Trackside railcar door opener and closer

Railway rolling stock – Special car bodies – Dumping

Reexamination Certificate

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Reexamination Certificate

active

11322783

ABSTRACT:
An automated and semi-automated trackside railcar door opener and closer for use with railcar doors located on or near the bottom of the railcar including a tool carriage, a controller and a support substantially parallel to a railroad track. A railcar door opener includes an alignment sensor for aligning the opening tool with a railcar door latch and a railcar door latch opener for releasing the railcar door latch. A railcar door closer includes at least two closer arms configured to close railcar doors on or near the bottom of a railcar. The opening and closing tools are each coupled to the tool carriage, and the tool carriage is moveably attached to the support. A controller controls movement and operation of the tool carriage, opening tool and closing tool.

REFERENCES:
patent: 3965760 (1976-06-01), Etheredge, Jr.
patent: 4011956 (1977-03-01), Green et al.
patent: 4120412 (1978-10-01), Miller et al.
patent: 4508037 (1985-04-01), Rousseau
patent: 4522545 (1985-06-01), Peckham
patent: 4629386 (1986-12-01), Tullos
patent: 4843974 (1989-07-01), Ritter et al.
patent: 5299508 (1994-04-01), Connelly
patent: 5419262 (1995-05-01), Turpin, Sr.
patent: 6886473 (2005-05-01), Marchiori et al.
patent: 7063022 (2006-06-01), Marchiori et al.

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