FIELD: transport.
SUBSTANCE: carne jib with lengthwise axis false contour line extending in crosswise plane, approximately, in mirror symmetry with mirror axis s. Contour line cross mirror axis s at first and second points S1, S2, and, in direction of second points S2 ahead of, at least, last third of distance D between said first and second points S1, S2, it converges. Contour line convergence extends to second point S2 to terminate at rounding 1 at mirror axis s.
EFFECT: application of thinner sheet metal.
14 cl, 11 dwg
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