Accumulator charging system

Claim 1

IN A COMBINATION POWER STEERING-POWER BRAKING SYSTEM, AND THE LIKE: A HYDRAULIC PUMP, AN OPEN CENTER POWER STEERING VALVE SUPPLIED WITH PRESSURE FROM SAID PUMP AND HAVING A DISCHARGE FOR EXHAUSTING FLUID, AN ACCUMULATOR FOR STORING PRESSURE FLUID, AND AN ACCUMULATOR CHARGING VALVE HAVING A LONGITUDINALLY EXTENDING CHAMBER HAVING AN INLET PORT COMMUNICATING WITH SAID DISCHARGE OF SAID POWER STEERING VALVE, SAID LONGITUDINALLY EXTENDING CHAMBER HAVING A FIRST VALVE SEAT POSITIONED ON ONE SIDE OF SAID INLET PORT AND FACING AWAY FROM SAID INLET PORT, SAID VALVE SEAT COMMUNICATING TO LOW PRESSURE, A FIRST POPPET MEMBER FOR CLOSING OFF SAID FIRST VALVE SEAT, FIRST MEANS BIASING SAID POPPET WITH GENERALLY PREDETERMINED FORCE TO PROVIDE A PREDETERMINED BACK PRESSURE ON SAID INLET PORT, A MOVABLE WALL ACROSS SAID LONGITUDINAL CHAMBER AND POSITIONED ON THE OPPOSITE SIDE OF SAID INLET PORT FROM SAID VALVE SEAT, SAID MOVABLE WALL HAVING A PORTION WHICH ENGAGES SAID FIRST POPPET MEMBER AND WHICH MOVES SAID FIRST POPPET MEMBER OFF OF ITS SEAT WHEN MOVED TOWARD SAID VALVE SEAT, MEANS COMMUNICATING SAID DISCHARGE OF SAID POWER STEERING VALVE TO SAID ACCUMULATOR, SAID MEANS INCLUDING A CHECK VALVE FOR PREVENTING RETURN FLOW FROM SAID ACCUMULATOR, AND MEANS COMMUNICATING PRESSURE FROM SAID ACCUMULATOR TO THE SIDE OF SAID MOVABLE WALL OPPOSITE OF SAID FIRST VALVE SEAT, AND WHEREBY SIMPLE STRUCTURE RESPONSIVE TO ACCUMULATOR PRESSURE IS PROVIDED FOR SIMULTANEOUSLY REGULATING RETURN AND ACCUMULATOR FLOWS.