Multi-piston variable stroke pump

Claim 1

A MULTI-PISTON VARIABLE STROKE PUMP POWER END COMPRISING IN COMBINATION: A HOUSING; A DRIVE SHAFT ROTATABLY SUPPORTED IN SAID HOUSING AND HAVING THE REARWARD END THEREOF EXTENDING FROM SAID HOUSING; A MULTIPLICITY OF PUSH RODS SLIDEABLY SUPPORTED IN SAID HOUSING ADJACENT THE FORWARD END OF SAID DRIVE SHAFT, EACH OF SAID PUSH RODS SUPPORTED PARALLEL THE AXIS OF SAID DRIVE SHAFT AND EACH DISPLACED AN EQUAL DISTANCE THEREFROM; A FORWARD WOBBLE PLATE SUPPORTED ON SAID DRIVE SHAFT, SAID FORWARD WOBBLE PLATE HAVING ENGAGEMENT AT THE FORWARD FACE THEREOF WITH THE REARWARD END OF EACH OF SAID PUSH RODS, SAID FORWARD WOBBLE PLATE FREE TO WOBBLE ON SAID DRIVE SHAFT; A REARWARD WOBBLE PLATE SUPPORTED ABOUT SAID SHAFT, THE FORWARD FACE THEREOF IN BEARING ENGAGEMENT WITH THE REARWARD FACE OF SAID FORWARD WOBBLE PLATE, THE REARWARD FACE OF SAID REARWARD WOBBLE PLATE BEING FORMED AT AN ANGLE RELATIVE TO THE FORWARD FACE THEREOF; A TUBULAR WOBBLE PLATE ADJUST MEMBER ROTATABLY AND AXIALLY SUPPORTED ABOUT SAID SHAFT, SAID WOBBLE PLATE ADJUST MEMBER HAVING A FLAT FORWARD FACE THEREOF INCLINED AT AN ANGLE TO THE AXIS OF SAID SHAFT, SAID FORWARD FACE THEREOF IN FRICTIONAL ENGAGEMENT WITH SAID REARWARD FACE OF SAID REARWARD WOBBLE PLATE, SAID WOBBLE PLATE ADJUST MEMBER HAVING A PORTION THEREOF EXTENDING COAXIALLY OF SAID SHAFT AND EXTERIORALLY OF SAID HOUSING; BEARING MEANS ROTATABLY SUPPORTING SAID WOBBLE PLATE ADJUST MEMBER TO SAID HOUSING; AND MEANS EXTERNALLY OF SAID HOUSING OF ADJUSTABLY SECURING SAID WOBBLE PLATE ADJUST MEMBER TO SAID SHAFT.