Patent ID: 7814872

Claim:
An engine having an output shaft for providing rotary motion, the engine comprising: first and second mounting plates; a camwheel rotatably mounted to the output shaft for supplying rotary motion thereto, the camwheel being disposed between the first and second mounting plates; a plurality of lobes integrally formed on the camwheel, the plurality of lobes defining a guiderail including a continuously, substantially sinusoidal surface biased for rotation in a direction of the rotary motion; a plurality of cylinders straddling the guiderail, the plurality of cylinders being interposingly coupled between the first and second mounting plates in a static circular plane about the primary camwheel such that a radius of the circular plane and the camwheel are coplanar; and a corresponding plurality of pistons disposed within each of the plurality of cylinders, each of the corresponding plurality of pistons including a connecting shaft for coupling a drive bearing thereto, the drive bearing for engaging and maintaining contact with the guiderail, wherein the rotary motion is obtained by transferring displacement of the plurality of pistons from respective top dead center positions and bottom dead center positions to the guiderail, thereby rotating the camwheel.