Apparatus for controlling discharge of material from a railroad hopper car
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United States of America Patent
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Jul 16, 2013
Grant Date -
Aug 23, 2012
app pub date -
Feb 17, 2011
filing date -
Feb 17, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for controlling the discharge of materials from a railcar having a hopper carried on a mobile frame. The hopper defines a longitudinally disposed discharge opening. The railcar has a door pivotally mounted for movement between an open position and a closed position relative to the discharge opening. The apparatus for controlling the discharge of materials from the railcar includes an operating shaft and a drive operably coupled between the door and the operating shaft for causing the door to move from the closed position toward the open position in response to rotation of the operating shaft. The drive also includes a lost motion connection for protecting the operating shaft as the door freely pivots toward the open position during collapsing movement of the lost motion connection and after the operating shaft has been rotated a predetermined amount to open the door.
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