Patent ID: 6883488

Claim:
A rotary combustion engine, comprising: a non-rotary outer casing, a non-rotary inner casing, a power shaft arranged inside the non-rotary inner casing and provided with an eccentric element, a first eccentric ring between the non-rotary outer casing and the non-rotary inner casing, a second eccentric ring mounted in bearings around the eccentric element of the power shaft and arranged to operate coaxially with the first eccentric ring, a combustion chamber arrangement for burning a mixture of fuel and air supplied into the engine, characterized in that the first and the second eccentric rings are fixedly connected together by an end ring, the combustion chamber arrangement for the suction, compression, combustion and exhaust phases of the fuel mixture is located between the first eccentric ring and the non-rotary inner casing, the first eccentric ring driving the power shaft via the second eccentric ring, and that the eccentric ring arrangement is a substantially non-rotary unit that only performs an eccentric motion, which makes the power shaft rotate.