Hopper railcar with automatic individual door system

Railway rolling stock – Special car bodies – Dumping

Reexamination Certificate

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Reexamination Certificate

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07832340

ABSTRACT:
The door operating system of the present invention can be applied to new railcar or retrofitted to existing railcar designs. The hopper car will have a pair of doors on opposed sides of the center sill which are connected through a door spreader. The pneumatic, individual door operating system is connected to the door spreader through an adjustable spreader fulcrum in which the sliding adjustment may add in a proper connection force or tension between the door operating system and the individual doors.

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patent: 6405658 (2002-06-01), Taylor

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