Fluid suspensions for vehicles

Claim 1

IN A VEHICLE SUSPENSION, IN COMBINATION, VARIABLEVOLUME CHAMBER MEANS ADAPTED TO BE SITUATED BETWEEN THE AXLE AND BODY OF A VEHICLE FOR YIELDABLY AND RESILIENTLY SUPPORTING THE BODY OF THE VEHICLE OVER SAID AXLE WITH A FLUID UNDER PRESSURE IN THE INTERIOR OF SAID VARIABLE-VOLUME CHAMBER MEANS; A CONTAINER ADAPTED TO CONTAIN SAID FLUID UNDER PRESSURE IN THE INTERIOR OF SAID VARIABLE-VOLUME MEANS HAVING A SUCTION SIDE AND A PRESSURE SIDE; PRESSURE CONDUIT MEANS OPERATIVELY CONNECTED TO SAID PRESSURE SIDE OF SAID PUMP MEANS AND SAID VARIABLE-VOLUME CHAMBER MEANS AND SAID CONTAINER FOR PROVIDING COMMUNICATION BETWEEN SAID PRESSURE SIDE OF SAID PUMP MEANS AND SAID CHAMBER MEANS AND THE INTERIOR OF SAID CONTAINER; SUCTION CONDUIT MEANS OPERATIVELY CONNECTED TO SAID SUCTION SIDE OF SAID PUMP MEANS AND TO SAID CONTAINER AND VARIABLE-VOLUME CHAMBER MEANS FOR PROVIDING COMMUNICATION BETWEEN THE SUCTION SIDE OF SAID PUMP MEANS AND THE INTERIOR OF SAID CONTAINER AS WELL AS WELL AS BETWEEN THE SUCTION SIDE OF SAID PUMP MEANS AND SAID VARIABLE-VOLUME CHAMBER MEANS; A NORMALLY CLOSED MAIN PRESSURE VALVE MEANS IN SAID PRESSURE CONDUIT MEANS FOR CONTROLLING COMMUNICATION BETWEEN SAID PUMP MEANS AND CHAMBER MEANS; A NORMALLY OPEN AUXILIARY PRESSURE VALVE MEANS OPERATIVELY CONNECTED TO SAID PRESSURE CONDUIT MEANS FOR CONTROLLING COMMUNICATION BETWEEN SAID PUMP MEANS AND THE INTERIOR OF SAID CONTAINER; A NORMALLY CLOSED MAIN SUCTION VALVE MEANS IN SAID SUCTION CONDUIT MEANS FOR CONTROLLING COMMUNICATION BETWEEN SAID SUCTION SIDE OF SAID PUMP MEANS AND SAID CHAMBER MEANS; A NORMALLY OPEN AUXILIARY SUCTION VALVE MEANS OPERATIVELY CONNECTED TO SAID SUCTION CONDUIT MEANS FOR CONTROLLING COMMUNICATION BETWEEN SAID SUCTION SIDE OF SAID PUMP MEANS AND THE INTERIOR OF SAID CONTAINER; AND CONTROL MEANS SENSING THE DISTANCE BETWEEN SAID BODY OF SAID VEHICLE AND SAID AXLE AND OPERATIVELY CONNECTED TO A 1 OF SAID VALVE MEANS FOR OPENING SAID NORMALLY CLOSED MAIN PRESSURE VALVE MEANS AND SIMULTANEOUSLY CLOSING SAID NORMALLY OPEN AUXILIARY PRESSSURE VALVE MEANS FOR CUTTING OFF COMMUNICATION BETWEE THE INTERIOR OF THE CONTAINER AND THE PRESSURE SIDE OF SAID PUMP MEANS FOR PROVIDING COMMUNICATION BETWEEN THE PRESSURE SIDE OF SAID PUMP MEANS AND SAID CHAMBER MEANS SO THAT SAID PUMP MEANS WILL THEN PUMP FLUID FROM THE INTERIOR OF SAID CONTAINER THROUGH SAID NORMALLY OPEN AUXILIARY SUCTION VALVE MEANS AND SAID SUCTION CONDUIT MEANS INTO SAID PUMP MEANS AND OUT OF THE LATTER THROUGH SAID PRESSURE CONDUIT MEANS AND SAID MAIN PRESSURE VALVE MEANS INTO SAID CHAMBER MEANS FOR INCREASING THE DISTANCE BETWEEN THE VEHICLE BODY AND AXLE WHEN SAID CONTROL MEANS SENSES THAT SAID DISTANCE IS LESS THAN A PREDETERMINED MAGNITUDE, AND SAID CONTROL MEANS AUTOMATICALLY CLOSING SAID AUXILIARY SUCTION VALVE MEANS AND OPENING SAID MAIN SUCTION VALVE MEANS FOR CUTTING OFF COMMUNICATION BETWEEN SAID SUCTION CONDUIT MEANS AND THE INTERIOR OF SAID CONTAINER AND FOR PROVIDING COMMUNICATION BETWEEN SAID CHAMBER MEANS AND SAID PUMP MEANS THORUGH SAID SUCTION CONDUIT MEANS FOR WITHDRAWING WITH SAID PUMP MEANS FLUID UNDER PRESSURE FROM SAID CHAMBER MEANS TO PUMP SAID FLUID UNDER PRESSURE OUT THROUGH SAID PRESSURE CONDUIT MEANS AND NORMALLY OPEN AUXILIARY PRESSURE VALVE MEANS INTO SAID CONTAINER WHEN SAID CONTROL MEANS SENSES THAT THE DISTANCE BETWEEN THE VEHICLE BODY AND AXLE IS GREATER THAN SAID PREDETERMINED MAGNITUDE.