Apparatus (40) includes base (42), guide arm (44) pivotable relative to base (42), guide arm (44) movable between a raised and lowered position. Tension linkage (50) has distal end (52) extending away from base (42), tension linkage (50) supported by guide arm (44) when arm (44) is in the raised position. Tension linkage guide (54) is disposed on guide arm (44), tension linkage guide (54) movable along tension linkage (50) as guide arm (44) moves between raised and lowered positions. Lid hook (56) is connected to distal end (52) of tension linkage (50). When lid hook (56) is engaged with a cargo vessel lid, tension linkage (50) forms first tension angle (84) and second tension angle (86) when guide arm (44) is in the raised and lowered positions respectively, second tension angle (86) being less than first tension angle (84).
Cargo vessel lid lifting system
2020-07-02
Patent
Electronic Resource
English