Rolling stock
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United States of America Patent
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Oct 25, 2016
Grant Date -
Jan 22, 2015
app pub date -
Feb 10, 2012
filing date -
Feb 10, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is rolling stock in which a center beam is formed of an upper plate part, a lower plate part, and a pair of side plate parts located on opposite sides of the upper plate part and the lower plate part into a rectangular tube cross-sectional shape. Each of the upper plate part and the lower plate part is formed by placing a plurality of plate members on each other, at least an outermost one of the plate members is formed in a flat plate shape, and a ridge portion projecting to a tube inner side is formed in a center portion, in the width direction, of the plate member located on an inner side such that the ridge portion is continuous in a longitudinal direction of the center beam, and which has an underframe capable of preventing the upper plate part and the lower plate part from buckling.
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