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Derrick crane










Image Number 3 for United States Patent #7441670.

The invention relates to a derrick crane having a main boom and having a derrick boom which are connected to one another by a stay cable to guy the main boom, having an auxiliary tip adjoining the main boom and a stay cable for its guying. In accordance with the invention, the stay cable of the auxiliary tip engages at the auxiliary tip at the one end and at the stay cable of the main boom at the other end.








 
 
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