ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,929, issued on Jan. 27, was assigned to KOKIDO DEVELOPMENT Ltd. (Kowloon, Hong Kong).
"Autonomous impeller vacuum cleaner for cleaning swimming pools" was invented by Jean Bruneel (Kowloon, Hong Kong) and Max Roumagnac (Martignas sur Jalle, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A submersible vacuum cleaner to clean artificial pools, such as swimming pools. A suction head connected to a suction duct leading into a filter bag. A motor coupled to an impeller located within the suction duct. The spinning of the impeller producing a suction. A battery powering the motor. The motor and the battery being placed in a watertight compartment, ...