Apparatus for opening a grain door
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United States of America Patent
Stats
-
Oct 25, 1994
Grant Date -
N/A
app pub date -
May 11, 1993
filing date -
May 11, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An opener of the door of a gravity flow vehicle which allows a mechanical advantage in initially raising the door. After the material within the vehicle begins to flow and decrease the effort required to raise the door, the mechanical advantage is bypassed so that the door may be quickly raised and lowered.
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Family
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Cited Art Landscape
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