Bridging mechanism for crossing railroad tracks with vertically moving pivot carriage for bridge plate
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United States of America Patent
Stats
-
Sep 22, 1992
Grant Date -
N/A
app pub date -
Oct 17, 1991
filing date -
Oct 17, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bridging mechanism, the bridge plate of which can be pivoted from a vertical rest position behind the tracks into a horizontal operating position in which the free end of the bridge plate rests upon a dock or platform. The pivot connection of the bridge plate is mounted on a vertical support structure of a travel mechanism that is disposed behind the tracks. To achieve a large span length of the bridging mechanism where low ceilings are present, the pivot connection of the bridge plate is mounted such that it can be raised and lowered on the support structure. When the bridge plate is swung up out of the working position and into the approximately vertical rest position, the pivot connection is lowered, and when the bridge plate is swung down from the approximately vertical rest position into the operating position, the pivot connection is lowered.
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