Gear-type rotary engine

Claim 1

A rotary internal combustion engine comprising a. a rotary compression chamber having a gas intake port and formed by two longitudinally parallel, partially overlapping hollow cylinders of different radii, both arcuate cylinder walls of which are circumferentially in gas communication with essentially only said gas intake port; b. a rotary combustion chamber having a gas exhaust port and formed by two longitudinally parallel partially overlapping hollow cylinders of different radii, the axes of which cylinders are in longitudinal alignment with corresponding hollow cylinders in said rotary compression chamber, and both arcuate cylinder walls of which are circumferentially in gas communication with essentially only said gas exhaust port; c. partition means longitudinally separating and thermally insulating said compression chamber from said combustion chamber, said partition means containing an ignition chamber which is offset from a plane common to said cylinder axes on the same side thereof as said gas intake port and adjacent to and axially communicating with said combustion cylinder; d. a compressed gas conduit extending within said partition means from said ignition chamber to a compressed gas inlet offset from said plane on the opposite side thereof from said gas intake port adjacent to and axially communicating with said compression chamber at a point where the two bases of said hollow cylinders forming said combustion chamber overlap; e. a combustion gas conduit extending within said partition means from said ignition chamber to a combustion gas outlet offset to the side of said plane opposite said gas exhaust port and axially communicating with said combustion chamber at a point where the two bases of said hollow cylinders forming said combustion chamber overlap; f. conveX rotors rotatably mounted on a common shaft in the larger hollow cylinders of said compression chamber and said combustion chamber, said convex rotors having along the axial length thereof a set of semicircular protuberances at the poles and a first set of sprocket teeth along the remainder of the periphery thereof; g. concave rotors rotatably mounted on a second common shaft in the smaller hollow cylinders of said compression chamber and said combustion chamber, said concave rotors having along the axial length thereof a set of semicircular indentations at the poles and a second set of sprocket teeth along the remainder of the periphery thereof which sealingly engage corresponding protuberances and sprocket teeth on said convex rotors; h. a matching pair of prime gears secured to one end of said rotor shafts; and i. a pair of flywheels secured to the other end of said rotor shafts.