US Patent Issued to FIRE CHIEF INDUSTRIES on June 30 for "Furnace" (Missouri Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,266, issued on June 30, was assigned to FIRE CHIEF INDUSTRIES LLC (St. Louis).

"Furnace" was invented by Danny N. Haynes (Byrnes Mill, Mo.) and Gregory A. Miller (Chesterfield, Mo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A furnace including a combustion chamber for burning fuel can have increased fuel burning efficiency, increased heating efficiency, and decreased harmful emissions of combustion byproducts. A combustion air delivery system delivers primary and secondary combustion air to the combustion chamber. Primary and secondary combustion air may be delivered at amounts that increase burning efficiency. An amount of secondary combustion ...