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AssigneeOtis Elevator Company
InventorsDirk Heinrich Tegtmeier, Herbert Karl Horbruegger, Michael Mann, Kristian Bernhard Wittjen
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Method for performing an elevator rescue run in an emergency situation, the elevator comprising and elevator car, a counter weight, a rope suspending the car and the counterweight, a drive motor, an emergency brake for stopping the car in an emergency situation, and a motor drive unit for supplying drive power to and for controlling the drive motor, having the following rescue run sequence steps: (a) operating the motor drive unit in a zero speed demand mode for holding the car at its present position; (b) lifting the brake, while holding the car in the zero speed demand mode; (c) determining the preferred movement direction of the car based on the power data as obtained by the motor drive unit; and (d) performing the rescue run in the direction of the determined preferred movement direction.
A method for performing an elevator rescue run in an emergency situation, the elevator comprising an elevator car, a counter weight, a rope suspending the car and the counterweight, a drive motor, an emergency break for stopping the car in an emergency situation, and a motor drive unit for supplying drive power to and for controlling the drive motor, comprising the steps of:
An elevator comprising:
Dependencies are inferred from the claim text.