Combination side and end port pump

Claim 1

A COMBINATION SIDE AND END PORTED PUMP COMPRISING: (A) A HOUSING HAVING LONGITUDINALLY SPACED END WALLS AND AN INTERMEDIATE CIRCUMFERENTIAL WALL DEFINING A GENERALLY CYLINDRICAL PUMPING CHAMBER, (B) ONE OF SAID END WALLS HAVING FIRST ARCUATELY SPACED INLET AND OUTLET PORTS EXTENDING TRANSVERSELY THERETHROUGH, SAID FIRST ARCUATELY SPACED INLET AND OUTLET PORTS BEING DISPOSED ADJACENT TO THE OUTER PERIPHERY OF SAID END WALL AND GENERALLY RADIALLY INWARDLY OF SAID CIRCUMFERENTIAL WALL, (C) SAID CIRCUMFERENTIAL WALL HAVING SECOND ARCUATELY SPACED INLET AND OUTLET PORTS, SAID FIRST ASND SECOND INLET AND OUTLET PORTS EACH HAVING MEANS FOR ENGAGING PIPES FOR INDIVIDUALLY ACCOMMODATING THE FLUID CAPACITY OF THE PUMP, (D) A ROTOR ROTATABLY MOUNTED WITHIN SAID PUMPING CHAMBER AND HAVING ITS AXIS IN OFFSET PARALLEL RELATION TO THAT OF SAID PUMPING CHAMBER AND HAVING A LENGTH SUCH AS TO EXTEND FROM SAID ONE END WALL TO THE OTHER, (E) SAID ROTOR HAVING A PLURALITY OF ROLLER RECEIVING SLOTS FORMED INTO AND ACROSS THE CIRCUMFERENTIAL SURFACE THEREOF, EACH SLOT HAVING SPACED, GENERALLY RADIALLY EXTENDING LEADING AND TRAILING FACES, AND (F) A ROLLER RECEIVED FOR FREE ROTATION IN EACH OF SAID SLOTS, SAID SLOTS COMMUNICATING SEQUENTIALLY WITH EACH OF SAID PORTS DURING ROTATION OF SAID ROTOR, (G) SAID LEADING AND TRAILING FACES BEING ARRANGED TO PROVIDE COMMUNICATION BETWEEN SAID OUTLET PORTS AND EACH OF SAID SLOTS WHEN EACH OF SAID ROLLERS IS MOVED INTO PROXIMAL RELATIONSHIP WITH SAID OUTLET PORTS, AND (H) WHEREBY EITHER OR BOTH OF SAID INLET PORTS CAN BE SELECTIVELY CONNECTED TO A SOURCE OF FLUID AND EITHER OR BOTH OF SAID OUTLET PORTS CAN BE USED TO DISCHARGE FLUID THERETHROUGH.