Railroad vehicle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 21, 1983
Grant Date -
N/A
app pub date -
Apr 30, 1981
filing date -
Apr 30, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A closed railroad hopper car for solid commodities is loaded through hatches at its top. A pivoted lid or cover on each hatch is held shut by a single quick-acting cam lever. A catch prevents pressure in the car from throwing the hatch cover open when the tension from the cam lever is released. The hatch cover cannot be opened until after the cam lever is moved transversely out of contact with the catch.
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