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Safety device for overhead crane trolleys, has electromagnets whose cores are magnetized permanently, and trolley is held permanently and safely at carrier plate, without requirement of further energy for magnetization
Safety device for overhead crane trolleys, has electromagnets whose cores are magnetized permanently, and trolley is held permanently and safely at carrier plate, without requirement of further energy for magnetization
The safety device has electromagnets whose cores are magnetized permanently. The electrically magnetized permanent magnet cores are excited once for a short period. The trolley is held permanently and safely at a carrier plate, without requirement of further energy for magnetization.
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