ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,379,127, issued on Aug. 5, was assigned to Heatcraft Refrigeration Products LLC (Stone Mountain, Ga.).

"Air intake and discharge sealing structures for evaporator units" was invented by Karthick Kuppusamy (Salem, India) and Vinothraj Thangarathinam (Chennai, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "A controller is configured to operate a heating, ventilation, and air conditioning (HVAC) system and to actuate sealing structures coupled to an evaporator unit, wherein the sealing structures are configured to prevent airflow from interacting with an evaporator coil during a defrost cycle. The controller is configured to determine if the HVAC syst...