Emergency drive device for an A.C. elevator

Details Emergency drive device for an A.C. elevator Emergency drive device for an A.C. elevator

1982-08-23

1984-11-27

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

044846649

ABSTRACT:
Described is an emergency drive device for an A.C. elevator which comprises; and alternating current motor for driving a car, an inverter for converting a direct current into an alternating current of variable frequency and supplying the resulting alternating current to said alternating current motor, and an emergency power source connected across input terminals of the inverter with the same polarity as said input terminals and designed to supply direct current power to the drive device.

REFERENCES:
patent: 4316097 (1982-02-01), Reynolds
patent: 4340823 (1982-07-01), Miyazawa
patent: 4353023 (1982-10-01), Kawada et al.
patent: 4366427 (1982-12-01), Walker et al.
patent: 4376471 (1983-03-01), Uchino et al.

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