Rail car door closer
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United States of America Patent
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-
Nov 15, 2011
Grant Date -
Jan 14, 2010
app pub date -
Jul 8, 2009
filing date -
Jul 9, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A rail car door closer is shown for hopper type rail cars used to carry bulk commodities or materials. Cylinders provide horizontal motion to rotate an axle on which cam closers are attached thereto. The cam closers operate between a relaxed position (down position) and a raised position (up position). During rotation of the cam closers from the relaxed position to the raised position, the cam closers push hopper doors under the rail car up to a latched position. Individual hopper doors can be closed, or multiple doors can be simultaneously closed, depending on the preference of the operator. The cylinders are protected from falling bulk commodities by an elongated tent frame structure.
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