Elevator safety device

Details Elevator safety device Elevator safety device

1994-11-30

1997-06-10

Nappi, Robert

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

187282, 187394, B66B 500, B66B 136

Patent

active

056378424

ABSTRACT:
An elevator safety device in which a counterweight cam is attached to the counterweight and top terminal landing final limit switches are disposed below the bottom terminal landing of the hoistway so that it is operated by the counterweight cam. The top terminal landing final limit switches only need to be provided in accordance with the counterweight buffer stroke, regardless of to what extent the car has been flung upward, with the result that fewer final limit switches are required.

REFERENCES:
patent: 3333657 (1967-08-01), Inuzuka et al.
patent: 4067416 (1978-01-01), Lowry
patent: 4127843 (1978-11-01), Anzai et al.
"Safety Code for Elevators and Escalators", ASME Jan. 1990, pp. 79 and 80.

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