ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,703, issued on March 31, was assigned to MAXITROL GMBH & Co. KG (Thale, Germany).
"Electronic closed-loop control device for fireplaces comprising a lower combustion system" was invented by Peter Keil (Thale, Germany) and Sven Malecha (Thale, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The aim is to create a facility which is carried out without operator intervention, operates without delay, does not require a connection to the mains and meets the requirements of the regulations on permissible pollutant emissions. The device consists of a control unit which is electrically connected to two temperature sensors and a door contact switch an...