Method and device for remote unlocking of an access door of...

Details Method and device for remote unlocking of an access door of... Method and device for remote unlocking of an access door of...

2005-01-25

2005-01-25

Pham, Toan N. (Department: 2632)

Communications: electrical

Condition responsive indicating system

With particular coupling link

C340S286060, C187S390000, C187S391000

Reexamination Certificate

active

06847292

ABSTRACT:
An apparatus and method for the emergency release of passengers who are trapped in an elevator car due to an operational disturbance includes a remote alarm device in the elevator car for summoning help from outside the building and equipment for the remote actuation from the elevator car of an electrical closing or locking system of a building outer door. Expert service personnel summoned from outside the building thus gain access to the elevator even when the building door is locked in order to release the trapped passengers. The actuation can be by a specific button installed in the car control panel or through input of a code or by a button combination of the control panel elements. According to a preferred embodiment, the remote unlocking is possible only temporarily, so as to prevent misuse of the emergency situation.

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patent: 03128879 (1991-05-01), None
patent: 04173677 (1992-06-01), None
patent: 10218518 (1998-08-01), None

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