Axial piston pump drive

Claim 1

A PUMP COMPRISING A HOUSING HAVING AN INLET AND AN OUTLET, A CYLINDER BLOCK MOUNTED IN THE HOUSING, SAID CYLINDER BLOCK HAVING A PLURALITY OF AXIAL CYLINDERS THEREIN, A PUMPING PISTON MOUNTED IN EACH OF SAID CYLINDERS TO MOVE FLUID TO SAID OUTLET, SPRING MEANS NORMALLY BIASING SAID PISTONS TO ONE END OF THE STROKE TO FILL THE CYLINDER WITH FLUID, MEANS TO OVERCOME SAID PISTON SPRING BIAS COMPRISING A DRIVING SHAFT JOURNALED IN THE HOUSING, A DRIVING CAM IN SAID HOUSING COAXIAL WITH SAID DRIVING SHAFT, AN ANNULAR FLUID FILM BEARING INTERPOSED BETWEEN ONE SIDE OF SAID CAM AND SAID HOUSING, PISTON RODS OPERATIVELY CONNECTED TO SAID PISTONS, A REACTION MEMBER INTERPOSED BETWEEN SAID PISTON RODS AND SAID DRIVING CAM, AN ANNULAR FLUID FILM BEARING INTERPOSED BETWEEN SAID DRIVING CAM AND SAID REACTION MEMBER, MEANS ON SAID HOUSING AND ON SAID REACTION MEMBER TO PREVENT ROTATION OF THE REACTION MEMBER IN RESPONSE TO ROTATION OF THE DRIVING CAM TO PERMIT SAID REACTION MEMBER TO BE PROGRESSIVELY TILTED AND RECIPROCATE THE PISTONS DURING ROTATION OF THE DRIVING CAM, AND MEANS DRIVINGLY CONNECTING SAID DRIVING CAM TO SAID DRIVING SHAFT FOR ROTATION THEREWITH WHILE ALLOWING LIMITED UNIVERSAL ROCKING MOTION OF SAID DRIVING CAM RELATIVE TO SAID SHAFT AND SAID BEARINGS TO PERMIT THE DIFFERENTIAL REACTION FORCES EXERTED ON SAID REACTION MEMBER TO CAUSE A PROGRESSIVE ROCKING ACTION OF SAID DRIVING CAM WITH RESPECT TO SAID FLUID FILM BEARINGS TO CREATE A ROTATING WEDGE SHAPED OIL FILM AT SAID BEARINGS.