Emergency apparatus for elevator

Details Emergency apparatus for elevator Emergency apparatus for elevator

1981-01-21

1983-03-15

Witkowski, S. J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

307 64, 307 73, B66B 500, H02J 904

Patent

active

043764711

ABSTRACT:
An emergency apparatus for elevator which converts a DC power into an AC power by an inverter device in an emergency state to feed the AC power to an AC traction motor and an AC motor for door-opening and closing which have different rated voltages so as to drive a cage of the elevator and to open and close a door of the cage comprises selectively feeding a power through said inverter device to either of said traction motor or said motor for door-opening and closing, in an emergency state.

REFERENCES:
patent: 2701033 (1955-02-01), Chiselbrook
patent: 3144917 (1964-08-01), Tressel
patent: 3469657 (1969-09-01), Sgori
patent: 3610371 (1971-10-01), Abbott
patent: 3869639 (1975-03-01), Herzog
patent: 4056757 (1977-11-01), Mauch et al.
patent: 4203041 (1980-05-01), Sachs
patent: 4316097 (1982-02-01), Reynolds

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