Hydraulic motor

Claim 1

IN A HYDRAULIC MOTOR A HOLLOW STATOR HAVING AN INTERNAL PERIPHERAL WALL, A ROTOR ROTATABLY POSITIONED IN THE STATOR AND HAVING AN EXTERNAL PERIPHERAL WALL LOCATED IN RADIALLY INWARDLY SPACED RELATION TO SAID INTERNAL WALL, PERIPHERALLY SPACED, RADIALLY EXTENDING, EXTERNAL RECESSES IN THE ROTOR, A VANE MOVABLY DISPOSED IN EACH RECESS AND EXTENDING RADIALLY OUTWARDLY FROM THE STATOR IN SEALING CONTACT WITH THE ROTOR AND STATOR AND WITH SAID INTERNAL WALL TO FORM A SEAL BETWEEN THE WALLS, EACH OF SAID VANES HAVING RADIALLY SPACED, RADIALLY INWARDLY FACING SURFACES IN THE RECESS, INLET MEANS FOR ADMITTING FLUID UNDER PRESSURE INTO THE STATOR BETWEEN SAID WALLS AT ONE LOCATION AND OUTLET MEANS FOR ALLOWING AN OUTFLOW OF FLUID FROM THE STATOR BETWEEN SAID WALLS AT ANOTHER LOCATION TO APPLY A FORCE TO ONE SIDE OF EACH VANE WHEN THE VANE IS BETWEEN THE INLET AND OUTLET MEANS TO CAUSE THE RATOR TO ROTATE, EACH OF SAID VANES HAVING A PASSAGEWAY WHOSE INNER END OPENS INTO THE RECESS THROUGH ONE OF SAID FACES AND WHOSE OUTER END OPENS INTO THE STATOR BETWEEN SAID WALLS AT ONE SIDE OF THE VANE AND ANOTHER PASSAGEWAY WHOSE INNER END OPENS INTO THE RECESS THROUGH THE OTHER OF SAID FACES AND WHOSE OUTER END OPENS INTO THE STATOR BETWEEN SAID WALLS AT THE SIDE OF THE VANE, A VALVE FOR CONTROLLING THE FLOW OF FLUID THROUGH EACH PASSAGEWAY TO ALLOW AN INFLOW OF FLUID INTO THE RECESS AND TO PREVENT THE OUTFLOW OF FLUID THEREFROM, AND MEANS FOR ADMITTING FLUID UNDER PRESSURE FROM SAID INLET MEANS INTO THE RECESS RADIALLY INWARDLY OF SAID FACES DURING THE APPLICATION OF SUCH FORCE TO THE VANE.