Emergency stop apparatus for electric elevators

Details Emergency stop apparatus for electric elevators Emergency stop apparatus for electric elevators

1979-06-27

1981-08-18

Truhe, J. V.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 502

Patent

active

042841755

ABSTRACT:
An emergency stop apparatus for electric elevators which comprises a DC motor for driving a cage and being controllingly driven by variable DC power source connected to an AC power source, a power stoppage memorizing circuit which detects the power stoppage of the AC power source and memorizes the power stoppage, a motor stopping circuit for stopping the motor when the power stoppage memorizing circuit operates, and a memory erasing circuit for erasing the memory for the memorizing circuit after the cage stops. In the apparatus, a start command issued through the operation from a floor or the cage inside releases the motor stopping circuit to permit the cage to restart its travel.

REFERENCES:
patent: 1060836 (1913-05-01), Gale, Sr.
patent: 2637834 (1953-05-01), Mignocchi
patent: 3078392 (1963-02-01), Bollesen
patent: 3283236 (1966-11-01), Legg
patent: 3439249 (1969-04-01), Brendemuehl
patent: 3961688 (1976-06-01), Maynard

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