ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,554, issued on Sept. 8.
"Underwater cleaner" was invented by Andres Frankel (Perchtoldsdorf, Austria), Benjamin Frankel (Perchtoldsdorf, Austria) and Constantin Frankel (Perchtoldsdorf, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an underwater cleaner, in particular for a swimming pool, with a housing in which in particular a battery-powered pump with an electric motor and an impeller rotatable about an impeller axis of rotation is arranged, with a suction nozzle-defining a suction plane-formed by the housing, and a flow channel which is arranged in the housing and accommodates the impeller, is designed to be incl...