Pneumatic shock absorber

Claim 1

A PNEUMATIC SHOCK ABSORBER ADAPTED TO INTERCONNECT A PAIR OF MEMBERS TENDING TO MOVE WITH RESPECT TO EACH OTHER UNDER THE INFLUENCE OF A FORCE COMPRISING, IN COMBINATION, A CYLINDER ADAPTED TO BE CONNECTED TO ONE OF SAID MEMBERS AND HAVING A FIRST CLOSED END AND A SECOND CLOSED END OPPOSITE SAID FIRST CLOSED END; A PISTON RECIPROCABLE IN SAID CYLINDER AND DIVIDING THE LATTER INTO A FIRST PRESSURE CHAMBER BETWEEN SAID PISTON AND SAID FIRST CLOSED END OF SAID CYLINDER AND A SECOND PRESSURE CHAMBER BETWEEN SAID PISTON AND SAID SECOND CLOSED END OF SAID CYLINDER; PISTON ROD MEANS FIXED TO SAID PISTON AND EXTENDING AT LEAST THROUGH ONE OF SAID CLOSED ENDS IN SEALED RELATIONSHIP THERETO AND BEING ADAPTED TO BE CONNECTED TO THE OTHER OF SAID MEMBERS; MEANS COMMUNICATING THROUGH SAID FIRST CLOSED END OF SAID CYLINDER WITH SAID FIRST PRESSURE CHAMBER FOR SUPPLYING COMPRESSED AIR THEREINTO WHILE PREVENTING FLOW OF COMPRESSED AIR THROUGH SAID MEANS OUT OF SAID FIRST PRESSURE CHAMBER SO AS TO MOVE SAID PISTON AGAINST SAID FORCE AWAY FROM SAID FIRST TOWARD SAID SECOND CLOSED END OF SAID CYLINDER SO THAT AIR IN SAID SECOND PRESSURE CHAMBER WILL BE COMPRESSED UNTIL SAID PISTON REACHES A NORMAL OPERATING POSITION IN WHICH SAID FORCE IS COUNTERBALANCED BY A FORCE PRODUCED BY THE PRESSURE DIFFERENCE BETWEEN SAID FIRST AND SECOND PRESSURE CHAMBERS; AND PASSAGE MEANS FORMED IN SAID PISTON ROD MEANS FOR PROVIDING COMMUNICATION BETWEEN SAID PRESSURE CHAMBERS WHEN SAID PISTON MOVES FROM SAID NORMAL OPERATING POSITION TOWARD SAID SECOND CLOSED END AND FOR PROVIDING COMMUNICATION BETWEEN SAID SECOND PRESSURE CHAMBER AND THE OUTER ATMOSPHERE WHEN SAID PISTON MOVES FROM SAID NORMAL OPERATING POSITION TOWARD SAID FIRST CLOSED END.