Elevator door system

Elevator – industrial lift truck – or stationary lift for vehicle – With barrier for regulating access to load support – Includes motor or motor driven linkage for shifting barrier

Reexamination Certificate

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Details

C049S360000

Reexamination Certificate

active

09220462

ABSTRACT:
An elevator door system includes an elevator car having a front face defining a door opening. At least one elevator door is coupled to the front face of the elevator car for movement between an open position exposing the door opening and a closed position covering the door opening. At least one drive motor is mounted on the front face of the elevator car and is disposed between a lower edge and an upper edge of the elevator car. The drive motor is drivingly coupled to the elevator door for moving the elevator door between the open and the closed positions.

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“Elevator Mechanical Design, Principles and Concepts”, by Lubomir Janovsky, Ellis Horwood Limited (1987).
PCT Search Report for Ser. No. PCT/US99/22298 dated Feb. 18, 2000.
PCT Search Report for Ser. No.PCT/US99/30052 dated Apr. 20, 2000.

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