METHOD FOR CONTROLLING A CRANE
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United States of America Patent
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Issued Date -
Jun 2, 2011
app pub date -
Aug 21, 2008
filing date -
Aug 24, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for controlling a crane includes controlling a rope part connected to a hook of the crane with a friction-operated driving wheel, extra rope being coiled into a plurality of layers onto a storage reel. In the method, two machineries are used, of which the first is intended for the driving wheel and the other for the storage reel, one machinery being controlled with a speed instruction and the other machinery with a torque instruction.
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