ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,096, issued on March 18, was assigned to Greenheck Fan Corp. (Schofield, Wis.).
"Fan assembly" was invented by Vijaya K. Kollipara (Weston, Wis.), Thomas Frank (Scholfield, Wis.), Shamus Doran (Kronenwetter, Wis.) and Shawn Michael Koeppel (Kronenwetter, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fan assembly configured to address expansion losses and associated noises in centrifugal fans modifies the blades and housing to enhance the efficiency of air flow. The fan assembly can include a centrifugal fan wheel and shaped housing incorporating curved walls that guide the airflow along an efficient path, minimizing abrupt directional chang...