ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,493, issued on Dec. 23, was assigned to INVOX BELGIUM NV (Diepenbeek, Belgium).

"Blocking device" was invented by Frank Bartels (Hattingen, Germany) and Juergen Rawert (Cologne, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The inhalation device for medically active liquids (F) for generation of an aerosol comprises a housing (1), a reservoir (2), a pumping device with a pumping chamber (3), and a nozzle (6), wherein the interior volume of the pumping chamber (3) is changeable by means of linear relative motion of the pumping chamber to the riser pipe (5). Said linear relative motion can be effected by a relative rotation of a rotatable par...