Elevator apparatus having independent second brake control

Details Elevator apparatus having independent second brake control Elevator apparatus having independent second brake control

2011-05-10

2011-05-10

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

C187S393000

Reexamination Certificate

active

07938231

ABSTRACT:
In an elevator apparatus, a brake control device has a first brake control portion for operating a brake device upon detection of an abnormality to stop a car as an emergency measure, and a second brake control portion for reducing a braking force of the brake device when a degree of deceleration of the car becomes equal to or higher than a predetermined value at a time of emergency braking operation of the first brake control portion. The second brake control portion detects emergency braking operation of the brake device independently of the first brake control portion.

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