Vacuum and gravity discharge hopper car gate
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United States of America Patent
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Feb 12, 2013
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N/A
app pub date -
Dec 20, 2010
filing date -
Dec 20, 2010
priority date (Note) -
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Abstract
A hopper car gate having a frame, a moveable door supported by the frame, and a set of walls coupled with the frame. The walls have a lower edge partially spaced above the door, and are positioned to define a vacuum chamber between the walls and the frame. The vacuum chamber is in fluid communication with a vacuum opening formed in the frame. A vacuum adapter configured for mounting on a hopper car gate. The adapter has first and second sets of walls with a vacuum chamber between the sets of walls. The vacuum chamber is in fluid communication with a vacuum opening in the first set of walls.
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