Top chord for open top hopper cars
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 20, 1989
Grant Date -
N/A
app pub date -
Dec 4, 1987
filing date -
Dec 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A new and useful top chord, and a new and useful container wall construction incorporating the top chord. The top chord has a tubular chord section and a special stepped stem integral with the tubular chord section. The stem has a relatively thick proximal portion connected with the tubular chord section and a relatively thinner distal portion extending from the thick portion. The thick proximal portion and the thinner distal portion co-operate to define a rectangular step having a predetermined thickness. The thickness of the step is designed so that the side wall can be closely sandwiched between the post and the thinner portion of the stem and the thick portion of the stem extends above the side wall and into facing relation with a portion of the post which extends above the side wall. The stem is bolted to the post and to the side wall with the thick portion bolted directly to the post and the thinner portion bolted to the post with the side wall sandwiched therebetween. Additionally, the tubular chord section has a depending lip designed to rest on a part of the post when the stem of the chord is bolted to the post. The foregoing structure is specifically designed to provide a secure and stable top chord that can resist the high, localized forces applied to gondola and open hopper-type railway cars during the unloading/shaking processes.
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