| 摘要 |
A Lifting device incorporating an arm and comprising at a free end of an end section (2, 2', 102, 102') of said arm a hook (3, 3', 3", 103, 103') comprising a nose (6, 6', 6", 106, 106') and a claw (7, 7', 7", 107, 107') together delimiting an opening (8, 8', 108, 108') designed to be crossed by a handling bar (4) fastened to a load (5) to be lifted, characterised in that the distance between said nose and said claw is variable, said nose and said claw being mobile relative to each other within said hook and connected to movement control means (10, 10', 10", 110, 110').
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