Volume compensation devices for hydraulic-pneumatic telescopic shock absorbers

Claim 1

IN A TELESCOPIC SHOCK ABSORBER USING FLUID MEDIUM, A CYLINDER, A PISTON WORKING AXIALLY IN SAID CYLINDER, A ROD ON SAID PISTON AXIAL TO SAID CYLINDER AND MOVING WITHIN SAID CYLINDER MEMBER, A FLEXIBLE COMPENSATION ELEMENT IN SAID CYLINDER, AN EXTENSION OF SAID FLEXIBLE COMPENSATION ELEMENT IN THE FORM OF A CYLINDER EXTENDING ALONG THE INNER WALL OF SAID CYLINDER, THE PERIPHERAL SURFACE OF SAID PISTON SLIDABLE WITHIN AND FLEXIBLY ENGAGING SAID CYLINDRICAL PORTION OF SAID FLEXIBLE COMPENSATION ELEMENT, A RIM OF SAID CYLINDRICAL PORTION OF SAID FLEXIBLE COMPENSATION ELEMENT FITTED AND SECURED TO THE WALL OF SAID CYLINDER ALONG WHICH SAID PISTON WORKS, A SECOND AND INVERTED PORTION OF SAID FLEXIBLE COMPENSATION ELEMENT BEING PREDISPOSED TO MOVE INVERSELY IN RELATION TO THE INNER SURFACE OF THE EXTENSION WHEREBY THE SECOND PORTION MOVES ACROSS THE CYLINDRICAL EXTENSION PORTION AND SAID EXTENSION REMAINS FIXED WITH RELATION TO SAID WALL, A VOLUME OF DAMPENING FLUID CONTAINED IN SAID CYLINDER IN CONTACT WITH SAID PISTON AND PISTON ROD AND A VOLUME OF GAS CONTAINED IN SAID CYLINDER AND SEPARATED FROM SAID VOLUME OF DAMPENING FLUID BY SAID FLEXIBLE COMPENSATION ELEMENT, SO CONSTRUCTED AND ARRANGED THAT SAID INVERSION OF SAID SECOND PORTION UPON SAID CYLINDRICAL EXTENSION PORTION COMPENSATES FOR DISPLACEMENT OF THE FLUID BY THE PISTON ROD UPON AXIAL MOVEMENT OF THE PISTON.