Patent ID: 8006493

Claim:
A heat engine comprising: a closed hollow cylinder, which is divided in to eight identical hollow L shape wings by eight identical hollow heat isolating dividers, half filled with working liquid, and placed so that its axis is parallel to the ground of the earth; a cooler for absorbing any heat transferred to the upper left side of the above cylinder from the outside environment; a heat isolating enclosure for enclosing the above cylinder, isolating the above cylinder from the heat in the outside environment, and permitting heat source liquid running through the lower right side of the above cylinder for maximizing amount of heat to transfer from heat source liquid to the working liquid and its vapor in the lower right side of the cylinder while minimizing the amount of heat transfer to the left side of the cylinder, the lower right side of the cylinder allows working liquid in the lower right side of the cylinder to boil to vapor and keeps the vapor on the right side; the cylinder allows the vapor on the right side to have enough pressure before pushing the remaining working liquid to the left side and compress the vapor in the upper left side back to working liquid; the buoyant and gravitational forces of the cylinder rotate the cylinder to produce power; an outlet for discharging lower temperature heat source liquid out of the enclosure.