Loading and unloading crane and method of operation therefor

Details Loading and unloading crane and method of operation therefor Loading and unloading crane and method of operation therefor

1984-10-30

1986-02-11

Blix, Trygve M.

Traversing hoists

Having counterweight or counterbalancing means

Counterweight movable relative to load support

B66C 2352

Patent

active

045694532

ABSTRACT:
A crane structure mounted on a transport vehicle, preferably a marine vessel, is disclosed. The crane structure includes a gantry structure mounted on a vertical tower structure and having boom portions protruding from the tower structure. Preferably, the boom portions may be pivotally lowered from their operating positions and the tower structure may be rotated in a horizontal plane, thereby reducing the overall dimensions of the crane structure to allow transport under overhead obstructions and through narrow passageways.

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