Regulating device including a distributor having double-acting knife-edges

Claim 1

A SERVO-VALVE COMPRISING A STATIONARY NOZZLE WHICH IS FED WITH PRESSURIZED FLUID TO PRODUCE A JET; A JET RECEIVER MEANS SPACED FROM THE NOZZLE AND DEFINING A PAIR OF PRESSURE CHAMBERS EACH HAVING A RECEIVING ORIFICE FACING THE NOZZLE, THE RECEIVING ORIFICES BEING ARRANGED SYMMETRICALLY TO THE NOZZLE AXIS; A JET DEFLECTOR DEVICE COMPRISING A DOUBLE-ACTING DEFLECTOR MEMBER HAVING TWO SHARP EDGES FACING EACH OTHER IN POSITION TO INTERCEPT THE JET BETWEEN THE NOZZLE AND SAID JET RECEIVER MEANS, A LEVER MEMBER EXTENDING SUBSTANTIALLY PARALLEL TO THE NOZZLE AXIS FOR SUPPORTING SAID DEFLECTOR MEMBER, SAID LEVER MEMBER BEING PIVOTALLY MOUNTED BY FRICTION-FREE PIVOTAL MEANS SPACED A DISTANCE FROM THE DEFLECTOR MEMBER, SAID PIVOTAL MEANS INCLUDING A DIAPHRAGM HAVING A PERIPHERAL CORRUGATION FORMED THEREIN, SAID DIAPHRAGM BEING FASTENDED TO A STATIONARY PART AROUND THE CONFIGURATION, AND MEANS ENGAGING THE LEVER MEMBER THROUGH A CENTRAL PORTION OF THE DIAPHRAGM, AND ACTUATING MEANS RESPONSIVE TO AN INPUT SIGNAL FOR PIVOTING THE SUPPORTING LEVER AND DEFLECTOR MEMBER AROUND SAID PIVOTAL MEANS TO DEFLECT THE JET SELECTIVELY TOWARDS EITHER OF SAID RECEIVING ORIFICES TO PRODUCE A PRESSURE DIFFERENTIAL OUTPUT SIGNAL BETWEEN THE CHAMBERS.