Elevator – industrial lift truck – or stationary lift for vehicle – With monitoring – signalling – and indicating means – Monitors operational parameter
Reexamination Certificate
2007-09-11
2007-09-11
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
With monitoring, signalling, and indicating means
Monitors operational parameter
C454S068000
Reexamination Certificate
active
11204995
ABSTRACT:
In an elevator system having an elevator control unit and an atmospheric pressure control unit, an elevator operation state monitor monitors the operation state of the elevator control unit, and an atmospheric pressure control state monitor monitors the operation state of the atmospheric pressure control unit. When a trouble in the elevator operation or atmospheric pressure control is detected, a minor/major trouble judgment unit judges the seriousness level of the trouble, and a rescue mode selector selects a rescue mode. In this case, when the atmospheric pressure control is abnormal, it is judged a major trouble, and a mode to ensure ventilation in an elevator car is selected. This enhances the safety in a highly airtight elevator such as a superhigh-speed high-rise elevator.
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Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Salata Jonathan
Toshiba Elevator Kabushiki Kaisha
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