Patent ID: 7421986

Claim:
A Rotary Radial Internal Combustion Piston Engine comprises a housing ( 1 ), a rotor ( 3 ) having a driven shaft ( 4 ) fastened thereon, a first set of bearings ( 2 ), wherein said driven shaft ( 4 ) mounted on, spaced coaxially apart on the opposite sides of said housing ( 1 ) for rotation about an axis of said rotor ( 3 ), a rotary ring ( 5 ), a second set of bearings ( 6 ) wherein said rotary ring ( 5 ) mounted on, spaced coaxially apart on the opposite sides of said housing ( 1 ) for rotation around an axis of said rotary ring ( 5 ) being parallel and spaced apart from axis of said rotor ( 3 ), a pair radially opposite cylinders ( 7 ) spaced in the body of the rotor ( 3 ) eccentrically and equidistantly relative to said rotation axis of said rotor ( 3 ), a piston ( 8 ) spaced in each of said cylinders for displacement along the respective cylinder axes, wherein said piston ( 8 ) is connected respectively to said rotary ring ( 5 ) by connecting rods ( 10 ), an intake duct being at an outer end of said driven shaft ( 4 ) and an exhaust duct being at an opposite outer end of said driven shaft ( 4 ), an inner pipe connecting said intake duct to said cylinders ( 7 ) and said cylinders ( 7 ) to said exhaust duct, and pins ( 9 ); wherein said rotary ring ( 5 ) is eccentrically relative to the rotation axis of said rotor ( 3 ), and is impelled to rotate in the same direction and at the same velocity relative to said rotor by the direct mechanical connection between said rotor and said rotary ring by said pins ( 9 ) of said rotor.