Patent ID: 8056485

Claim:
A rail car door closer system mounted between railroad tracks and over an unloading space for unloading bulk materials from rail cars with hopper doors at the bottom thereof, said rail car door closer system comprising: an elongated tent frame structure between said railroad tracks, said elongated tent frame structure being of a configuration to deflect said bulk materials; linear actuator protected by said elongated tent frame structure and mounted thereunder, axles rotatably connected to said linear actuator and substantially perpendicular thereto, said axles rotating upon operating of said linear actuator, said axles are mounted substantially perpendicular to an elongated axis of said elongated tent frame structure, at least one end of said axles extending from an underside of and through said elongated tent frame structure; and cam closure attached to said at least one end of said axles; a relaxed position of said cam closure being when said cam closure is down, a raised position of said cam closure being when said cam closure is raised by said linear actuator rotating said axles and said cam closure presses against said hopper door to cause closing thereof.