Lattice mast crane with a derrick boom
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United States of America Patent
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May 19, 2009
Grant Date -
Mar 13, 2008
app pub date -
Jul 27, 2007
filing date -
Jul 28, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a lattice mast crane having a traveling gear, a swiveling crown arranged on the traveling gear and a revolving deck which is rotatable via the swiveling crown and on which a main boom and a derrick boom are arranged and having a ballast box, with the revolving deck being mounted on the swiveling crown via a spacer tube and with the guide frame forming the track of the derrick ballast projecting outwardly beyond the ballast box.
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