Abstract: A rotary engine includes an outer body arranged to rotate on a stationary member, the outer body having an eccentric circular cavity cooperating with radial vanes from the stationary body which sequentially reciprocate so that a series of volumes sequentially increase and decrease in size. Ammonia gas under pressure is introduced on one side of the vanes and when the volumes containing the gas pass their maximum value and start to decrease, water is injected which is immediately absorbed in the ammonia gas to create a vacuum. As a consequence, a push-pull action is provided in each volume to rotate the outer member about the stationary member. A tire may be held on the outer member to provide a vehicle wheel which serves simultaneously as a rolling support and a driving engine for the vehicle.

Abstract: A variable volume chamber such as defined by a cylinder and piston has closed circuit connections to a given gas and a given liquid for which the gas has a chemical affinity when in physical contact therewith. By bringing the liquid and gas together in the confines of the closed chamber, the rapid absorption of the gas creates a vacuum or implosion effect which results in the piston being driven by the pressure differential further into the cylinder. The same process can be used to drive a rotary engine, there being required no heat, ignition system, or exhaust to the atmosphere of gas.