Electro-hydraulic servo valve

Claim 1

AN ELECTRO-HYDRAULIC SERVO VALVE WHICH INCLUDES A VALVE BODY HAVING AN INTERNAL CAVITY FORMED THEREIN AND HAVING A PLURALITY OF PASSAGES LEADING INTO THE INTERIOR OF SAID CAVITY, THE ENDS OF SAID PASSAGES LEADING INTO THE INTERIOR OF SAID CAVITY BEING SPACED FROM ONE ANOTHER; A VALVE ROTOR ROTATABLY MOUNTED WITHIN SAID CAVITY, SAID VALVE ROTOR FITTING CLOSELY AGAINST THE INTERIOR OF SAID CAVITY AND HAVING NOTCH MEANS FORMED THEREIN CAPABLE OF CONNECTING CERTAIN OF SAID PASSAGES WITH OTHER OF SAID PASSAGES WHEN SAID VALVE ROTOR IS TURNED; SHAFT MEANS FOR USE IN ROTATING SAID VALVE ROTOR CONNECTED TO SAID VALVE ROTOR SO AS TO HAVE AN END SPACED FROM SAID VALVE ROTOR; TORQUE TUBE MEANS ATTACHED TO SAID VALVE BODY SO AS TO EXTEND AROUND SAID SHAFT MEANS, SAID END OF SAID SHAFT MEANS REMOTE FROM SAID VALVE BODY BEING SECURED TO SAID TORQUE TUBE MEANS; AND TORQUE MOTOR MEANS MOUNTED ON SAID VALVE BODY, PART OF SAID TORQUE MOTOR MEANS BEING CONNECTED TO SAID SHAFT MEANS, SAID TORQUE MOTOR MEANS BEING RESPONSIVE TO AN ELECTRICAL SIGNAL SO AS TO ROTATE SAID SHAFT AND SAID VALVE ROTOR IN ORDER TO OPERATE SAID VALVE.