Patent ID: 7428885

Claim:
A rotary internal combustion engine comprising: a casing; associated cylinders; a first set of pistons operatively connected to a first piston plate and disposed in said associated cylinders for reciprocal motion; a second set of pistons operatively connected to a second piston plate and disposed in said associated cylinders for reciprocal motion; an undulating ramp to provide undulating motion to said first and second piston plates to convert and down motion of said first and second set of pistons to rotary motion; first and second engine drive shafts positioned on opposite ends of said casing, respectively; a first output block rotatably supported in said casing and providing a first rotary output through the top end of said casing in response to the reciprocal motion of said first set of pistons converted to rotary motion, said first rotary output being fed to said first engine shaft; and a second output block attached to said first output block and thereby rotatably supported in said casing and providing a second rotary output through the bottom end of said casing in response to the reciprocal motion of said second set of pistons converted to rotary motion, the second rotary output being fed to said second engine drive shaft.