Rotary engine with arcuate sealing vanes

A rotary internal combustion engine comprising a casing defining an oval working chamber, a rotor mounted in the chamber for simple rotation about the chamber axis and resilient sealing means on the rotor to cooperate with the curved chamber wall to provide suction through an inlet port in the casing, compression and expansion, and exhaustion through an outlet port in the casing during rotation of the rotor, in which the sealing means include first arcuate sealing means mounted in the rotor to contact the curved chamber wall surface and second arcuate sealing means recessed into the first arcuate sealing means and projecting through groove means in each end face of the rotor to contact the chamber end wall surface, the first sealing means including a pair of first arcuate sealing members which are spring urged apart from one another into respective contact with the curved chamber wall surface on opposite sides of the rotor and the second sealing means including a second arcuate sealing member on each arcuate face of each first sealing member with the second arcuate sealing members of each adjacent pair also being spring urged apart from one another into into respective contact with the curved chamber wall surface on-opposite sides of the rotor.