Vented hatch coaming
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 14, 2003
Issued Date -
N/A
app pub date -
Apr 6, 2001
filing date -
Feb 29, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vented hatch coaming for a covered hopper car permits unloading without opening the hatch cover. The vented hatch includes an opening in the coaming for the passage of air. Preferably, a housing is positioned adjacent the ring opening to exclude contaminants and, where extraordinary sanitation is required, a filter element.
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