Pumping apparatus

Claim 1

A PUMP OF THE CHARACTER REFERRED TO INCLUDING AN ELONGATED TUBULAR BARREL HAVING A STANDING VALVE AT ITS LOWER END AND A PLURALITY OF ALTERNATE RADIALLY INWARDLY DISPOSED SEALING SURFACES AND RADIALLY INWARDLY OPENING RECESSES THROUGHOUT ITS LONGITUDINAL EXTENT, AN ELONGATE TUBULAR PLUNGER HAVING A WOKING VALVE AT ITS UPPER END AND A FOOT VALVE AT ITS LOWER END ARRANGED WITHIN THE BARREL FOR LONGITUDINAL SHIFTING THEREIN AND HAVING A PLURALITY OF ALTERNATE RADIALLY OUTWARDLY DISPOSED SEALING SURFACES AND RADIALLY OUTWARDLY OPENING RECESSES, SAID SEALING SURFACES AND RECESSES IN THE BARREL AND ABOUT THE PLUNGER OPPOSING EACH OTHER AND ESTABLISHING A FLUID BEARING AND SEAL BETWEEN THE PLUNGER AND BARREL, SAID RECESSES AND SEALING SURFACES BEING ARRANGED WHEREBY COMMUNICATION BETWEEN THE SEVERAL RECESSES IN THE BARREL AND PLUNGER IS NOT ESTABLISHED, SAID RECESSES IN THE BARREL BEING VSHAPED AND HAVING RADIALLY INWARDLY AND UPWARDLY INCLINED SAID WALLS AND RADIALLY INWARDLY AND UPWARDLY INCLINED BOTTOM WALLS, SAID RECESSES ABOUT THE PLUNGER BEING V-SHAPED AND HAVING RADIALLY OUTWARDLY AND UPWARDLY INCLINED SIDE WALLS AND RADIALLY UPWARDLY AND OUTWARDLY INCLINED BOTTOM WALLS, SAID SIDE AND BOTTOM WALLS IN THE RECESSES DEFINING UPWARDLY OPENING CATCH BASINS IN AND ABOUT THE BARREL AND PLUNGER, SAID INCLINED BOTTOM WALLS SERVING TO CATCH AND DIRECT FLUID MOVING DOWNWARDLY RELATIVE TO THE PLUNGER AND THE BARREL RADIALLY INTO THE RECESSES, SAID SIDE WALLS OF THE RECESSES DIRECTING SAID FLUID FLOWING INTO THE RECESSES AT THE BOTTOM THEREOF UPWARDLY AND OUTWARDLY IN THE RECESSES.