Patent ID: 8701565

Claim:
A system, comprising: a first door assembly operable to at least partially cover a top hatch of a rail car; an actuator; a first common linkage coupled to the actuator and operable to reciprocally move in a longitudinal direction relative to the actuator; a first secondary linkage coupled to the first common linkage and coupled to an exterior surface of the first door assembly, wherein the first secondary linkage cooperates with the first common linkage to move the first door assembly between an open position and a closed position over the top hatch of the rail car, in response to actuation of the actuator; a compressed air driven hydraulic motor located adjacent a bottom surface of the rail car and configured to receive compressed air through a train line extending from a reservoir that charges a brake system of the rail car; a vent disposed within an interior of the rail car and configured to allow airflow from outside the rail car to alleviate vacuum pressure during discharge; and hydraulic hosing coupling the motor and the actuator and disposed at least partially within the air vent.