ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,066, issued on July 29.

"Communicating fluid vessel engine systems" was invented by James D. Rudd (Key Largo, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An engine system includes three communicating fluid vessels that each contain a fluid. A first interconnecting fluid conduit containing the fluid rotatably couples the second fluid vessel to the first fluid vessel and acts as a lever. A second interconnecting fluid conduit containing the fluid rotatably couples the third fluid vessel to the first fluid vessel and acts as another lever. By increasing the fluid column heights in the communicating fluid vessels, torque is applied to the levers...