ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,886, issued on May 20, was assigned to Rheem Manufacturing Co. (Atlanta).

"Heating systems with unhoused centrifugal fan and wraparound heat exchanger" was invented by Robert L. Long (Fort Smith, Ark.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heating system with wraparound heat exchanger is disclosed. The system includes a centrifugal fan that expels air radially into a plenum space. A heat exchanger tube is placed in the plenum space, thereby heating the air in the plenum space before it exits an assembly cabinet. The heat exchanger tube can have various configurations, including non-horizontal configurations so as to allow condensate to dra...