Hydraulic intensifier system

Claim 1

IN AN INTENSIFER ASSEMBLY COMPRISING AN INTENSIFIER UNIT HAVING AT LEAST TWO LOW AND HIGHT PRESSURE PISTON FACES, A HIGH PRESSURE MANIFOLD AND CONDUIT CONNECTIONS FROM EACH SAID HIGH PRESSURE PISTON FACE TO SAID HIGHT PRESSURE MANIFOLD, CONDUIT MEANS FOR SUPPLING A COMPRESSIBLE FLUID TO SAID HIGH PRESSURE PISTON FACES, PUMP AND CONDUIT MEANS FOR SUPPLYING A P1 AND P2 HYDRAULIC FLUID PRESSURE LEVEL, A FIRST DIFFERENTIAL PRESSURE REGULATING VALVE MEANS FOR MAINTAINING SAID P1 AND P2 PRESSURE LEVELS ACROSS AN ORIFICE IN ASSOCIATION WITH A CONDUIT MEANS FOR SUPPLYING HYDRAULIC FLUID OF A SECOND DIFFERENTIAL PRESSURE FACES, THE COMBINATION OF A SECOND DIFFERENTIAL PRESSURE REGULATING VALVE, CONDUIT CONNECTIONS FROM SAID FIRST TO SAID SECOND VALVE FOR BY-PASSING HYDRAULIC FLUID IN EXCESS OF THE P2 PRESSURE LEVEL A CONDUIT LEADING FROM CONDUIT CONNECTIONS TO A FURTHER CONDUIT FOR ESTABLISHING A THIRD PRESSURE LEVEL P3 FROM SAID BYPASSED FLUID FROM THE P2 PRESSURE LEVEL, AND CONDUIT MEANS FOR LEADING AND P3 PRESSURE LEVEL TO AN ACCUMULATOR FOR MOMENTARILY STORING HYDRAULIC FLUID OF SAID P3 LEVEL, CONDUIT CONNECTIONS BETWEEN SAID ACCUMULATOR AND A BY-PASS CONDUIT AND VALVE FOR DIRECTLY DELIVERING SAID P2 PRESSURE LEVEL PLUS SAID ACCUMULATOR P3 PRESSURE LEVEL HYDRAULIC FLUID TO ONE OF SAID LOW PRESSURE PISTON FACES IN RESPONSE TO A PRESSURE SENSING MEANS DOWNSTREAM OF SAID ORIFICE DURING THE RECOMPRESSION STROKE OF ONE OF SAID LOW PRESSURE PISTON FACES.