Shock absorber fluid flow velocity reducing means

Claim 1

AN HYDRAULIC DAMPER COMPRISING A CYLINDER, A PISTON SLIDABLE IN SAID CYLINDER AND DIVIDING IT INTO FIRST AND SECOND SPACES, A PISTON ROD AXIALLY ATTACHED TO SAID PISTON, AN END WALL ON SAID CYLINDER CLOSING SAID FIRST SPACE, A GLAND IN SAID END WALL, SAID PISTON ROD EXTENDING THROUGH SAID FIRST SPACE AND BEING SLIDABLE THROUGH SAID GLAND, AN ANNULAR CHAMBER IN THE PISTON, A PASSAGE IN THE PISTON ROD CONNECTING SAID CHAMBER WITH SAID FIRST SPACE IN THE CYLINDER, A ONE-WAY VALVE ALLOWING FLOW OF LIQUID UNDER PRESSURE FROM SAID ANNULAR CHAMBER TO SAID SECOND SPACE AND COMPRISING AT LEAST ONE ANNULAR RING-SHAPED SHIM COOPERATING WITH A SEATING IN SAID PISTON, MEANS FOR RIGIDLY HOLDING THE INNER EDGE OF SAID SHIM AGAINST AN ABUTMENT ON THE PISTON, RESILIENT MEANS COMPRISING A SPRING AND A THRUST WASHER ENGAGED BY THE SPRING AND URGING SAID SHIM INTO ENGAGEMENT WITH THE SEATING, AND AN ANNULAR FLANGE ON SAID WASHER SURROUNDING AND SPACED RADIALLY FROM THE PERIPHERY OF SAID SHIM AND EXTENDING AXIALLY TOWARDS THE PISTON WHEREBY ON MOVEMENT OF THE OUTER EDGE OF THE SHIM AWAY FROM THE SEATING LIQUID PASSING THROUGH THE VALVE IS CAUSED TO FLOW RADIALLY BETWEEN THE SHIM AND THE SEATING AND IS THEN DEFLECTED AXIALLY BY SAID FLANGE AND ITS VELOCITY OF FLOW IS REDUCED.