Hatch cover and locking structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 18, 1986
Grant Date -
N/A
app pub date -
Oct 10, 1984
filing date -
Oct 10, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The hatch of a lading container, such as the hopper of a covered hopper car, is sealed by a hatch cover having a locking arrangement which prevents the hatch cover from being blown open by pressure within the hopper when the locking arrangement is unlocked. An over-center locking arm has two spaced catches which co-act with two latches on a latching arrangement to selectively provide a sealed, a pressure blow-off, and a hatch open position. A rotative adjustment is provided to enable adjustment of the sealing pressure of the hatch cover on the hatch.
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