| 摘要 |
PROBLEM TO BE SOLVED: To provide a hanging metal fitting for safely performing hooking/unhooking work without needing assistance of human power in unloading work of construction materials or the like. SOLUTION: A hanging metal fitting itself has extensibility, and a metal bar 6 is slid to be extended/contracted by a spring 3 provided within a metal fitting body 4. COPYRIGHT: (C)2006,JPO&NCIPI
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