Dual stage railroad hopper car door actuating mechanism
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United States of America Patent
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-
Mar 6, 2012
Grant Date -
Oct 7, 2010
app pub date -
Feb 19, 2010
filing date -
Apr 6, 2009
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A mechanism for controlling opening of doors on a hopper car underside. The mechanism includes a pair of stationary hook assemblies located outboard of a discharge opening and having a proximal end affixed to the hopper car and a distal free end. Each hook assembly includes a locking cavity bounded by a cam locking surface and a distal slide surface. Included also is a pair of locking cam assemblies having an upper and lower cam surface matable with the hook cam locking assembly and having a slot. An elongate member has ends affixed to the pair of locking cam assemblies and extends through each of the annular end bearings. A pair of annular end bearings is disposed adjacent to the locking cam assemblies and each affixed to a door.
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