Oscillating hydraulic motor having compressible sealing means

Claim 1

AN OSCILLATING FLUID MOTOR OF THE CLASS DESCRIBED, COMPRISING: A HOLLOW CYLINDRICAL BODY; A HEAD MEMBER FIXEDLY MOUNTED ON EACH END OF SAID BODY FOR ENCLOSING THE SAME; A LONGITUDINALLY EXTENDED SLOT FORMED IN THE INNER SURFACE OF SAID CYLINDRICAL BODY; A RADIALLY DISPOSED LONGITUDINAL STATOR FIXEDLY MOUNTED IN SAID SLOT AND EXTENDING FROM ONE HEAD MEMBER TO THE OTHER HEAD MEMBER; A SHAFT IN SAID BODY EXTENDING AXIALLY THERETHROUGH AND BEING ROTATABLY MOUNTED IN BEARING MEMBERS MOUNTED IN SAID HEAD MEMBERS; A U-SHAPED SEAL MOUNTED ON SAID STATOR AND ADAPTED TO ENGAGE SAID HEAD MEMBERS AND SAID ROTATABLE SHAFT; A RADIALLY DISPOSED LONGITUDINAL VANE FIXEDLY MOUNTED ON SAID SHAFT AND EXTENDING FROM ONE HEAD MEMBER TO THE OTHER HEAD MEMBER; A U-SHAPED SEAL MOUNTED ON SAID VANE AND ADAPTED TO ENGAGE SAID HEAD MEMBERS AND THE INNER SURFACE OF SAID BODY; AN OUTPUT SHAFT CONNECTED TO SAID SHAFT AND EXTENDED OUTWARDLY OF SAID BODY; A PAIR OF ANNULAR SHAFT SEAL MEMBERS MOUNTED IN EACH OF SAID HEAD MEMBERS ON OPPOSITE SIDES OF THE SHAFT BEARING MEMBER; ONE SEAL OF EACH PAIR OF SAID ANNULAR SHAFT SEAL MEMBERS BEING ADAPTED TO OPERATIVELY ENGAGE A SHOULDER ON SAID FIRST NAMED SHAFT AND BEING PROVIDED WITH A PERIPHERAL GROOVE AND BEING CARRIED ON A SLEEVE BEARING WHICH IS ADAPTED TO OPERATIVELY ENGAGE SAID FIRST NAMED SHAFT; AND, MEANS FOR ADMITTING FLUID UNDER PRESSURE SUCCESSIVELY AND SELECTIVELY TO ALTERNATE SIDES OF SAID STATOR FOR ACTUATING SAID VANE THROUGH A RECIPROCATORY CYCLE.