Air motors

Claim 1

AN AIR MOTOR OF THE TYPE HAVING A TUBULAR BODY WITH A SERIES OF EQUI-ANGULARLY SPACED RADIALLY AND AXIALLY EXTENDING PRESSURE CHAMBERS OF RECTANGULAR CROSS SECTION FORMED THEREIN AND OPENING TO THE RADIALLY INNER SIDE OF THE BODY AND CLOSED AT THEIR OUTER SIDES, FIRST AND SECOND END MEMBERS SECURED TO THE ENDS OF SAID BODY AND ROTATABLY SUPPORTING AN OUT-PUT SHAFT CONNCENTRICALLY BETWEEN SAID PRESSURE CHAMBERS, ECCENTRIC MEANS ON SAID SHAFT AT LONGITUDINALLY SPACED POINTS THEREALONG, ELONGATED RIGID DRIVE ELEMENTS OF GENERALLY RECTANGULAR CROSS SECTION RADIALLY AND SEALINGLY RECIPROCABLE IN SAID CHAMBERS, THRUST MEANS DRIVINGLY AND ROLLINGLY ENGAGED BETWEEN THE INNER SIDES OF SAID DRIVE ELEMENTS AND SAID ECCENTRIC MEANS, AND VALVE MEANS IN ONE OF SAID END MEMBERS ARRNAGED TO ADMIT AIR UNDER PRESSURE SUCCESSIVELY TO SAID PRESSURE CHAMBERS AND EXHAUST AIR THEREFROM, CHARACTERIZED BY A MANIFOLD IN SAID ONE END MEMBER AND HAVING A CYLINDRICAL CENTRAL BORE, INDIVIDUAL AXIAL PASSAGES FORMED IN SAID ONE END MEMBER OPENING RADIALLY THROUGH SAID MANIFOLD AT ANGULARLY SPACED POINTS THEREAROUND AND ANGLING AXIALLY TO THE FACE OF THE END MEMBER AT THE ENDS OF SAID CHAMBERS, A VALVE SPOOL ROTATABLY AND SEALINGLY FITTED WITHIN SAID MANIFOLD AND DRIVINGLY CONNECTED TO SAID SHAFT, SAID ONE END MEMBER HAVING TWO PASSAGES FORMED THEREIN AND CONNECTABLE ALTERNATIVELY AND SELECTIVELY AS INLET AND EXHAUST PASSAGES, SAID PASSAGES OPENING TO CONTINUOUS ANNULAR GROOVES SPACED AXIALLY ALONG SAID SPOOL ON OPPOSITE SIDES OF THE OUTER ENDS OF SAID AXIAL PASSAGES IN SAID ONE END MEMBER, AND A VALVE GROOVE FORMED IN THE PERIPHERY OF SAID SPOOL BETWEEN SAID CONTINUOUS GROOVES AND IN THE PLANE OF THE OUTER ENDS OF SAID AXIAL PASSAGES IN SAID ONE END MEMBER, SAID VALVE GROOVE HAVING A FIRST BLOCKING WALL EXTENDING ANGULARLY AROUND THE GROOVE FURTHER THAN THE ANGULAR WIDTH OF THE OPENINGS OF SAID AXIAL PASSAGES TO SAID MANIFOLD, OTHER BLOCKING WALLS EXTENDING ACROSS SAID VALVE GROOVE IN SYMMETRICALLY SPACED POSITIONS IN ANGULARLY OPPOSITE SIDES OF SAID FIRST BLOCKING WALL AND LOCATED OVER 90* FROM THE CENTER OF SAID FIRST BLOCKING WALL, SAID OTHER BLOCKING WALLS EXTENDING ANGULARLY AROUND THE GROOVE FURTHER THAN THE ANGULAR WIDTH OF THE OPENINGS OF SAID AXIAL PASSANGES TO SAID MANIFOLD, A RADIALLY INWARDLY OPENING PRIMARY EXHAUST OPENING FORMED IN SAID VALVE GROOVE BETWEEN SAID OTHER BLOCKING WALLS AND CONTINUOSLY OPEN TO THE EXTERIOR OF SAID MANIFOLD, A FIRST AXIAL OPENING FORMED IN SAID SPOOL BETWEEN ONE OF SAID AXIALLY SPACED GROOVES AND SAID VALVE GROOVE ON ONE SIDE OF SAID FIRST BLOCKING WALL, AND ANOTHER AXIAL OPENING FORMED IN SAID SPOOL BETWEEN THE OTHER OF THE SAID AXIALLY SPACED GROOVES AND SAID VALVE GROOVE ON THE OPPOSITE SIDE OF SAID FIRST BLOCKING WALL.