Sealing and stop means for fluid motors

Claim 1

IN AN OSCILLATING FLUID MOTOR HAVING A BODY MEMBER, A HEAD MEMBER ON EACH END OF SAID BODY MEMBER, A STATOR AND A ROTOR IN SAID BODY MEMBER, SAID ROTOR INCLUDING A SHAFT HAVING AN ENLARGED PORTION CARRYING A VANE AND AN OUTPUT END PORTION EXTENDED OUTWARDLY THROUGH A SHAFT BORE IN ONE OF THE HEAD MEMBERS, THE COMBINATION COMPRISING: (A) A COMPRESSIBLE OUTER SEALING RING IN A RECESS IN SAID ONE HEAD MEMBER ON THE INNER SIDE THEREOF, AROUND THE SHAFT OUTPUT END, SAID RECESS BEING FORMED AROUND THE INNER END OF SAID SHAFT BORE AND COMMUNICATING WITH THE SAME, (B) AN INNER PLASTIC SEALING RING IN SAID RECESS DISPOSED AGAINST THE INNER SIDE OF SAID OUTER SEALING RING AND BIASED BY THE SAME INTO SEALING ENGAGEMENT WITH THE PERIPHERAL EDGE OF THE END OF THE ENLARGED SHAFT PORTION; AND, (C) A SLEEVE BEARING MOUNTED IN SAID RECESS AGAINST THE ENLARGED PORTION OF SAID SHAFT AND BETWEEN THE ROTOR SHAFT AND BOTH OF SAID SEALING RINGS.