Hydraulic pump

Claim 1

IN A FLUID PUMP, A HOUSING, A ROTOR ROTATABLE WITHIN SAID HOUSING, A CAM ELEMENT EXTENDING AROUND SAID ROTOR AND COOPERATING THEREWITH TO PROVIDE TWO PUMPING CHAMBERS AND TWO INLET CHAMBERS MUTUALLY SPACING EACH OTHER CIRCUMFERENTIALLY, AN INLET HEADER EXTENDING AROUND THE CIRCUMFERENCE OF SAID ELEMENT BETWEEN THE LATTER AND SAID HOUSING, A PAIR OF CIRCUMFERENTIALLY SPACED INLET PORTS EXTENDING FROM SAID INLET HEADER GENERALLY RADIALLY THROUGH SAID ELEMENT INTO SAID INLET CHAMBERS RESPECTIVELY, A PAIR OF CIRCUMFERENTIALLY SPACED DISCHARGE PORTS OPENING AXIALLY INTO SAID PUMPING CHAMBERS RESPECTIVELY TO RECEIVE PRESSURIZED FLUID THEREFROM, A PLURALITY OF PUMPING MEMBERS CARRIED BY SAID ROTOR AND ENGAGING SAID CAM ELEMENT TO EFFECT PORTS AND ALSO TO PUMP FLUID FROM EACH INLET PORT TO INLET PORTS AND ALSO TO PUMP FLUID FROM EACH INLET PORT TO THE NEXT SUCCESSIVE DISCHARGE PORT IN THE DIRECTION OF ROTATION OF SAID ROTOR, EACH FEATURE OF SAID CAM ELEMENT AND EACH INLET AND DISCHARGE PORT BEING DUPLICATED BY A DIAMETRICALLY OPPOSITE FEATURE TO EFFECT TWO IDENTICAL DIAMETRICALLY OPPOSED PUMP SYSTEMS MEASURED WITH RESPECT TO ANY DIAMETER IN SAID DIRCTION OF ROTATION, AND MEANS TO ASSURE SUBSTANTIALLY EQUAL SUPPLY OF FLUID TO EACH INLET PORT FROM SAID INLET HEADER COMPRISING A FLUID SUPPLY PORT OPENING INTO SAID INLET HEADER AT A LOCATION ASYMMETRIC WITH RESPECT TO SAID INLET PORTS, THE CIRCUMFERENTIAL DISTANCE FROM SAID SUPPLY PORT MEASURED IN SAID DIRECTION OF ROTATION TO THE NEXT ADJACENT INLET PORT BEING GREATER THAN THE CIRCUMFERENTIAL DISTANCE FROM SAID SUPPLY PORT TO THE OTHER INLET PORT MEASURED IN THE OPPOSITE DIRECTION.