Secondary seal for the pneumatic discharge nozzle of a covered hopper car
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United States of America Patent
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Apr 14, 1998
Grant Date -
N/A
app pub date -
Aug 30, 1995
filing date -
Aug 30, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A secondary seal in the form of a plug member insertable in the open end of a pneumatic discharge nozzle of a covered hopper car carrying granular material, such as plastic pellets, wherein the plug member includes means for maintaining the pellets in spaced relation to the open end of the nozzle to prevent spillage when the plug member is removed, and having retaining means connecting the plug member to the nozzle when it is removed from the open end of the nozzle.
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