Hydraulic actuated pumping system

Claim 1

FLUID PUMPING APPARATUS FOR DELIVERING A CONSTANT VOLUMETRIC FLOW OF FLUID COMPRISING, IN COMBINATION: (A) AN ENCLOSED HOUSING CONTAINING A PAIR OF HYDRAULIC CHAMBERS; (B) A COLLAPSIBLE TUBE DISPOSED WITHIN EACH OF SAID HYDRAULIC CHAMBERS; (C) AN INLET CONDUIT FOR SUPPLY OF A PUMPED FLUID COMMUNICATING WITH AN INLET SIDE OF EACH OF SAID COLLAPSIBLE TUBES; (D) AN OUTLET CONDUIT FOR DELIVERY OF SAID PUMPED FLUID COMMUNICATING WITH AN OUTLET SIDE OF EACH OF SAID COLLAPSIBLE TUBES; (E) VALVE MEANS DISPOSED AT THE INLET AND OUTLET OF EACH OF SAID COLLAPSIBLE TUBES AND RESTRICTING FLOW OF PUMPED FLUID THERETHROUGH TO A SINGLE DIRECTION; (F) A CONSTANT OUTPUT HYDRAULIC PUMP; (G) A RESERVOIR FOR AN ACTUATING FLUID COMMUNICATING WITH THE SUCTION SIDE OF SAID HYDRAULIC PUMP; (H) FIRST CONDUITS CONNECTING THE DISCHARGE SIDE OF SAID HYDRAULIC PUMP TO EACH HYDRAULIC CHAMBER; (I) SECOND CONDUITS CONNECTING EACH HYDRAULIC CHAMBER TO SAID RESERVOIR; (J) CYCLICALLY OPERATED FAST-ACTING VALVE MEANS DISPOSED IN EACH OF SAID FIRST AND SECOND CONDUITS FOR ALTERNATELY ADMITTING THE ACTUATING FLUID IMPELLED BY SAID HYDRAULIC PUMP TO EACH OF SAID HYDRAULIC CHAMBERS; AND (K) CONTROL MEANS OPERATIVELY CONNECTED TO SAID CYCLICALLY OPERATED VALVE MEANS FOR OPERATION THEREOF AT A CYCLIC RATE WHICH IS INDEPENDENT OF PRESSURE OBTAINING IN SAID HYDRAULIC CHAMBERS; WHEREBY THE ACTUATING FLUID FLOWS FROM ONE OF SAID HYDRAULIC CHAMBERS TO SAID RESERVOIR WHILE SIMULTANEOUSLY BEING DIRECTED INTO THE OTHER OF SAID HYDRAULIC CHAMBERS FROM THE DISCHARGE SIDE OF SAID HYDRAULIC PUMP TO THEREBY EFFECT SUCCESSIVE ALTERNATE INCREASES AND DECREASES OF HYDRAULIC PRESSURE IN EACH OF SAID HYDRAULIC CHAMBERS AND ACCORDINGLY TO SUBJECT AND COLLAPSIBLE TUBES TO SUCCESSIVE ALTERNATE SQUEEZING AND IMPEL SAID PUMPED FLUID AT A SUBSTANTIALLY CONSTANT VOLUMETRIC RATE.