Patent ID: 9334795
Filing Date: 2016-05-10
CPC Classification: F02B

Claim Text:
1. A stator for a rotary internal combustion engine, the stator comprising: a body having two axially spaced apart end walls and a peripheral wall extending between the end walls, with inner surfaces of the end walls and of the peripheral wall enclosing an internal cavity configured for receiving a rotor of the rotary internal combustion engine, the body further having an axial central bore defined therethrough and through the end walls, the central bore configured for receiving a shaft of the rotor, each end wall having a scavenging cavity defined therein in fluid communication with the internal cavity through a respective scavenging opening extending through the inner surface thereof, each of the end walls having at least one annular oil seal groove defined in the inner surface thereof concentric with the central bore and located radially outwardly of the scavenging opening with respect to the axial central bore; and at least one annular oil seal received in each groove and protruding from the end wall into the internal cavity, each seal being biased axially away from the end wall.