Cylinder with piston cushioning feature

Claim 1

IN A POWER CYLINDER DEVICE, THE COMBINATION COMPRISING A CYLINDER, RESPECTIVE PRESSURE HEADS FOR CLOSING THE OPPOSITE ENDS OF SAID CYLINDER, A PISTON COOPERATING WITH SAID CYLINDER AND SAID PRESSURE HEADS FOR FORMING TWO RESPECTIVE CHAMBERS THEREIN ON OPPOSITE SIDES OF THE PISTON, SAID PISTON BEING MOVABLE RESPONSIVELY TO PRESSURE OF FLUID ADMITTED INTO ONE OF SAID CHAMBERS ADJACENT THE RESPECTIVE PRESSURE HEAD IN A DIRECTION TOWARD THE OTHER PRESSURE HEAD, SAID OTHER PRESSURE HEAD INCLUDING A PASSAGEWAY PROVIDING FOR EXHAUST FLOW OF FLUID FROM THE OTHER CHAMBER ADJACENT THERETO AT AN UNRESTRICTED RATE DURING A PREDETERMINED DISTANCE OF INITIAL PISTON MOVEMENT, A PISTON-CUSHIONING MEMBER COAXIALLY MOVABLE IN SAID CYLINDER IN SEALING RELATION THEREWITH BETWEEN SAID PISTON AND SAID OTHER HEAD, AND A SPRING INTERPOSED BETWEEN SAID PISTON-CUSHIONING MEMBER AND THE PISTON FOR TRANSMITTING MOTIVE FORCE FORM THE PISTON TO THE PISTONCUSHIONING MEMBER FOR MOVING THE LATTER TO AN ABUTTING POSITION AGAINST SAID OTHER PRESSURE HEAD UPON COMPLETION OF SAID PREDETERMINED DISTANCE OF INITIAL PISTON MOVEMENT, SAID PISTON-CUSHIONING MEMBER INCLUDING PASSAGE MEANS EFFECTIVE WHEN SAID PISTON-CUSHIONING MEMBER IS IN SAID ABUTTING POSITION FOR LIMITING EXHAUST FLOW OF FLUID TRAPPED IN SAID OTHER CHAMBER BETWEEN SAID PISTON AND SAID PISTON-CUSHIONING MEMBER TO A RESTRICTED RATE.