ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,899, issued on Aug. 26, was assigned to Wirth Doors Ltd. (Bicester, Great Britain).
"Active airflow inhibiting apparatus" was invented by Nicholas Wirth (Northamptonshire, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "An active airflow inhibiting apparatus for an entranceway comprises: a structure positioned adjacent an entranceway of a building and defines a passage therethrough for accessing the entranceway. The structure defines at least one plenum chamber and first and second outlet slots fluidically coupled to the plenum chamber. A fan fluidically connected to the plenum chamber supplies an airflow to the plenum chamber in order ...