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More Perpetual Motion Patents

This is an update to my earlier post, Patented Improvements in Perpetual Motion. There have been several more patents issuing on inventions that are or seem to be impossible machines that promise to harness the “magical” lifting power of buoyancy so that the output energy exceeds the input energy. Here are three more:
Tran U.S. Pat. 8,453,442, “Underwater Air Power Generator”, issued June 4, 2013. This machine uses a chain, submerged in water, that moves in a loop around upper and lower sprocket wheels, and carries a number of containers (i.e., buckets) distributed along the chain. This arrangement looks suspiciously like the impossible machine of the Diamond U.S. Pat. 3,934,964 that I discussed in the earlier post. A compressor supplies compressed air bubbles on one side of the loop where the containers have their open ends downward, and the air bubbles rise and lift the containers and chain with them. At the top, the containers are inverted as they pass over the upper sprocket wheel, discharging the air bubbles, so the containers on that side of the loop will descend. Strictly speaking, this is not a perpetual motion machine, unless for some reason we don’t have to account the energy it takes to provide the bubbles of compressed air. As a means of transforming the compressed air energy into rotational energy, this would not be particularly efficient. As compared with air motors or air turbines, this scheme is too complex and too inefficient to be of much value. But this is not to say it has no utility – It could, for example, be used in a tropical fish tank as a means for entertaining the fish.

Pedziwatr U.S. Pat. 8,646,267, “Buoyant Force Power Generation,” issued February 11, 2014. This machine involves an underwater rotor (or wheel) with air bags distributed around its rim. A lobed wheel at the top compresses the bags when they rotate to the top to transfer their air to the bags opposite (at the bottom), so that buoyant forces cause the rotor to turn. This machine requires a solar-powered motor to drive the lobed wheel, so all the energy is actually coming from the solar-powered motor. This raises the question then, why bother with all that intermediary equipment – rotor, air bags, lobed wheel, and water tank – and not just tap directly onto the shaft of the solar-powered motor?

Propp U.S. Pat. 8,713,933, “Apparatus and Process for Recovering Energy from Bouyancy” [sic.], issued May 6, 2014, and is assigned to Buoyant Energy LLC. In this patented scheme, a vessel or tank is submerged in water and is connected to a piston in a cylinder above the water’s surface. The piston supposedly compresses air that is then supplied to the vessel to make it buoyant so it can rise. At the top of the up-stroke, the vessel releases the gas, causing the moving vessel to sink. Then compressed gas is channeled from the cylinder to a “charging valve” while the vessel is sinking, and the charging valve releases gas into the vessel at the bottom of the down-stroke so it will rise again. The stated object of this patented device is to use buoyant force as an alternative energy source.

The need for new and improved buoyancy and gravity powered machines appears to be insatiable, and many of them are receiving patents, apparently because the United States Patent and Trademark Offices sees them as advancing the progress of science and the useful arts. Perhaps amusement is a useful art, as these patents do have some value in that direction.