Fluid pressure energy translating devices

Claim 1

A FLUID ENERGY TRANSLATING DEVICE HAVING A ZONE OF HIGH PRESSURE AND A ZONE OF LOW PRESSURE, AN INLET AND AN OUTLET FOR SAID ZONE OF HIGH PRESSURE AND ZONE OF LOW PRESSURE, SAID DEVICE INCLUDING A HOUSING, ROTARY TRANSLATING MEANS, A STATOR ENCOMPASSING SAID TRANSLATING MEANS IN SAID HOUSING, A CHEEK PLATE WHICH IS MOVABLE IN SAID HOUSING WITH RESPECT TO SAID STATOR AND SAID TRANSLATING MEANS IN A DIRECTION PARALLEL TO THE AXIS OF SAID TRANSLATING MEANS, WALL MEANS DEFINING A PRESSURE CHAMBER ON THE SIDE OF SAID CHEEK PLATE WHICH IS OPPOSITE TO SAID TRANSLATING MEANS, SAID CHEEK PLATE FORMING ONE WALL OF SAID CHAMBER, FLUID UNDER PRESSURE IN SAID CHAMBER URGING SAID CHEEK PLATE TOWARD SAID STATOR AND TRANSLATING MEANS, A RESTRICTED OUTLET CONSTANTLY OPEN AT ALL TIMES COMMUNICATING BETWEEN SAID CHAMBER AND SAID ZONE OF LOW PRESSURE, SAID RESTRICTED OUTLET BEING OF SUCH CONFIGURATION AS TO NORMALLY MAINTAIN THE PRESSURE IN SAID CHAMBER INTERMEDIATE THE LOW PRESSURE AND THE HIGH PRESSURE AND SUFFICIENT TO OVERBALANCE SAID CHEEK PLATE AXIALLY TOWARD SAID ROTARY TRANSLATING MEANS AND SAID STATOR, A FLUID PASSAGE COMMUNICATING BETWEEN SAID ZONE OF HIGH PRESSURE AND SAID CHAMBER, AND VALVE MEANS IN SAID PASSAGE CONTROLLING THE FLOW OF FLUID FROM SAID ZONE OF HIGH PRESSURE TO SAID CHAMBER, SAID VALVE MEANS BEING OPERATED BY AXIAL MOVEMENT OF SAID CHEEK PLATE.