Abstract: A grooved double combustion chamber rotary engine includes a rotary compression unit, a rotary gas motor unit, and a combustion chamber, the rotary compression unit being connected to the respective rotary gas motor unit and the combustion chamber to constitute a stroke, and two strokes being alternating to achieve power output.

Abstract: A high compression ratio and mechanical efficiency are realized by a rotary power generating device having a cylindrical ring secured between a pair of cylindrical casings. A rotor assembly is disposed within the internal chamber defined by the ring and casings and includes a pair of shafts which extend outwardly through eccentric holes formed in the casings. The assembly further includes a pair of collars engaged within arcuate-shaped recesses formed in the internal walls of the casings and a longitudinal slot through which a blade is slidably received to define three closed areas within the internal chamber.

Abstract: An engine having one stage of combustion between a rotary compressor and a rotary motor, and another stage of combustion within the motor, includes compressor and motor vane rotors that rotate in respective housing portions on a common drive shaft; first and second transfer passages fluid connected between respective exhaust ports of the compressor and intake ports of the motor, first and second combustion chambers being formed within the respective transfer passages, the combustion chambers being periodically sequentially pressurized by gas flow from the compressor exhaust ports. First and third cam-actuated poppet valves in the first and second transfer passages prevent upstream gas flow from the respective combustion chambers into the compressor. Second and fourth cam-actuated poppet valves in the first and second transfer passages prevent upstream gas flow from the motor into the respective combustion chambers.