Jean-Louis writes – “The Lifter works without moving parts, flies silently, uses only electrical energy and is able to lift its own weight plus an additional payload. The Lifter uses the Biefeld-Brown effect discovered by Thomas Townsend Brown in 1928. The basic design of the Lifter has been fully described in the Townsend Brown US Patent filed on Aug 16, 1960 and titled “Elektrokinetic Apparatus”, you will find in this patent the full description of the main principle used in the Lifter devices.” Thanks Sylvian! – Link.