Elevator escape device

Details Elevator escape device Elevator escape device

2008-01-08

2008-01-08

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

C187S290000, C187S298000

Reexamination Certificate

active

11139713

ABSTRACT:
Provided is an elevator escape device. In response to a stop of the elevator due to power outage, a trapped person may press a switch to activate a backup generator, and either a backup electromagnetic contact is enabled if the backup generator functions normally or the person manipulates a handle to activate a slow movement assembly if the backup generator malfunctions. Thereafter, the brake is disabled by contacting a first detent a return assembly operates to return a slow movement assembly to its nonoperating position via a control assembly wherein electromagnetic contacts are short-circuited sequentially by contacting corresponding electromagnetic contacts, the car slowly arrives at a nearest correct floor, and the trapped person may to open a door to escape.

REFERENCES:
patent: 6564907 (2003-05-01), Sasaki
patent: 7025179 (2006-04-01), Shih
patent: 7032714 (2006-04-01), Wang
patent: 2003/0015377 (2003-01-01), Wang
patent: 2006/0137941 (2006-06-01), Andrejak et al.
patent: 2006/0201752 (2006-09-01), Helstrom

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