Railborne mobile crane
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United States of America Patent
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-
Sep 25, 2001
Grant Date -
N/A
app pub date -
Nov 30, 1998
filing date -
Nov 28, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A railborne mobile crane mounted on a chassis with a superstructure, a counterweight and a boom which are arranged so as to be swivelable about a vertical axis of the superstructure. The superstructure is contoured so as to be within a prescribed clearance gauge of a section of track. The superstructure is outfitted with a device to compensate for superelevations of curved track sections. Longitudinal sides and a rear side of the superstructure are arranged so that, in every swiveling position, all contours of the superstructure lie within a defined safety area. The safety area is bounded on each of two sides of a longitudinal axis of the crane by an inclined plane which is inclined inward from the vertical, proceeding from a lower edge of the superstructure, by an angle of inclination at least corresponding to a maximum allowable angle of superelevation of the track.
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