Hydromechanical rate damped servo system

Claim 1

IN A HYDRAULIC CONTROL MECHANISM: A FLUID PRESSURE ACTUATOR MECHANISM ADAPTED TO BE CONNECTED TO A DEVICE TO BE ACTUATED, SAID ACTUATOR HAVING A PART MOVABLE IN OPPOSITE DIRECTIONS BY FLUID PRESSURE; POWER VALVE MEANS INCLUDING A MOVABLE VALVE MEMBER; YIELDING MEANS NORMALLY BALANCING SAID VALVE MEMBER AT A NEUTRAL POSITION WHEREAT THE MECHANISM IS INOPERATIVE; FEEDBACK MEANS INCLUDING A FEEDBACK CYLINDER; A FEEDBACK PISTON SLIDABLE THEREIN AND HAVING A PASSAGE THERETHROUGH WITH A RESTRICTED ORIFICE THEREIN; OPPOSITELY ACTING YIELDING MEANS NORMALLY POSITIONING SAID PISTON IN A NEUTRAL POSITION; A MAIN PRESSURE SUPPLY CONDUIT CONNECTED WITH THE POWER VALVE MEANS; A CONDUIT CONNECTING SAID POWER VALVE MEANS WITH ONE SIDE OF SAID ACUTUATOR; A CONDUIT CONNECTING THE OTHER SIDE OF SAID ACTUATOR WITH ONE END OF THE FEEDBACK CYLINDER; A CONDUIT CONNECTING SAID POWER VALVE MEANS WITH THE OTHER END OF SAID FEEDBACK CYLINDER; A PAIR OF OPPOSED NOZZLES SPACED APART; A CONDUIT CONNECTING SAID SUPPLY CONDUIT WITH ONE OF SAID NOZZLES AND HAVING A RESTRICTED ORIFICE THEREIN, SAID CONDUIT ALSO HAVING A CONNECTION WITH ONE SIDE OF SAID MOVABLE VALVE MEMBER DOWNSTREAM OF SAID ORIFICE; A CONDUIT CONNECTING SAID SUPPLY CONDUIT WITH THE OTHER NOZZLE AND HAVING A RESTRICTED ORIFICE THEREIN AND A CONNECTION, DOWNSTREAM OF SAID ORIFICE, WITH THE OTHER SIDE OF SAID MOVABLE VALVE