Intermodal rail vehicle to form a train
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United States of America Patent
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Jun 25, 2013
Grant Date -
Sep 30, 2010
app pub date -
Dec 11, 2008
filing date -
Dec 20, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Refinements and improvements in intermodal rail vehicles for making up a train of highway trailers are shown. The improved intermodal vehicle has a one-piece upper frame assembly (26) with a horizontal load carrying surface below the ends of a drawbar for connecting the trailers. Each highway trailer has a coupler socket assembly at both its front and rear into which the drawbar enters and is connected to the intermodal vehicle by a vertical coupling pin projecting upward from the horizontal load carrying surface. The upper frame is supported from dual steerable lower frames (28) by primary air springs (90). A backup suspension system is provided so as to support the upper frame in the event of failure of the primary air springs. A transition rail vehicle for adapting the unit train of trailers is provided, incorporating the necessary features of the intermediate intermodal vehicles heretofore described.
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