Fluid operated booster

Claim 1

IN A FLUID OPERATED BOOSTER FOR USE WITH A FLUID OPERATED APPARATUS AND ANOTHER APPARATUS, THE COMBINATION OF: (A) A HOUSING PROVIDING A CYLINDER HAVING INPUT AND OUTPUT ENDS AND HAVING THEREIN AN INLET PORT CONNECTIBLE TO A SOURCE OF OPERATING FLUID UNDER PRESSURE, AN OUTLET PORT CONNECTIBLE TO SAID FLUID OPERATED APPARATUS TO DELIVER OPERATING FLUID UNDER PRESSURE THERETO, AND A RESERVOIR PORT CONNECTIBLE TO A RESERVIOR; (B) CONCENTRIC, RELATIVELY AXIALLY MOVABLE, INPUT AND OUTPUT PLUNGERS AXIALLY MOVABLE IN SAID CYLINDER AND PROVIDED WITH PASSAGE MEANS INTERCOINNECTING SAID INLET AND OUTLET PORTS IN FLUID COMMUNICATION; (C) SAID OUTPUT PLUNGER HAVING AN ANNULAR ACTUATING SURFACE WHICH FACES AXIALLY AWAY FROM SAID OUTPUT END OF SAID CYLINDER; (D) SAID INPUT PLUNGER HAVING AN ANNULAR REACTION SURFACE WHICH FACES AXIALLY AWAY FROM SAID INPUT END OF SAID CYLINDER; (E) MOVABLE INPUT MEANS ADJACENT SAID INPUT END OF SAID CYLINDER FOR AXIALLY MOVING SAID INPUT PLUNGER RELATIVE TO SAID OUTPUT PLUNGER; (F) RESILIENT CONNECTING MEANS YIELDABLY INTERCONNECTING SAID INPUT MEANS AND SAID INPUT PLUNGER; (G) MOVABLE OUTPUT MEANS ADJACENT AND OUTPUT END OF SAID CYLINDER AND CONNECTED TO SAID OUTPUT PLUNGER AND CONNECTIBLE TO SAID OTHER APPARATUS; (B) MEANS FOR BIASING SAID INPUT AND OUTPUT PLUNGERS AXIALLY TOWARD SAID INPUT END OF SAID CYLINDERS; AND (I) VALVE MEANS EMBODIDED IN SAID INPUT AND OUTPUT PLUNGERS AND RESPONSIVE TO RELATIVE AXIAL MOVEMENT THEREOF FOR SELECTIVELY CONNECTING SAID ACTUATING AND REACTION SURFACES IN FLUID COMMUNCATION WITH SAID INLET AND RESERVOIR PORTS, AND FOR CONTROLLING THE RESTRICTION TO FLOW OF OPERATING FLUID FROM SAID INLET PORT THROUGH SAID PASSAGE MEANS TO SAID OUTLET PORT, SAID INPUT MEANS AND SAID INPUT PLUNGER BEING TELESCOPICALLY INTERCONNECTED AND SAID RESILIENT CONNECTING MEANS INCLUDING A COMPRESSION SPRING BETWEEN AND SEATED ON SAID INPUT MEANS AND SAID INPUT PLUNGER.