Vibration damping shock absorbers

Claim 1

A HYDRO-PNEUMATIC SHOCK ABSORBER COMPRISING MEANS FORMING A CYLINDRICAL OIL-CONTAINING WORKING SPACE, A MAIN PISTON MOVABLY MOUNTED IN SAID WORKING SPACE, AND A CLOSED EQUALIZING SPACE IN THE WORKING SPACE CONTAINING WITH GAS UNDER PRESSURE ABOVE THE OIL, A SEPARATING BODY IN THE AREA OF THE SEPARATING SURFACE BETWEEN THE OIL AND THE GAS UNDER PRESSURE, SAID SEPARATING BODY COMPRISING A SOLID SUBSTANTIALLY NON-POROUS MEMBER EXTENDING SUBSTANTIALLY ACROSS THE UNOBSTRUCTED INTERIOR OF THE EQUALIZING SPACE AND HAVING BETWEEN ITS OUTER EDGE AND THE INTERIOR OF THE WALL OF THE EQUALIZING SPACE AN OPEN ANNULAR GAP OF CAPILLARY DIMENSION, SAID SEPARATING BODY BEING URGED IN ONE DIRECTION, SAID WORKING SPACE FORMING MEANS AND SEPARATING BODY HAVING COOPERATING MEANS THEREIN LOCATED SUBSTANTIALLY AT UPPER LEVEL OF THE OIL IN THE WORKING SPACE TO LIMIT THE MOVEMENT OF THE SEPARATING BODY IN THE DIRECTION IN WHICH IT IS URGED.