Span bolster assembly
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United States of America Patent
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Feb 20, 1990
Grant Date -
N/A
app pub date -
Dec 1, 1988
filing date -
Dec 1, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A span bolster, for carrying a heavy load of a railroad car body and distributing the load to two four wheel two axle railroad bogies or trucks, is fabricated from steel plate and has top and bottom cover plates, top and bottom reinforcement doubler plates, longitudinal spaced apart webs separating the cover plates, body bolsters at each end and a central truck bolster, all formed of metal plate joined together by welding with all critical welds being full penetration welds, and with the span bolster being stress relieved after fabrication.
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