Differential pump

Claim 1

A HYDRAULIC FLUID DIFFERENTIAL PUMP COMPRISING A PLURALITY OF CYLINDERS OF DIFFERING DIAMETERS CONNECTED TOGETHER BY A HOUSING SO AS TO BE IN AXIAL ALIGNMENT, A PISTON POSITIONED IN EACH CYLINDER, EACH PISTON HAVING AN EXTENT AXIALLY OF ITS CYLINDER LESS THAN THE AXIAL EXTENT OF THE RESPECTIVE CYLINDER WHEREBY A PLURALITY OF OPEN SPACES ARE FORMED BETWEEN OPPOSING SIDES OF ADJACENT PISTONS, A CONNECTING MEMBER CONNECTING THE PISTONS TOGETHER SO AS TO MAINTAIN A CONSTANT DISTANCE THEREBETWEEN, MOTIVE MEANS FOR INITIATING RECIPROCAL MOVEMENT OF THE PISTONS, THE HOUSING DEFINING PASSAGES MEANS FOR INTERCONNECTING AT LEAST A PAIR OF SAID OPEN SPACES, FLUID FLOW MEANS FOR INTRODUCING A HYDRAULIC FLUID INTO THE INTERCONNECTED SPACES BETWEEN THE PISTONS AS THE TOTAL VOLUME OF THE INTERCONNECTED SPACES INCREASES DUE TO PISTON MOTION AND FOR EXTRACTING FLUID FROM THE INTERCONNECTED SPACES AS THE TOTAL VOLUME OF THE INTERCONNECTED SPACES DECREASES DUE TO PISTON MOTION, WHEREBY THE CHANGE IN VOLUME IN THE INTERCONNECTED SPACES RESULTING FROM PISTON MOTION IS UTILIZED TO PUMP FLUID FROM THE FLUID CONTAINING SPACES, THE QUANTITY OF FLUID PUMPED BEING EQUAL TO THE CHANGE IN VOLUME OF SAID INTERCONNECTED SPACES.