Communicating fluid vessel engine systems

An engine system with communicating fluid vessels, the engine system comprising:

• an output shaft;
• and
• two or more engines that each comprise:
• a first fluid container containing a fluid;
• a second fluid container containing the fluid;
• a third fluid container containing the fluid;
• at least one interconnecting lever conduit containing the fluid and rotatably coupled to the first, second, and third fluid containers, the at least one interconnecting lever conduit defining a fluid passageway by which the first, second, and third fluid containers are in fluid communication, and wherein the at least one interconnecting lever conduit is pivotal about an axis;
• at least one buoyant member positioned in each of the first and third fluid containers;
• a holding tank positioned in each of the first and third fluid containers and connected to the at least one buoyant member, the holding tank having:
• (i) a lower portion configured to allow the fluid to pass into and out of an interior of the holding tank and (ii) an upper portion that is fluidly sealed;
• a tether physically linking together the holding tank of each of the first and third fluid containers;
• and
• a supply of a gas that is in fluid communication with the interior of at least one of the holding tanks in the first or third fluid containers, wherein supplying the gas to the interior of the at least one of the holding tanks displaces at least some of the fluid from the interior of the at least one of the holding tanks to increase a column height of the fluid in each of the first, second, and third fluid containers
• wherein the two or more engines are each coupled to and drive rotations of the output shaft.

A method using an engine system with communicating fluid vessels, the method comprising:

• providing at least one interconnecting lever conduit containing a liquid fluid and rotatably coupled to a first fluid container containing the liquid fluid, a second fluid container containing the liquid fluid, and a third fluid container containing the liquid fluid, the at least one interconnecting lever conduit defining a liquid fluid passageway by which the first, second, and third fluid containers are in liquid fluid communication, and wherein the at least one interconnecting lever conduit is pivotal about an axis;
• changing a rotational balance of the at least one interconnecting lever conduit and the first, second, and third fluid containers by changing a pressure of the liquid fluid within at least one of the first or third fluid containers;
• transferring, through the liquid fluid passageway of the at least one interconnecting lever conduit, a portion of the liquid fluid from the first or third fluid containers to the second fluid container, thereby changing a mass of liquid fluid within the second fluid container;
• and
• rotating the at least one interconnecting lever conduit around the axis by an increase of torque exerted on the at least one interconnecting lever conduit by the second fluid container.