electrically resistive element.

"According to respective embodiments, the preheater and the preheating means include electrically inductive elements.

"According to another embodiment, the preheater and preheating means includes a preheat nozzle configured to support a preheat flame in a position between the fuel nozzle and the flame holder.

"According to an embodiment, preheating means includes first and second electrodes configured to hold a preheat flame in the position between the primary nozzle and the flame holder.

"According to another embodiment, the preheating means includes a preheat flame holder configured to support a preheat flame in the diverging fuel flow in a position between the primary nozzle and the flame holder.

"According to an embodiment, a combustion system is provided, which includes a nozzle configured to emit a diverging fuel flow, a flame holder positioned in the path of the fuel flow and that includes a plurality of apertures extending therethrough. The combustion system also includes preheating means, for preheating the primary flame holder.

"According to an embodiment, a method of operation is provided, for operation of a flame holder. The method includes performing a burner startup procedure, including applying thermal energy to the flame holder, terminating the burner startup procedure after a temperature of a portion of the flame holder is above a startup temperature threshold, emitting a flow of fuel from a nozzle at an operational rate, and supporting a flame within a plurality of apertures extending through the flame holder. According to an embodiment, the applying thermal energy includes generating heat by applying an electrical potential across an electrically resistive element, and applying the heat to the flame holder.

"According to an embodiment, the performing a burner startup procedure further includes holding a flame supported by fuel emitted from the primary nozzle at a location between the primary nozzle and a side of the flame holder facing the primary nozzle.

"According to an embodiment, the performing a burner startup procedure includes holding the primary nozzle in a startup position and emitting a flow of fuel from the primary nozzle at a startup rate, the startup rate being sufficiently low as to enable a stable flame within the fuel flow. Additionally, the terminating the burner startup procedure includes moving the primary nozzle from the startup position to an operational position.

"According to an embodiment, the terminating the burner startup procedure includes reducing a concentration of oxygen in a flow of air."

For the URL and additional information on this patent, see: Karkow, Douglas W.; Colannino, Joseph; Krichtafovitch, Igor A.; Wiklof, Christopher A.. Method for Flame Location Transition from a Start-Up Location to a Perforated Flame Holder. U.S. Patent Number 9388981, filed June 16, 2015, and published online on July 12, 2016. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9388981.PN.&OS=PN/9388981RS=PN/9388981

Keywords for this news article include: CLEARSIGN COMBUSTION CORPORATION.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2016, NewsRx LLC

(c) 2016 NewsRx LLC, source Science Newsletters

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Managers
NameTitle
Stephen E. Pirnat Chairman, President & Chief Executive Officer
Roberto Ruiz Chief Operating Officer
James N. Harmon Chief Financial Officer, Secretary & Treasurer
Joseph Colannino Chief Technology Officer
Lon E. Bell Independent Director
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