Patent ID: 8539930

Claim:
A device for combusting a mixture, comprising: a case having at least one internal combustion chamber that includes at least one non-circular, constant-diameter circumscribing wall, at least one intake valve port, and at least one exhaust valve port; a shaft extending into the combustion chamber and structured to be rotatable about a longitudinal axis of the shaft; and a rotor slidably mounted on the shaft and structured for translational movement to slide along an axis that is substantially perpendicular to the axis of rotation of the shaft as the rotor rotates within the combustion chamber to compress a mixture in the chamber; and the case having at least one further chamber that includes at least one further non-circular, constant-diameter circumscribing wall, at least one intake valve port, and at least one exhaust valve port, the shaft extending into the further chamber, and including a further rotor slidably mounted on the shaft for translational movement to slide along an axis that is substantially perpendicular to the axis of rotation of the shaft as the further rotor rotates within the further chamber, the further rotor in fluid communication with the exhaust valve port of the combustion chamber and structured to be driven by exhaust from the combustion chamber to mix the mixture in the further chamber prior to introduction of the mixture into the combustion chamber, wherein the rotor and the further rotor each have an elongate body having opposing first and second ends that are in contact with the circumscribing wall of the corresponding chamber and further chamber, respectively, when mounted on the shaft, each rotor body further comprising an elongate opening sized to be received over the shaft, and wherein the shaft comprises a mounting portion structured to engage the rotor body through the elongate opening and structured to prevent relative rotation of the shaft and the rotor body while permitting translational movement of the rotor body relative to the shaft.