Hollow sleeper
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United States of America Patent
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Sep 27, 2011
Grant Date -
May 14, 2009
app pub date -
May 2, 2007
filing date -
May 10, 2006
priority date (Note) -
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Abstract
In the case of a hollow sleeper (1) for adjusting devices of switch blades of railway points, movable common crossings or cable crossings in any desired sections of track and points, formed as an upwardly open hollow sleeper profile with a planar sleeper underside (2), for fitting in a track skeleton, wherein the cross-sectional width and height are made to match a normal concrete, wooden or steel sleeper, the positional stability on ballast can be improved if the sleeper underside (2) of the hollow sleeper (1) is formed with at least one sunken, downwardly open chamber (5).
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