Radial pump

Claim 1

A RADIAL PUMP COMPRISING (A) CASING MEANS DEFINING A CENTRAL CRANKCASE AND A PLURALITY OF CYLINDERS EXTENDING RADIALLY OUTWARDLY FROM SAID CRANKCASE IN A COMMON PLANE AND ARRANGED IN DIAMETRICALLY OPPOSED PAIRS, EACH PAIR BEING ANGULARLY DISPLACED RELATIVE TO ANOTHER OF SAID PAIRS, A PUMP CHAMBER AT THE OUTER PORT, AND INCYLINDERS, AN INLET PASSAGES CONNECTING EACH OF SAID INLET LET AND OUTLET PASSAGES CONNECTING EACH OF SAID INLET AND OUTLET PORTS WITH SAID CHAMBERS, (B) CHECK VALVES INTERPOSED BETWEEN SAID INLET AND OUTLET PASSAGES AND EACH OF SAID PUMP CHAMBERS AND OPERATIVE TO ADMIT FLUID TO SAID CHAMBERS ONLY FROM SAID INLET PASSAGES AND FROM SAID CHAMBERS ONLY TO SAID OUTLET PASSAGES, (C) A PLURALITY OF PISTONS ONE EACH AXIALLY SLIDABLE IN A DIFFERENT ONE OF SAID CYLINDERS, (D) A ROTARY SHAFT AXIALLY JOURNALLED IN SAID CASING MEANS, (E) AN ECCENTRIC ELEMENT ON SAID SHAFT, (F) PISTON RODS RIGIDLY CONNECTED TO AND EXTENDING RADIALLY INWARDLY EACH FROM A DIFFERENT ONE OF SAID PISTONS, (G) MEANS RIGIDLY SECURING THE INNER ENDS OF OPPOSED PISTON RODS TOGETHER FOR COMMON RECIPROCATORY MOVEMENT OF RESPECTIVE OPPOSED ONES OF SAID PISTONS, AND OPERATIVELY CONNECTING SAID PISTON RODS TO SAID ECCENTRIC ELEMENT, WHEREBY TO IMPART RECIPROCATORY MOVEMENT TO SAID PISTON RODS AND PISTONS RESPONSIVE TO ROTARY MOVEMENT OF SAID SHAFT, (H) SAID CASING MEANS FURTHER DEFINING OPENINGS INTERMEDIATE SAID PISTONS AND THE RADIAL INNER ENDS OF SAID CYLINDERS AND ESTABLISHING COMMUNICATION BETWEEN SAID CYLINDERS AND THE EXTERIOR OF SAID CASING MEANS, AND (I) SEALING MEANS IN EACH OF SAID CYLINDERS INTERMEDIATE SAID OPENINGS AND THE RADIAL INNER ENDS OF SAID CYLINDERS.