Flow regulator for fluid systems

Claim 1

IN A PROPULSION SYSTEM FOR THE DISPLACEMENT OF A DRIVEN UNIT BY A SOURCE OF FLUID UNDER PRESSURE, SAID SYSTEM INCLUDING FIRST CONDUIT MEANS EXTENDING FROM A DISCHARGE PORT OF SAID SOURCE TO AN INLET SIDE OF SAID UNIT AND SECOND CONDUIT MEANS EXTENDING FROM AN OUTLET SIDE OF SAID UNIT TO AN INTAKE PORT OF SAID SOURCE, THE COMBINATION THEREWITH OF THIRD CONDUIT MEANS CONNECTING SAID FIRST CONDUIT MEANS WITH SAID SECOND CONDUIT MEANS; THROTTLE MEANS IN SAID THIRD CONDUIT MEANS; FIRST VALVE MEANS IN SAID THIRD CONDUIT MEANS BETWEEN SAID THROTTLE MEANS AND SAID SECOND CONDUIT MEANS; SECOND VALVE MEANS IN SAID SECOND CONDUIT MEANS BETWEEN SAID OUTLET SIDE OF SAID UNIT AND JUNCTION OF SAID SECOND VALVE MEANS IN SAID MEANS, SAID SECOND VALVE MEANS BEING GANGED WITH SAID FIRST VALVE MEANS FOR JOINT OSCILLATION BETWEEN A FIRST POSITION AND A SECOND POSITION, SAID SECOND CONDUIT MEANS BEING UNBLOCKED BY SAID SECOND VALVE MEANS IN SAID FIRST POSITION ONLY FOR OPERATION OF SAID UNIT BY FLUID FROM SAID SOURCE, SAID THIRD CONDUIT MEANS BEING UNBLOCKED BY SAID FIRST VALVE MEANS IN SAID SECOND POSIITON ONLY FOR BYPASSING FLUID FROM SAID DISCHARGE PORT TO SAID INTAKE PORT; ACCUMULATOR MEANS FOR FLUID UNDER PRESSURE CONNECTED TO SAID THIRD CONDUIT MEANS AT A LOCATION BETWEEN SAID THROTTLE MEANS AND SAID FIRST VALVE MEANS; BIASING MEANS COUPLED WITH SAID FIRST AND SECOND VALVE MEANS FOR TENDING TO MAINTAIN SAME IN SAID FIRST POSITION; AND ACTUATING MEANS RESPONSIVE TO FLUID PRESSURE AT SAID LOCATION FOR URGING SAID FIRST AND SECOND VALVE MEANS INTO SAID SECOND POSITION AGAINST THE FORCE OF SAID BIASING MEANS UPON SAID PRESSURE REACHING A PREDETERMINED MAXIMUM WHEREBY SAID SECOND VALVE MEANS BLOCKS SAID SECOND CONDUIT MEANS AHEAD OF SAID JUNCTION AND SAID ACCUMULATOR MEANS DISCHARGES THROUGH SAID JUNCTION UNTIL THE PRESSURE AT SAID LOCATION DROPS TO A PREDETERMINED MINIMUM ALLOWING SAID BIASING MEANS TO RESTORE SAID FIRST AND SECOND VALVE MEANS TO SAID FIRST POSITION.