Railroad car having cold formed center sill
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United States of America Patent
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-
Jan 20, 2009
Grant Date -
N/A
app pub date -
Sep 18, 2000
filing date -
Sep 11, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A railroad car having a center sill formed by cold rolling a flat sheet of steel into a rectangular configuration. One of the embodiments includes strengthening flanges and another includes ribs. The cold formed center sill may be formed of a single cold formed section or a pair of cold formed sections joined by a single longitudinal weld seam.
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Cited Art Landscape
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