Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B66
HOISTING; LIFTING; HAULING
Load children
B66B
ELEVATORS; ESCALATORS OR MOVING WALKWAYS
Load children
5/00
Applications of checking, fault-correcting, or safety devices in elevators
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B66B5/02
responsive to abnormal operating conditions
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B66B5/028
Safety devices separate from control system in case of power failure, for hydraulical lifts, e.g. braking the hydraulic jack
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