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WO2020140752A1
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Roller guide shoe
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CN111824890A
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Emergency protection system for elevator car safety
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CN111824891A
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Speed limiter
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CN111824892A
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Lifting device with lifting force
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CN111824893A
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Roller speed measuring device
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CN111824883A
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Diagnosis maintenance system based on elevator car
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CN111824882A
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System based on car safety
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CN111824895A
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Accidental car movement protection device
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CN111654310A
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Relay device for connecting safety device with elevator control system
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CN111457047A
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Elevator buffer
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CN111392546A
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Roller guide shoe
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CN111392542A
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Bidirectional safety tongs
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CN111268533A
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Roller type rail clamping device
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CN111099478A
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Guide rail
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CN110271936A
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A kind of limiter of speed Remote triggering resetting-mechanism
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CN110817629A
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Elevator diagnosis system
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CN110697536A
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Safety brake device
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CN110552954A
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roller wheel
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CN109928283A
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The trigger device of steel wire braking
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CN109928284A
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Detection device for accidental movement of elevator cage and hypervelocity
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