Cushioned-stroke reciprocatory hydraulic motor

Claim 1

A CUSHIONED-STROKE RECIPROCATORY HYDRAULIC MOTOR, COMPRISING A CYLINDER HAVING A TUBULAR CYLINDER BARREL WITH A CYLINDER BORE THEREIN. A PISTON RECIPROCABLY MOUNTED IN SAID CYLINDER BARREL, SAID PISTON INCLUDING A PISTON ROD AND A PISTON HEAD ON SAID PISTON ROD ENGAGEABLE WITH SAID CYLINDER BORE, MEANS FOR ADMITTING HYDRAULIC PRESSURE FLUID TO SAID CYLINDER ON ONE SIDE OF SAID PISTON HEAD TO MOVE SAID PISTON ALONG SAID CYLINDER, AND MEANS DISPOSED NEAR ONE END OF SAID CYLINDER BARREL FOR GRADUALLY RELEASING HYDRAULIC FLUID FROM SAID CYLINDER BARREL ON THE OPPOSITE SIDE OF SAID PISTON HEAD, SAID FLUID-RELEASING MEANS INCLUDING A FIRST SERIES OF BIDIRECTIONAL FLUID FLOW OUTLET PORTS IN SAID CYLINDER BARREL ARRANGED IN AXIALLY-SPACED LONGITUDINALLY-DISPOSED RELATIONSHIP IN SAID CYLINDER BARREL AND CLOSED SEQUENTIALLY BY SAID PISTON HEAD IN RESPONSE TO THE TRAVEL OF SAID PISTON HEAD ALONG SAID CYLINDER BORE IN ONE DIRECTION. SAID FLUID-RELEASING MEANS ALSO INCLUDING A UNIDIRECTIONAL FLUID RELEASE VALVE DISPOSED NEAR SAID CYLINDER FLUID OUTLET PORTS AND OPENING OUTWARDLY FROM SAID CYLINDER BARREL INTO SAID CYLINDER BORE IN BYPASSING RELATIONSHIP TO SAID OUTLET PORTS.