Motor control valve with flow restrictor means

Claim 1

IN A VALVE ASSEMBLY FOR CONTROLLING ACTUATION OF A FLUID MOTOR, THE COMBINATION OF A HOUSING HAVING AN INLET PORT FOR CONNECTION WITH A FLUID PRESSURE SOURCE, A RETURN PORT FOR CONNECTION WITH A FLUID RESERVOIR, AND AT LEAST ONE MOTOR PORT FOR CONNECTION WITH A FLUID MOTOR; A VALVE MEMBER MOVABLE IN SAID HOUSING FROM AN INACTIVE POSITION TO EITHER OF TWO OPERATING POSITIONS WHEREAT SAID MOTOR PORT IS SELECTIVELY COMMUNICATED WITH SAID INLET PORT AND SAID RETURN PORT VIA A PASSAGE IN SAID HOUSING EXTENDING FROM SAID VALVE MEMBER TO SAID MOTOR PORT; A CHECK VALVE IN SAID PASSAGE OPENED BY FLOW OF FLUID UNDER PRESSURE IN SAID PASSAGE FROM SAID VALVE MEMBER TO SAID MOTOR PORT; A FLUID PRESSURE ACTUATED MEMBER IN SAID HOUSING MOVED BY FLUID UNDER PRESSURE ACTING THEREON TO OPEN SAID CHECK VALVE TO PERMIT FLOW OF FLUID IN SAID PASSAGE IN THE OPPOSITE DIRECTION FROM SAID MOTOR PORT TO SAID VALVE MEMBER; AND TWO-WAY FLOW RESISTOR MEANS IN SAID PASSAGE WHICH DEFINING THEREWITH FIRST AND SECOND RESTRICTED PASSAGES WHICH RESPECTIVELY RESTRICT FLOW OF FLUID IN OPPOSITE DIRECTIONS ONLY ACCORDING TO THE RELATIVE FLOW CAPACITIES OF SAID FIRST AND SECOND PASSAGES, SAID RESTRICTOR MEANS COMPRRISING A PLATE-LIKE MEANS MOVABLE IN SAID PASSAGE WITH ITS OPPOSITE END FACES ALTERNATELY ENGAGING SPACED APART SEATS IN SAID PASSAGE, SAID END FACES HAVING GROOVES THEREIN CONSTITUTING THE RESPECTIE FIRST AND SECOND PASSAGE WHEN ENGAGED WITH THE RESPECTIVE SEATS.